Network Fundamentals Flashcards

Question

How does TCP differ from UDP? (Choose two). A. TCP provides best effort delivery. B. TCP provides synchronized communication. C. TCP segments are essentially datagrams. D. TCP provides sequence numbering of packets. E. TCP uses broadcast delivery.

Answer 1

How does TCP differ from UDP? (Choose two). A. TCP provides best effort delivery. **B. TCP provides synchronized communication.** C. TCP segments are essentially datagrams. **D. TCP provides sequence numbering of packets.** E. TCP uses broadcast delivery.

Answer 2

What are two common TCP applications? (Choose two). A. TFTP **B. SMTP** C. SNMP D. FTP E. DNS ## Footnote SMTP uses TCP port 25, while FTP uses TCP ports 20 and 21.

Answer 3

Which layer in the OSI reference model is responsible for determining the availability of the receiving program and checking to see if enough resources exist for that communication? A. Transport B. Network C. Presentation D. Session **E. Application** ## Footnote The Application layer is responsible for identifying and establishing the availability of the intended communication partner and determining whether sufficient resources for the intended communication exist.

Answer 4

A network administrator is verifying the configuration of a newly installed host by establishing an FTP connection to a remote server. What is the highest layer of the protocol stack that the network administrator is using for this operation? **A. Application** B. Presentation C. Session D. Transport E. Internet F. Data link ## Footnote FTP belongs to Application layer and it is also the highest layer of the OSI model.

Answer 5

What layer is responsible for combining bits into bytes, and bytes into frames? A. Application B. Presentation C. Transport **D. Data Link**

Answer 6

Which of the following correctly describe steps in the OSI data encapsulation process? (Choose two). **A. The transport layer divides a data stream into segments and may add reliability and flow control information.** B. The data link layer adds physical source and destination addresses and an FCS to the segment. C. Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information. **D. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.** E. The presentation layer translates bits into voltages for transmission across the physical link.

Answer 7

Which two Ethernet fiber-optic modes support distances of greater than 550 meters? (Choose two). **A. 1000Base-LX** B. 1000Base-FX C. 1000Base-SC D. 100Base-CX **E. 1000Base-ZX** ## Footnote 1000BASE-LX is used with Single-mode or Multi-mode fiber with a range of 3-10Km. 1000Base-ZX is single mode fiber with a range of 43-75Km.

Answer 8

A network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port? A. This is a 10Mbs switch port. B. This is a 100Mbs switch port. **C. This is an Ethernet port operating at half duplex.** D. This is an Ethernet port operating at full duplex. E. This is a port on a network interface card in a PC. ## Footnote Modern Ethernet networks built with switches and full-duplex connections no longer utilize CSMA/ CD. CSMA/ CD is only used in obsolete shared media Ethernet (which uses repeater or hub and runs at half-duplex).

Answer 9

CSMA/ CD is a protocol that helps devices do what? A. Increase bandwidth between all devices. B. Allows devices to transmit simultaneously. **C. Share bandwidth evenly without having two devices transmit at the same time**. D. Administers the bandwidth for the device that is currently transmitting.

Answer 10

Half-Duplex uses ____ with a digital signal running in both directions? **A. One wire pair** B. Two wire pairs C. Three wire pairs D. Four wire pairs

Answer 11

Identify the incorrect statement regarding Full-duplex. **A. Uses CSMA/ CD to avoid collisions.** B. No collisions occur in full-duplex. C. A dedicated switchport is required for each full-duplex mode. D. The host NIC and Switchport must be full-duplex capable. ## Footnote In a half-duplex network, one wire pair is used in the ethernet cable. During transmission, a device will listen to the wire to begin transmission of data. To avoid data collisions, CSMA/ CD was created to mitigate any collisions during data transmission.

Answer 12

What is the first 24 bits in a MAC address called? A. NIC B. BIA **C. OUI** D. VAI ## Footnote Organizational Unique Identifier (OUI) is the first 24 bits of a MAC address for a network device, which indicates the specific vendor for that device as assigned by the Institute of Electrical and Electronics Engineers, Incorporated (IEEE).

Answer 13

A MAC address is _____ bits long, and expressed in _____? A. 48, decimal B. 24, decimal **C. 48, hexadecimal** D. 32, hexadecimal

Answer 14

What is the decimal equivalent of 10010110? A. 140 B. 170 C. 120 **D. 150** ## Footnote Each binary digit is equivalent to a decimal value in an IP address. The IP address consists of 4 octets, 8 binary bits each. To convert binary to decimal, multiply the binary value to the corresponding value of 2 - 1x2( 7) + 0x2( 6) + 0x2( 5) + 1x2( 4) + 0x2( 3) + 1x2( 2) + 1x2( 1) + 0x2( 0). Add the sums together - 1x128 + 0x64 + 0x32 + 1x16 + 0x8 + 1x4 + 1x2 + 0x1 = 128 + 0 + 0 + 16 + 0 + 4 + 2 + 0 which equals 150.

Answer 15

What is the hexadecimal value of C? A. 0101 **B. 1100** C. 1101 D. 1110 ## Footnote The hexadecimal value of C is 12. In binary, it is represented as 1100. Values in a nibble are 8-4-2-1. We have 1 in the 8 position, 1 in the 4 position, 0 in the 2, 0 in the position.

Answer 16

What cable would you use between a Router and a Switch or Hub? **A. Straight-Through** B. Crossover C. Rolled D. Coax

Answer 17

What is the equivalent of 11001010.11110101.10000011.11101011 in hexadecimal? A. 0xE61A3D67 B. 0xD8B2D356 **C. 0xCAF583EB** D. 0xE81E3D36 ## Footnote 0x denotes that this is a hexadecimal value. To convert this to hexadecimal, break up each octet into 2 nibble of 4 bits each. The correct answer is C - 0xCAF583EB.

Answer 18

The Cisco Hierarchical Model contains what three layers? **A. Core Layer, Distribution Layer, Access Layer** B. Backbone Layer, Production Layer, Access layer C. Border Gateway Layer, ISP Layer, Distribution Layer D. Regional Layer, Local Layer, User Layer

Answer 19

Which fields are contained within an IEEE Ethernet Frame? (Choose two). **A. Source and destination MAC address.** B. Source and destination network address. C. Source and destination port number. **D. FCS Field.** ## Footnote An Ethernet frame has source and destination MAC addresses, an Ether-Type field to identify the Network layer protocol, the data, and the FCS field that holds the answer to the CRC.

Answer 20

1000Base-T is which IEEE standard? A. 802.3F B. 802.3z **C. 802.3ab** D. 802.3ae

Answer 21

Data encapsulation follows what process? A. Application, Segment, Network, Frame, Bits **B. Segments, Packets, Frames, Bits** C. Coax, Twisted pair, Fiber, Wireless D. Packets, Frames, Segments, Bits E. Bits, Packets, Segments, Application data

Answer 22

What term is used for the unwanted signal interference from adjacent pairs in a cable? A. EMI B. RFI **C. Crosstalk** D. Attenuation

Answer 23

Refer to the exhibit. A host is connected to switch port fa0/ 3. The host and switch have been fully configured for IP connectivity as shown. However, the indicator LED on switch port fa0/ 3 is not on, and the host cannot communicate with any other hosts including those connected to VLAN 2 on the same switch. Based on the given information, what is the problem? A. Switch port fa0/ 3 is not configured as a trunk port. **B. There is an incorrect cable type.** C. The switch has been assigned an incorrect subnet mask. D. Switch port fa0/ 3 has been blocked by STP. E. The switch and the host must be in the same subnet.

Answer 24

A network device needs to be installed in the place of the icon labeled Network Device to accommodate a leased line attachment to the Internet. Which network device and interface configuration meets the minimum requirements for this installation? A. A router with two Ethernet interfaces. B. A switch with two Ethernet interfaces. **C. A router with one Ethernet and one serial interface.** D. A switch with one Ethernet and one serial interface. E. A router with one Ethernet and one modem interface.

Answer 25

An administrator cannot connect from R1 to R2. To troubleshoot this problem, the administrator has entered the command shown in the exhibit. Based on the output shown, what could be the problem? A. The serial interface is configured for half duplex. B. The serial interface does not have a cable attached. **C. The serial interface has the wrong type of cable attached.** D. The serial interface is configured for the wrong frame size. E. The serial interface has a full buffer.

Answer 26

Which two statements describe the operation of the CSMA/ CD access method? (Choose two). A. In a CSMA/ CD collision domain, multiple stations can successfully transmit data simultaneously. **B. In a CSMA/ CD collision domain, stations must wait until the media is not in use before transmitting.** C. The use of hubs to enlarge the size of collision domains is one way to improve the operation of the CSMA/ CD access method. D. After a collision, the station that detected the collision has first priority to resend the lost data. **E. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.** F. After a collision, all stations involved run an identical backoff algorithm and then synchronize with each other prior to transmitting data.

Answer 27

If a router has four interfaces and each interface is connected to four switches, how many broadcast domains are present on the router? A. 1 B. 2 **C. 4** D. 8

Answer 28

What kind of cable should be used to make each connection that is identified by the numbers shown? A. 1 - Ethernet Crossover cable 2 - Ethernet straight-through cable 3 - Fiber Optic cable 4 - Rollover cable. **B. 1 - Ethernet straight-through cable 2 - Ethernet straight-through cable 3 - Serial cable 4 - Rollover cable.** C. 1 - Ethernet rollover cable 2 - Ethernet crossover cable 3 - Serial cable 4 - Null-modem cable. D. 1 - Ethernet straight-through cable 2 - Ethernet Crossover cable 3 - Serial cable 4 - Rollover cable. E. 1 - Ethernet straight-through cable 2 - Ethernet Crossover cable 3 - Serial cable 4 - Ethernet Straight-through cable.

Answer 29

For what two purposes does the Ethernet protocol use physical addresses? (Choose two). **A. To uniquely identify devices at Layer 2**. B. To allow communication with devices on a different network. C. To differentiate a Layer 2 frame from a Layer 3 packet. D. To establish a priority system to determine which device gets to transmit first. **E. To allow communication between different devices on the same network.** F. To allow detection of a remote device when its physical address is unknown.

Answer 30

In an Ethernet network, under what two scenarios can devices transmit? (Choose two). A. When they receive a special token. B. When there is a carrier. **C. When they detect no other devices are sending**. **D. When the medium is idle.** E. When the server grants access.

Answer 31

The network administrator has asked you to check the status of the workstation's IP stack by pinging the loopback address. What address would you ping to perform this task? A. 10.1.1.1 B. 192.168.0.1 **C. 127.0.0.1** D. 239.1.1.1

Answer 32

Which IP address can be assigned to an internet interface? **A. 9.255.255.10** B. 10.180.48.224 C. 192.168.20.223 D. 172.16.200.18 ## Footnote The IP address which can be assigned to an Internet interface must a public IP address. Private IP address (10.0.0.0 - 10.255.255.255; 172.16.0.0 - 172.31.255.255; 192.168.0.0 - 192.168.255.255). Special IP addresses (the local loopback address 127.0.0.1, multicast addresses…) cannot be assigned to an Internet interface. In this question, only answer B doesn’t belong to the range of private IP addresses.

Answer 33

What TCP message does a host send to establish a connection with a destination host? A. ISN B. Establish C. HELLO **D. SYN** E. Request open f. ACK

Answer 34

The network administrator is using a Windows PC application that is called putty.exe for remote communication to a switch for network troubleshooting. Which two protocols could be used during this communication? (Choose two). A. SNMP B. HTTP **C. Telnet** D. RMON **E. SSH**

Answer 35

The corporate head office has a teleconferencing system that uses VOIP (voice over IP) technology. This system uses UDP as the transport for the data transmissions. If these UDP datagrams arrive at their destination out of sequence, what will happen? A. UDP will drop the datagrams. **B. UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive**. C. UDP will send an ICMP Information Request to the source host. D. UDP will use the sequence numbers in the datagram headers to reassemble the data in the correct order.

Answer 36

Which two benefits are provided by using a hierarchical addressing network addressing scheme? (Choose two). **A. Ease of management and troubleshooting.** B. Efficient utilization of MAC addresses. C. Dedicated communications between devices. **D. Reduces routing table entries.** E. Auto-negotiation of media rates.

Answer 37

Which of the following describes private IP addresses? (Choose two). A. Addresses that can be routed through the public internet. **B. A scheme to conserve public addresses**. C. Addresses licensed to enterprises or ISPs by an internet registry organization. D. Addresses chosen by a company to communicate with the internet. **E. Addresses that cannot be routed through the public internet.**

Answer 38

An administrator attempts a traceroute but receives a “Destination Unreachable” message. Which protocol is responsible for that message? A. TCP B. SNMP C. RUDP D. RARP **E. ICMP**

Answer 39

When two hosts are trying to communicate across a network, how does the host originating the communication determine the hardware address of the host that it wants to “talk” to? A. Show Network Address request **B. ARP request** C. RARP request D. Proxy ARP request E. Show Hardware Address request F. Ping request

Answer 40

Which of the following host addresses are members of networks that cannot be routed across the public internet? (Choose three). **A. 10.172.13.65** B. 198.234.12.95 **C. 172.16.223.125** D. 172.64.12.29 E. 212.193.48.254 **F. 192.168.23.252**

Answer 41

Which option can be configured for the default gateway of the Local Area Connection? A. 192.223.129.0 B. 10.0.0.0 C. 192.223.129.254 **D. 10.0.0.254**

Answer 42

Which command would you use on a Cisco router to verify the Layer 3 path to a host? **A. tracert address** B. traceroute address C. telnet address D. ssh address

Answer 43

Workstation A has been assigned an IP address of 192.0.2.24/ 28. Workstation B has been assigned an IP address of 192.0.2.100/ 28. The two workstations are connected with a straight-through cable. Attempts to ping between the hosts were unsuccessful. What two things can be done to allow communications between the hosts? (Choose two). A. Change the subnet mask of the hosts to /26. B. Change the address of Workstation A to 192.0.2.15. **C. Change the subnet mask of the hosts to /25.** D. Change the address of Workstation B to 192.0.2.111. **E. Replace the straight-through cable with a crossover cable.** ## Footnote A /28 is CIDR notation for the 255.255.255.240 subnet mask. This has a block size of 16 in the fourth octet. Workstation A is in the 192.0.2.16 subnet, Workstation B is in the 192.0.2.96 subnet. Both workstations are in the wrong subnet. Changing the subnet mask to /25 (255.255.255.128), provides two subnets: 0 and 128, which would put both hosts in the zero (0) subnet. With both workstations in the same subnet, you will need a crossover cable in order to be able to communicate between the two hosts.

Answer 44

The network default gateway being applied to a host by DHCP is 192.168.5.33/ 28. Which of the following option is a valid IP address for that subnet? A. 192.168.5.14 B. 192.168.5.47 **C. 192.168.5.40** D. 192.168.5.55 E. 192.168.5.32

Answer 45

A network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test? (Choose two). A. CDP B. DHCP **C. ICMP** **D. ARP** E. DNS

Answer 46

An administrator issues the command ping 127.0.0.1 from the command line prompt on a PC. If a reply is received, what does this confirm? **A. The PC has the TCP/ IP protocol stack correctly installed.** B. The PC has connectivity with a Layer 3 device. C. The PC has connectivity up to Layer 5 of the OSI model. D. The PC has connectivity with a local host. E. The PC has a default gateway correctly configured.

Answer 47

What will happen if a private IP address is assigned to a public interface connected to an ISP? A. Several automated methods will be necessary on the private network. B. The NAT process will be used to translate this address in a valid IP address. C. Only is ISP router will have the capability to access the public network. **D. Addresses in a private range will be not routed on the internet backbone.** E. A conflict of IP addresses happens, because other public routers can use the same range.

Answer 48

Where does routing occur within the DoD TCP/ IP reference model? A. Transport B. Network **C. Internet** D. Application ## Footnote The Internet Layer of TCP/ IP is equivalent to the Network Layer which is responsible for routing decision.

Answer 49

On the network 131.1.123.0/ 27, what is the last IP address that can be assigned to a host? A. 131.1.123.32 B. 131.1.123.31 **C. 131.1.123.30** D. 131.1.123.33

Answer 50

A Layer 2 broadcast is also known as a hardware broadcast. Of the following, which two are binary and hexadecimal Layer 2 broadcasts? (Choose two). **A. 11111111** **B. FF.FF.FF.FF.FF.FF** C. 00000000 D. 45. AC. 24. E3.60. A5 E. 255.255.255.255

Answer 51

When is it necessary to use a public IP address on a routing interface? A. Connect a router on a local network. B. Allow distribution of routes between networks. **C. Connect a network to the internet**. D. Translate a private IP address. E. Connect a router to another router.

Answer 52

Which of the following are types of flow control? (Choose three). **A. Buffering** B. Cut-through **C. Windowing** **D. Congestion avoidance** E. Load balancing

Answer 53

exhibit. A TCP/ IP Transfer is diagrammed in the exhibit. A window size of three has been negotiated for this transfer. Which message will be returned from the receiver to the sender as part of this TCP/ IP transfer? A. send ACK 4-6 **B. send ACK 4** C. send ACK 3 D. send ACK 1-3 E. send ACK 7 F. send ACK 6 ## Footnote The receiving host will send back to the transmitting host what is expecting "next", not what it already received.

Answer 54

In addition to assigning an IP address, which of the following correctly describe regarding TCP/ IP stack configuration features that DHCP can provide? (Choose three). **A. DNS servers** **B. Subnet mask** C. Helper address D. FTP server E. TFTP server **F. Default gateway**

Answer 55

A workstation has just resolved a browser URL to the IP address of a server. What protocol will the workstation now use to determine the destination MAC address to be placed into frames directed toward the server? A. HTTP B. DNS C. DHCP D. RARP **E. ARP**

Answer 56

Which statements are true regarding ICMP packets? (Choose two). A. They acknowledge receipt of TCP segments. B. They guarantee datagram delivery. C. **TRACERT uses ICMP packets.** D. **They are encapsulated within IP datagrams.** E. They are encapsulated within UDP datagrams.

Answer 57

Which command can be used from a PC to verify the connectivity between hosts that connect through a switch in the same LAN? **A. ping address** B. tracert address C. traceroute address D. arp address

Answer 58

Which IP addresses are valid public Class A host addresses? Assume the default Class A subnet mask is in use. (Choose two). A. 10.154.16.87 **B. 11.22.33.44** **C. 68.95.255.100** D. 127.0.0.1 E. 128.16.89.72 F. 131.241.78.3

Answer 59

A small company has a Class C network address and needs to create five subnets, each accommodating 25 hosts. Which subnet mask needs to be configured? A. 255.255.240.0 B. 255.255.255.128 C. 255.255.255.192 **D. 255.255.255.224** E. 255.255.255.240 F. 255.255.255.248 ## Footnote To create additional subnets, we need to borrow bits from the host bits. In order to accommodate 5 subnets, we use the formula 2n. n is the number of bits to borrow from the host bits. Using 3 bits in the fourth octet will give us 6 subnets with 30 available addresses in each subnet.

Answer 60

What is the maximum number of bits that can be borrowed to create subnets if a Class B network address is being used? A. 2 B. 6 C. 8 **D. 14** E. 16 ## Footnote The default subnet mask for a Class B address is 255.255.0.0. This gives us 16 bits for network bits, 16 bits for host bits. All 0' s in a subnet is a network address (255.255.0.0), all 1' s in an address denotes a broadcast address (255.255.255.255).

Answer 61

An administrator is working with the 192.168.4.0 network, which has been subnetted with a /26 mask. Which two addresses can be assigned to hosts within the same subnet? (Choose two). A. 192.168.4.61 B. 192.168.4.63 **C. 192.168.4.67** **D. 192.168.4.125** E. 192.168.4.128 F. 192.168.4.132

Answer 62

Given a subnet mask of 255.255.255.224, which of the following addresses can be assigned to network hosts? (Choose three). A. 201.45.116.159 B. 15.234.118.63 C. 217.63.12.192 **D. 92.11.178.93** **E. 134.178.18.56** **F. 192.168.16.87**

Answer 63

What is the network address for the host with IP address 192.168.23.61/ 28? A. 192.168.23.0 B. 192.168.23.32 **C. 192.168.23.48** D. 192.168.23.56 E. 192.168.23.60 ## Footnote A /28 is CIDR notation for 255.255.255.240. This gives us a block size of 16 in the fourth octet (256-240 = 16). The host is 192.168.23.61. Counting subnets in blocks of 16, 192.168.23.61 is in the 192.168.23.48 subnet. Valid hosts are 192.168.23.49 - 192.168.23.62.

Answer 64

A new LAN segment is allocated the network number 172.16.0.0/ 25. What range of addresses are available for hosts on that network? A. 172.16.0.1 through 172.16.0.254 **B. 172.16.0.1 through 172.16.0.126** C. 172.16.0.129 through 172.16.0.254 D. 172.16.0.1 through 172.16.1.254 E. 172.16.1.1 through 172.16.1.126 F. 172.16.1.1 through 172.16.1.254

Answer 65

Which three network addresses are reserved for private network use? (Choose three). **A. 10.0.0.0** B. 172.15.0.0 **C. 172.31.0.0** D. 192.162.24.0 **E. 192.168.255.0** F. 224.192.0.0 ## Footnote RFC 1918 defines the private IP address range. The ranges of private IP Addresses are: 10.0.0.0-10.255.255.255 , 172.16.0.0-172.31.255.255, and 192.168.0.0-192.168.255.255.

Answer 66

Which command will assign the last usable IP address from the 192.168.32.128/ 28 subnetwork to a router interface? **A. Router( config-if)# ip address 192.168.32.142 255.255.255.240** B. Router( config-if)# ip address 192.168.32.143 255.255.255.240 C. Router( config-if)# ip address 192.168.32.158 255.255.255.240 D. Router( config-if)# ip address 192.168.32.142 255.255.255.248 E. Router( config-if)# ip address 192.168.32.144 255.255.255.224 F. Router( config-if)# ip address 192.168.32.158 255.255.255.224

Answer 67

What is the subnet address for the IP address 172.19.20.23/ 28? A. 172.19.20.0 B. 172.19.20.15 **C. 172.19.20.16** D. 172.19.20.20 E. 172.19.20.32 ## Footnote A /28 is CIDR notation for 255.255.255.240. This gives us a block size of 16 in the fourth octet (256-240 = 16). Counting the networks in blocks of 16 (172.19.20.0, 172.19.20.16, 172.19.20.32), 172.19.20.23 falls into the 172.19.20.16 subnet.

Answer 68

Which of the following correctly pairs the dotted decimal subnet mask with the correct number of binary bits that represent the subnet mask? A. 255.255.255.192 and /25 B. 255.255.255.248 and /28 C. 255.255.255.224 and /26 D. 255.255.255.248 and /27 **E. 255.255.255.240 and /28** F. 255.255.255.240 and /16

Answer 69

A TFTP server has recently been installed in the Atlanta office. The network administrator is located in the NY office and has made a console connection to the NY router. After establishing the connection, they are unable to backup the configuration file and IOS of the NY router to the TFTP server. What is the cause of this problem? A. The NY router has an incorrect subnet mask. B. The TFTP server has an incorrect IP address. **C. The TFTP server has an incorrect subnet mask**. D. The network administrator computer has an incorrect IP address.

Answer 70

A network engineer needs to configure a branch office for 82 hosts. What is the most efficient use of a subnet mask? **A. 255.255.255.128** B. 255.255.255.192 C. 255.255.255.224 D. 255.255.255.248

Answer 71

What starting binary pattern indicates an address range evenly split between network and host size? A. 01xxxxxx B. 0xxxxxxx **C. 10xxxxxx** D. 110xxxxx ## Footnote IP addresses can be identified in a decimal or binary format. Class A address range is from 0-127 in decimal, 0xxxxxxx in binary. Class B address range is 128--191 in decimal, 10xxxxxx in binary. Class C address range is 192-223 in decimal, 110xxxxx in binary. C is the correct answer as this relates to a Class B address range with a default mask of 255.255.0.0.

Answer 72

Which one of the following IP addresses is the last valid host in the subnet using mask 255.255.255.224? A. 192.168.2.63 **B. 192.168.2.62** C. 192.168.2.61 D. 192.168.2.60 E. 192.168.2.32

Answer 73

Your ISP has given you the address 223.5.14.7/ 29 to assign to your router's interface. They have also given you the default gateway address of 223.5.14.4. After you have configured the address, the router is unable to ping any remote devices. What is preventing the router from pinging remote devices? A. The IP address is an invalid class D multicast address. B. The default gateway is the broadcast address for this subnet. **C. The IP address is the broadcast address for this subnet.** D. The default gateway is not an address on the subnet.

Answer 74

A network administrator has been assigned an IP address space of 192.168.1.0/ 24 for a network with three segments. The first segment needs to support 60 hosts. The second segment needs to support 45 hosts. The third segment needs to support 30 hosts. Which two statements describe this choice? (Choose two). A. The assigned address will not provide enough IP address space for the required number of hosts. **B. The assigned address represents private IP address space.** **C. User IP addresses must be translated to public IP addresses when accessing the Internet.** D. User IP addresses must be translated to private IP addresses when communicating to hosts on other network segments. E. This assignment will compromise network security.

Answer 75

How many hosts are available for 192.168.1.1/ 28? **A. 14** B. 15 C. 16 D. 17 E. 18

Answer 76

You need to configure 52 hosts for a computer lab. Which subnet mask is appropriate? A. 255.255.255.224 B. 255.255.255.248 C. 255.255.254.240 **D. 255.255.255.192**

Answer 77

Which subnet mask provides the most efficient use of a Class C address space for a company that requires 10 subnets and 12 hosts per subnet? A. 255.255.255.192 B. 255.255.255.248 C. 255.255.255.0 D. 255.255.255.224 E. 255.255.255.252 **F. 255.255.255.240**

Answer 78

What is the last usable address of the network 10.10.64.0 255.255.252.0? A. 10.10.64.254 **B. 10.10.67.254** C. 10.10.66.254 D. 10.10.65.254

Answer 79

What is the most efficient subnet mask for a small branch office with seven hosts? A. 255.255.255.0 B. 255.255.255.248 **C. 255.255.255.240** D. 255.255.255.224

Answer 80

What is the best practice when assigning IP addresses in a small office of six hosts? A. Use a DHCP server that is located at the headquarters. B. Use a DHCP server that is located at the branch office. C. Assign the addresses by using the local CDP protocol. **D. Assign the addresses statically on each node.**

Answer 81

Which IP address is a private address? A. 12.0.0.1 B. 168.172.19.39 **C. 172.20.14.36** D. 172.33.194.30 E. 192.169.42.34

Answer 82

Which class of IP address will provide sufficient addresses for 66,000 or more hosts? **A. Class A** B. Class B C. Class C D. Class D E. Class E

Answer 83

From which IP address class can 15 bits be borrowed to create subnets? **A. A** B. B C. C D. D E. E

Answer 84

Which two statements describe the IP address 10.16.3.65/ 23? (Choose two). A. The subnet address is 10.16.3.0 255.255.254.0. **B. The lowest host address in the subnet is 10.16.2.1 255.255.254.0.** C. The last valid host address in the subnet is 10.16.2.254 255.255.254.0. **D. The broadcast address of the subnet is 10.16.3.255 255.255.254.0.** E. The network is not subnetted.

Answer 85

Given an IP address of 192.168.1.42 255.255.255.248, what is the subnet address? A. 192.168.1.8/ 29 B. 192.168.1.32/ 27 **C. 192.168.1.40/ 29** D. 192.168.1.16/ 28 E. 192.168.1.48/ 29

Answer 86

Which IP addresses are valid for hosts belonging to the 10.1.160.0/ 20 subnet? (Choose three). **A. 10.1.168.0** B. 10.1.176.1 **C. 10.1.174.255** **D. 10.1.160.255** E. 10.1.160.0 F. 10.1.175.255

Answer 87

If a host on a network has the address 172.16.45.14/ 30, what is the address of the subnetwork to which this host belongs? A. 172.16.45.0 B. 172.16.45.4 C. 172.16.45.8 **D. 172.16.45.12** E. 172.16.45.16

Answer 88

Given a Class C IP address subnetted with a /30 subnet mask, how many valid host IP addresses are available on each of the subnets? A. 1 **B. 2** C. 4 D. 8 E. 252 F. 254

Answer 89

What is the subnet address of 172.16.159.159/ 22? A. 172.16.0.0 B. 172.16.128.0 **C. 172.16.156.0** D. 172.16.159.0 E. 172.16.159.128 F. 172.16.192.0

Answer 90

Which default gateway address should be assigned to HostA? A. 192.168.1.1 **B. 192.168.1.65** C. 192.168.1.66 D. 192.168.1.129 E. 10.1.1.1 F. 10.1.1.2

Answer 91

The enterprise has decided to use the network address 172.16.0.0. The network administrator needs to design a classful addressing scheme to accommodate the three subnets, with 30, 40, and 50 hosts, as shown. What subnet mask would accommodate this network? **A. 255.255.255.192** B. 255.255.255.224 C. 255.255.255.240 D. 255.255.255.248 E. 255.255.255.252

Answer 92

Which of the following describe Class A host addresses? (Choose three). **A. The decimal value of the first octet can range from 1 to 126**. B. The decimal value of the first octet can range from 1 to 192. **C. The first octet represents the entire network portion of the address.** D. The default subnet mask for a Class A network is 255.255.0.0. **E. The value of the first binary place in the first octet must be 0.** F. The first two binary bits of the address must be 00.

Answer 93

After configuring two interfaces on the HQ router, the network administrator notices an error message. What must be done to fix this error? A. The serial interface must be configured first. B. The serial interface must use the address 192.168.1.2. C. The subnet mask of the serial interface should be changed to 255.255.255.0. **D. The subnet mask of the FastEthernet interface should be changed to 255.255.255.240.** E. The address of the FastEthernet interface should be changed to 192.168.1.66.

Answer 94

From where does a small network get its IP network address? A. Internet Assigned Numbers Authority (IANA) B. Internet Architecture Board (IAB) **C. Internet Service Provider (ISP)** D. Internet Domain Name Registry (IDNR)

Answer 95

A network administrator has subnetted the 172.16.0.0 network using a subnet mask of 255.255.255.192. A duplicate IP address of 172.16.2.120 has accidentally been configured on a workstation in the network. The technician must assign this workstation a new IP address within that same subnetwork. Which address should be assigned to the workstation? A. 172.16.1.80 **B. 172.16.2.80** C. 172.16.1.64 D. 172.16.2.64 E. 172.16.2.127 F. 172.16.2.128

Answer 96

If an Ethernet port on a router was assigned an IP address of 172.16.112.1/ 20, what is the maximum number of hosts allowed on this subnet? A. 1024 B. 2046 **C. 4094** D. 4096 E. 8190

Answer 97

A host computer has the IP address 192.168.43.139 and netmask 255.255.255.240. On which logical IP network does this host reside? A. 192.168.0.0/ 26 B. 192.168.0.0/ 28 C. 192.168.43.0/ 28 D. 192.168.43.64/ 28 E. 192.168.43.112/ 28 **F. 192.168.43.128/ 28**

Answer 98

A network administrator has configured a Catalyst 2950 switch for remote management by pasting into the console the configuration commands that are shown in the exhibit. However, a Telnet session cannot be successfully established from a remote host. What should be done to fix this problem? A. Change the first line to interface fastethernet 0/ 1. B. Change the first line to interface vlan 0/ 1. **C. Change the fifth line to ip default-gateway 192.168.17.241.** D. Change the fifth line to ip route 0.0.0.0 0.0.0.0 192.168.17.1. E. Change the sixth line to line con 0.

Answer 99

The network manager has requested a 300-workstation expansion of the network. The workstations are to be installed in a single broadcast domain, but each workstation must have its own collision domain. The expansion is to be as cost-effective as possible while still meeting the requirements. Which three items will adequately fulfill the request? (Choose three). **A. One IP subnet with a mask of 255.255.254.0** B. Two IP subnets with a mask of 255.255.255.0 C. Seven 48-port hubs **D. Seven 48-port switches** **E. One router interface** F. Seven router interfaces

Answer 100

You have been asked to come up with a subnet mask that will allow all three web servers to be on the same network while providing the maximum number of subnets. Which network address and subnet mask meet this requirement? A. 192.168.252.0 255.255.255.252 **B. 192.168.252.8 255.255.255.248** C. 192.168.252.8 255.255.255.252 D. 192.168.252.16 255.255.255.240 E. 192.168.252.16 255.255.255.252

Answer 101

Given an IP address 172.16.28.252 with a subnet mask of 255.255.240.0, what is the correct network address? **A. 172.16.16.0 ** B. 172.16.0.0 C. 172.16.24.0 D. 172.16.28.0

Answer 102

You are working in a data center environment and are assigned the address range 10.188.31.0/ 23. You are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30 hosts each. Which IP address range meets these requirements? A. 10.188.31.0/ 26 B. 10.188.31.0/ 25 C. 10.188.31.0/ 28 **D. 10.188.31.0/ 27** E. 10.188.31.0/ 29

Answer 103

An administrator must assign static IP addresses to the servers in a network. For network 192.168.20.24/ 29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP properties box for the sales server? A. IP address: 192.168.20.14 Subnet Mask: 255.255.255.248 Default Gateway: 192.168.20.9 B. IP address: 192.168.20.254 Subnet Mask: 255.255.255.0 Default Gateway: 192.168.20.1 **C. IP address: 192.168.20.30 Subnet Mask: 255.255.255.248 Default Gateway: 192.168.20.25** D. IP address: 192.168.20.30 Subnet Mask: 255.255.255.240 Default Gateway: 192.168.20.17 E. IP address: 192.168.20.30 Subnet Mask: 255.255.255.240 Default Gateway: 192.168.20.25

Answer 104

Which of the following IP addresses are valid Class B host addresses if a default Class B mask is in use? (Choose two). A. 10.6.8.35 **B. 133.6.5.4** C. 192.168.5.9 D. 127.0.0.1 **E. 190.6.5.4**

Answer 105

What are two reasons that duplex mismatches can be difficult to diagnose? (Choose two). **A. The interface displays a connected (up/ up) state even when the duplex settings are mismatched.** **B. The symptoms of a duplex mismatch may be intermittent.** C. Autonegotiation is disabled. D. Full-duplex interfaces use CSMA/ CD logic, so mismatches may be disguised by collisions. E. 1-Gbps interfaces are full-duplex by default.

Answer 106

What is the subnet broadcast address of the LAN connected to Router1? **A. 192.168.8.15** B. 192.168.8.31 C. 192.168.8.63 D. 192.168.8.127

Answer 107

Including the address on the Router1 Ethernet interface, how many hosts can have IP addresses on the LAN to which Router1 is connected? **A. 6** B. 30 C. 62 D. 126

Answer 108

An Ethernet cable is attached to a PC NIC and then attached to a switch port. The PC power is turned on and the switch port link LED turns green. The link light indicates what two conditions? (Choose two). **A. Layer 2 communication has been established between the PC and switch.** B. The PC has received a DHCP address. C. Traffic is being sent from the switch to the PC. D. If flashing, the green LED indicates port speed of 100 Mb/ s. **E. The Layer 1 media is functioning between the PC and switch.** F. The switch port is functioning as a half-duplex connection.

Answer 109

Which address type does a switch use to make selective forwarding decisions? A. source IP address B. destination IP address C. source and destination IP address D. source MAC address **E. destination MAC address**

Answer 110

The ports that are shown are the only active ports on the switch. The MAC address table is shown in its entirety. The Ethernet frame that is shown arrives at the switch. What two operations will the switch perform when it receives this frame? (Choose two). A. The MAC address of 0000.00dd.dddd will be added to the MAC address table. **B. The MAC address of 0000.00aa.aaaa will be added to the MAC Address Table.** C. The frame will be forwarded out port fa0/ 3 only. **D. The frame will be forwarded out fa0/ 1, fa0/ 2, and fa0/ 3.** E. The frame will be forwarded out all the active ports.

Answer 111

Which two characteristics apply to Layer 2 switches? (Choose two). **A. increases the number of collision domains** B. decreases the number of collision domains **C. implements VLAN** D. decreases the number of broadcast domains E. uses the IP address to make decisions for forwarding data packets

Answer 112

Refer to the topology and switching table shown in the graphic. Host B sends a frame to Host C. What will the switch do with the frame? A. Drop the frame. **B. Send the frame out all ports except port 0/ 2**. C. Return the frame to Host B. D. Send an ARP request for Host C. E. Send an ICMP Host Unreachable message to Host B. F. Record the destination MAC address in the switching table and send the frame directly to Host C.

Answer 113

SwitchA receives the frame with the addressing shown in the exhibit. According to the command output also shown in the exhibit, how will SwitchA handle this frame? A. It will drop the frame. **B. It will forward the frame out port Fa0/ 6 only**. C. It will forward the frame out port Fa0/ 3 only. D. It will flood the frame out all ports. E. It will flood the frame out all ports except Fa0/ 3.

Answer 114

What is the purpose of assigning an IP address to a switch? A. provides local hosts with a default gateway address **B. allows remote management of the switch** C. allows the switch to respond to ARP requests between two hosts D. ensures that hosts on the same LAN can communicate with each other

Answer 115

The system LED is amber on a Cisco Catalyst 2950 series switch. What does this indicate? **A. The system is malfunctioning**. B. The system is not powered up. C. The system is powered up and operational. D. The system is forwarding traffic. E. The system is sensing excessive collisions.

Answer 116

What are two effects on network performance of configuring a switch to store an entire frame before forwarding it to the destination? (Choose two). A. Increase in switch operating speed. **B. Increased latency**. **C. Filtering of all frame errors**. D. Filtering of collision fragments only. E. Propagation of corrupted or damaged frames. F. Decreased latency.

Answer 117

Which command will set the default gateway to 192.168.12.1 on a Cisco switch? A. Switch( config)# ip default-network 192.168.12.1 B. Switch( config)# ip route-default 192.168.12.1 **C. Switch( config)# ip default-gateway 192.168.12.1** D. Switch( config)# ip route 192.168.12.1 0.0.0.0

Answer 118

Switch-1 needs to send data to a host with a MAC address of 00b0. d056. efa4. What will Switch-1 do with this data? A. Switch-1 will drop the data because it does not have an entry for that MAC address. **B. Switch-1 will flood the data out all of its ports except the port from which the data originated.** C. Switch-1 will send an ARP request out all its ports except the port from which the data originated. D. Switch-1 will forward the data to its default gateway.

Answer 119

After the power-on self-test (POST), the system LED of a Cisco 2950 switch turns amber. What is the status of the switch? A. The POST was successful. B. The switch has a problem with the internal power supply and needs an external power supply to be attached. **C. POST failed and there is a problem that prevents the operating system of the switch from being loaded.** D. The switch has experienced an internal problem but data can still be forwarded at a slower rate. E. The switch passed POST, but all the switch ports are busy.

Answer 120

What are two advantages of Layer 2 Ethernet switches over hubs? (Choose two). A. decreasing the number of collision domains **B. filtering frames based on MAC addresses** **C. allowing simultaneous frame transmissions** D. increasing the size of broadcast domains E. increasing the maximum length of UTP cabling between devices

Answer 121

A switch receives a frame on one of its ports. There is no entry in the MAC address table for the destination MAC address. What will the switch do with the frame? A. drop the frame **B. forward it out of all ports except the one that received it ** C. forward it out of all ports D. store it until it learns the correct port

Answer 122

The MAC address table is shown in its entirety. The Ethernet frame that is shown arrives at the switch. What two operations will the switch perform when it receives this frame? (Choose two). A. The switch will not forward a frame with this destination MAC address. **B. The MAC address of 0000.00aa.aaaa will be added to the MAC Address Table.** C. The MAC address of ffff.ffff.ffff will be added to the MAC address table. **D. The frame will be forwarded out all active switch ports except for port fa0/ 0.** E. The frame will be forwarded out fa0/ 0 and fa0/ 1 only. F. The frame will be forwarded out all the ports on the switch.

Answer 123

What does a host on an Ethernet network do when it is creating a frame and it does not have the destination address? A. drops the frame B. sends out a Layer 3 broadcast message C. sends a message to the router requesting the address **D. sends out an ARP request with the destination IP address**

Answer 124

As packets travel from Mary to Robert, which three devices will use the destination MAC address of the packet to determine a forwarding path? (Choose three). A. Hub1 **B. Switch1** C. Router1 **D. Switch2** E. Router2 **F. Switch3**

Answer 125

The exhibit is showing the topology and the MAC address table. Host A sends a data frame to host D. What will the switch do when it receives the frame from host A? **A. The switch will add the source address and port to the MAC address table and forward the frame to host D.** B. The switch will discard the frame and send an error message back to host A. C. The switch will flood the frame out of all ports except for port Fa0/ 3. D. The switch will add the destination address of the frame to the MAC address table and forward the frame to host D.

Answer 126

A technician has installed SwitchB and needs to configure it for remote access from the management workstation connected to SwitchA. Which set of commands is required to accomplish this task? A. SwitchB( config)# interface FastEthernet 0/ 1 SwitchB( config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB( config-if)# no shutdown B. SwitchB( config)# interface vlan 1 SwitchB( config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB( config-if)# ip default-gateway 192.168.8.254 255.255.255.0 SwitchB( config-if)# no shutdown **C. SwitchB( config)# ip default-gateway 192.168.8.254 SwitchB( config)# interface vlan 1 SwitchB( config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB( config-if)# no shutdown** D. SwitchB( config)# ip default-network 192.168.8.254 SwitchB( config)# interface vlan 1 SwitchB( config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB( config-if)# no shutdown E. SwitchB( config)# ip route 192.168.8.254 255.255.255.0 SwitchB( config)# interface FastEthernet 0/ 1 SwitchB( config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB( config-if)# no shutdown

Answer 127

HostX is transferring a file to the FTP server. Point A represents the frame as it goes toward the Toronto router. What will the Layer 2 destination address be at this point? A. abcd. 1123.0045 B. 192.168.7.17 C. aabb. 5555.2222 D. 192.168.1.1 **E. abcd. 2246.0035**

Answer 128

The network administrator cannot connect to Switch1 over a Telnet session, although the hosts attached to Switch1 can ping the interface Fa0/ 0 of the router. Given the information in the graphic and assuming that the router and Switch2 are configured properly, which of the following commands should be issued on Switch1 to correct this problem? A. Switch1( config)# line con 0 Switch1( config-line)# password cisco Switch1( config-line)# login B. Switch1( config)# interface fa0/ 1 Switch1( config-if)# ip address 192.168.24.3 255.255.255.0 **C. Switch1( config)# ip default-gateway 192.168.24.1** D. Switch1( config)# interface fa0/ 1 Switch1( config-if)# duplex full Switch1( config-if)# speed 100 E. Switch1( config)# interface fa0/ 1 Switch1( config-if)# switchport mode trunk

Answer 129

If host A sends an IP packet to host B, what will the source physical address be in the frame when it reaches host B? A. 10.168.10.99 B. 10.168.11.88 C. A1: A1: A1: A1: A1: A1 D. B2: B2: B2: B2: B2: B2 **E. C3: C3: C3: C3: C3: C3** F. D4: D4: D4: D4: D4: D4

Answer 130

Which name describes an IPv6 host-enabled tunneling technique that uses IPv4 UDP, does not require dedicated gateway tunnels, and, can pass through existing IPv4 NAT gateways? A. Dual stack **B. Teredo** C. Manual 6to4 D. Dynamic

Answer 131

Which of these represents an IPv6 link-local address? A. FE08: B. 2001:: C. 2002:: **D. FE80::** E. FF02::

Answer 132

Which option is a valid IPv6 address? **A. 2004: 1: 25A4: 886F:: 1** B. 2002: 7654: A1AD: 61: 81AF:CCC1 C. 2001: 0000: 130F:: 099a:: 12a D. FEC0: ABCD:WXYZ: 0067:: 2A4

Answer 133

Which statement about IPv6 is true? A. Addresses are not hierarchical and are assigned at random. B. Only one IPv6 address can exist on a given interface. C. There are 2.7 billion addresses available. **D. Broadcasts have been eliminated and replaced with multicasts.**

Answer 134

Which IPv6 address is the all-router multicast group? 224.0.0.2. **A. FF02:: 2** B. FF02:: 1 C. FF02:: 4 D. FF02:: 3 ## Footnote The IP address of all routers of IPV6 is FF02:: 2, the IP address of all routers of IPV4 is 224.0.0.2.

Answer 135

Which three are characteristics of an IPv6 anycast address? (Choose three). **A. The same address for multiple devices in the group**. **B. Delivery of packets to the group interface that is closest to the sending device.** C. any-to-many communication model. D. one-to-many communication model. E. A unique IPv6 address for each device in the group. **F. one-to-nearest communication model.**

Answer 136

Which address is the IPv6 all-RIP-routers multicast group address that is used by RIPng as the destination address for RIP updates? A. FF02:: 6 B. FF05:: 101 **C. FF02:: 9** D. FF02:: A

Answer 137

Which IPv6 address is the equivalent of the IPv4 interface loopback address 127.0.0.1? **A. :: 1** B. 0::/ 10 C. 2000::/ 3 D. ::

Answer 138

What are three IPv6 transition mechanisms? (Choose three). A. VPN tunneling **B. Teredo tunneling** **C. ISATAP tunneling** D. GRE tunneling **E. 6to4 tunneling**

Answer 139

Which two statements describe characteristics of IPv6 unicast addressing? (Choose two). A. Link-local addresses start with FF00:/ 10. B. If a global address is assigned to an interface, then that is the only allowable address for the interface. C. Link-local addresses start with FE00:/ 12. **D. There is only one loopback address and it is :: 1.** **E. Global addresses start with 2000:/ 3.**

Answer 140

How is an EUI-64 format interface ID created from a 48-bit MAC address? A. By prefixing the MAC address with 0xFF and appending 0xFF to it. **B. By inserting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address.** C. By prefixing the MAC address with 0xFFEE. D. By prefixing the MAC address with 0xF and inserting 0xF after each of its first three bytes. E. By appending 0xFF to the MAC address.

Answer 141

What is known as “one-to-nearest” addressing in IPv6? A. Multicast **B. Anycast** C. Unspecified address D. Global unicast

Answer 142

Which two of these statements are true of IPv6 address representation? (Choose two). **A. Every IPv6 interface contains at least one loopback address.** B. There are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast. C. The first 64 bits represent the dynamically created interface ID. D. Leading zero's in an IPv6 16 bit hexadecimal field are mandatory. **E. A single interface may be assigned multiple IPv6 addresses of any type**.

Answer 143

The network administrator has been asked to give a reason for moving from an IPv4 network to an IPv6 network. What are two reasons for adopting IPv6 over IPv4? (Choose two). A. Change of destination address in the IPv6 header. B. NAT. C. Change of source address in the IPv6 header. **D. No broadcast**. E. Telnet does not require a password. **F. autoconfiguration.**

Answer 144

In which integration method is an IPv6 packet encapsulated within an IPv4 protocol? A. dual-stack **B. tunneling** C. dot1q D. proxy

Answer 145

Which two statements about IPv6 router advertisement messages are true? (Choose two). **A. They use ICMPv6 type 134.** **B. The advertised prefix length must be 64 bits.** C. The advertised prefix length must be 48 bits. D. They are sourced from the configured IPv6 interface address. E. Their destination is always the link-local address of the neighboring node.

Answer 146

Which statement about IPv6 is true? A. An IPv6 address is 64 bits long and is represented as hexadecimal characters. B. An IPv6 address is 128 bits long and is represented as decimal digits. C. An IPv6 address is 32 bits long and is represented as decimal digits. **D. An IPv6 address is 128 bits long and is represented as hexadecimal characters**.

Answer 147

Which command can you use to manually assign a static IPv6 address to a router interface? A. ipv6 autoconfig 2001: db8: 2222: 7272:: 72/ 64 B. ipv6 autoconfig C. ipv6 address PREFIX_1:: 1/ 64 **D. ipv6 address 2001: db8: 2222: 7272:: 72/ 64**

Answer 148

What are three features of the IPv6 protocol? (Choose three). A. Optional IPsec **B. Autoconfiguration** **C. No broadcasts** D. Complicated header **E. Plug-and-play** F. Checksums

Answer 149

Which two are features of IPv6? (Choose two). **A. anycast**. B. broadcast. **C. multicast**. D. podcast. E. allcast.

Answer 150

What is the alternative notation for the IPv6 address B514: 82C3: 0000: 0000: 0029: EC7A: 0000: EC72? A. B514: 82C3: 0029: EC7A:EC72 B. B514: 82C3:: 0029: EC7A:EC72 C. B514: 82C3: 0029:: EC7A: 0000: EC72 **D. B514: 82C3:: 0029: EC7A: 0: EC72**

Answer 151

How many bits are contained in each field of an IPv6 address? A. 24 B. 4 C. 8 **D. 16**

Answer 152

Which IPv6 address is valid? A. 2001: 0db8: 0000: 130F: 0000: 0000: 08GC: 140B B. 2001: 0db8: 0: 130H:: 87C: 140B C. 2031:: 130F:: 9C0: 876A: 130B **D. 2031: 0: 130F:: 9C0: 876A: 130B**

Answer 153

Which statements are TRUE regarding Internet Protocol version 6 (IPv6) addresses? (Choose three). **A. An IPv6 address is divided into eight 16-bit groups.** **B. A double colon (::) can only be used once in a single IPv6 address.** C. IPv6 addresses are 196 bits in length. D. Leading zeros cannot be omitted in an IPv6 address. **E. Groups with a value of 0 can be represented with a single 0 in IPv6 address.**

Answer 154

Identify the four valid IPv6 addresses. (Choose four). **A. ::** **B. :: 192: 168: 0: 1** C. 2000:: D. 2001: 3452: 4952: 2837:: **E. 2002: c0a8: 101:: 42** **F. 2003: dead:beef: 4dad: 23: 46: bb: 101**

Answer 155

Which of the following describes the process of encapsulating IPv6 packets inside IPv4 packets? A. Routing **B. Tunneling** C. Hashing D. NAT E. PAT

Answer 156

Which of these represents an IPv6 link-local address? **A. FE80:: 380e: 611a:e14f: 3d69** B. FE81:: 280f: 512b:e14f: 3d69 C. FEFE: 0345: 5f1b:: e14d: 3d69 D. FE08:: 280e: 611: a:f14f: 3d69

Answer 157

The network administrator has been asked to give reasons for moving from IPv4 to IPv6. What are two valid reasons for adopting IPv6 over IPv4? (Choose two). **A. No broadcast.** B. Change of source address in the IPv6 header. C. Change of destination address in the IPv6 header. D. Telnet access does not require a password. **E. autoconfig** F. NAT

Answer 158

Which IPv6 header field is equivalent to the TTL? **A. Hop Limit** B. Flow Label C. TTD D. Hop Count E. Scan Timer

Answer 159

Which two statements about the tunnel mode ipv6ip command are true? (Choose two). **A. It enables the transmission of IPv6 packets within the configured tunnel.** **B. It specifies IPv4 as the encapsulation protocol.** C. It specifies IPv6 as the encapsulation protocol. D. It specifies IPv6 as the transport protocol. E. It specifies that the tunnel is a Teredo tunnel.

Answer 160

In which three ways is an IPv6 header simpler than an IPv4 header? (Choose three). **A. Unlike IPv4 headers, IPv6 headers have a fixed length.** **B. IPv6 uses an extension header instead of the IPv4 Fragmentation field.** **C. IPv6 headers eliminate the IPv4 Checksum field.** D. IPv6 headers use the Fragment Offset field in place of the IPv4 Fragmentation field. E. IPv6 headers use a smaller Option field size than IPv4 headers. F. IPv6 headers use a 4-bit TTL field, and IPv4 headers use an 8-bit TTL field.

Answer 161

Which two features can dynamically assign IPv6 addresses? (Choose two). **A. IPv6 stateless autoconfiguration** B. DHCP C. NHRP **D. IPv6 stateful autoconfiguration** E. ISATAP tunneling

Answer 162

PC1 is trying to login into SERVER1. Which of the following troubleshooting steps is incorrect? A. Test the local IP stack is working by pinging the loopback address. B. Test that the local IP stack is talking to the Data Link layer (LAN driver) by pinging the local IP address. C. Test that the host is working on the LAN by pinging the default gateway. **D. Ping the remote server to verify local LAN connectivity.**

Answer 163

Which of these statements correctly describes the state of the switch once the boot process has been completed? A. As FastEthernet0/ 12 will be the last to come up, it will be blocked by STP. **B. Remote access management of this switch will not be possible without configuration change.** C. More VLANs will need to be created for this switch. D. The switch will need a different IOS code in order to support VLANs and STP.

Answer 164

A network administrator attempts to ping Host2 from Host1 and receives the results that are shown. What is the problem? A. The link between Host1 and Switch1 is down. B. TCP/ IP is not functioning on Host1 **C. The link between Router1 and Router2 is down.** D. The default gateway on Host1 is incorrect. E. Interface Fa0/ 0 on Router1 is shutdown. F. The link between Switch1 and Router1 is down.

Answer 165

The network shown in the diagram is experiencing connectivity problems. Which of the following will correct the problems? (Choose two). A. Configure the gateway on Host A as 10.1.1.1. **B. Configure the gateway on Host B as 10.1.2.254.** C. Configure the IP address of Host A as 10.1.2.2. **D. Configure the IP address of Host B as 10.1.2.2**. E. Configure the masks on both hosts to be 255.255.255.224. F. Configure the masks on both hosts to be 255.255.255.240.

Answer 166

A user is unable to connect to the internet. Based on the layered approach to troubleshooting starting at the lowest layer, what is the correct troubleshooting order? 1. Verify NIC operation 2. Verify ethernet cable connection 3. Verify URL 4. Verify IP configuration A. 3412 **B. 2143** C. 4213 D. 1243

Answer 167

A user cannot reach any web sites on the Internet, but others in the department are not having a problem. What is the most likely cause of the problem? A. IP routing is not enabled. B. The default gateway is not in the same subnet. **C. A DNS server address is not reachable by the PC**. D. A DHCP server address is not reachable by the PC. E. NAT has not been configured on the router that connects to the Internet.