Final Exam Flashcards
What is the maximum TTL for this destination?
A) 11
B) 12
C) 13
D) 14
C) 13
Which IPv4 address can be pinged to test the internal TCP/IP operation of a host?
A) 192.168.1.1
B) 0.0.0.0
C) 0.0.1
D) 255.255.255.255
E) 127.0.0.1
E) 127.0.0.1
A host is accessing a Telnet server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)
- regenerating data signals
- acting as a client or a server
- providing a channel over which messages travel
- applying security settings to control the ftow of data
- notifying other devices when errors occur
- serving as the source or destination of the messages
regenerating data signals
applying security settings to control the ftow of data
notifying other devices when errors occur
Which statement is true about DHCP operation?
- When a device that is configured to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the network.
- A client must wait for lease expiration before it sends another DHCPREOUEST message.
- The DHCPDISCOVER message contains the IP address and sub net masK to be assigned, the IP address of the DNS server, and the IP address of the default gateway.
- If the client receives several DHCPOFFER messages from different servers, it sends a unicast DHCPREOUEST message to the server from which it chooses to obtain the IP information.
When a device that is configured to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the network.
Which type of wireless security is easily compromised?
- EAP
- PSK
- WEP
- WPA
WEP
What types of addresses make up the majority of addresses within the /8 block 1Pv4 bit space?
- multicast addresses
- private addresses
- public addresses
- experimental addresses
public addresses
Which protocol supports rapid delivery of streaming media?
- Video over Internet Protocol
- Real-Time Transport Protocol
- Transmission Control Protocol
- Secure File Transfer Protocol
Real-Time Transport Protocol
A network administrator notices that the throughput on the network appears lower than expected when compared to the end-to-end network bandwidth. Which three factors can
explain this difference? (Choose three.)
- the amount of traffic
- the type of data encapsulation in use
- the type of traffic
- the number and type of network devices that the data is crossing
- the bandwidth of the connection to the ISP
- the reliability of the network backbone
the amount of traffic
the type of traffic
the number and type of network devices that the data is crossing
Which group of IPv6 addresses cannot be allocated as a host source address?
FECO::/10
FEBF::/10
FF00::/8
FDFF::/7
FF00::/8
A host PC is attempting to lease an address through DHCP. What message is sent by the server to the client know it is able to use the provided IP information?
DHCPDISCOVER
DHCPOFFER
DHCPPREQUEST
DHCPACK
DHCPNACK
DHCPOFFER
The network administrator enters these commands into the R1 router:
R1# copy running-config tftp
Address or name of remote host []?
When the router prompts for an address or remote host name, what IP address should the administrator enter at the prompt?
- 168.9.254
- 168.10.1
- 168.10.2
- 168.11.254
- 168.11.252
192.168.11.252
Which three statements characterize the transport layer protocols? (Choose three.)
TCP uses port numbers to provide reliable transportation of IP packets.
TCP and UDP port numbers are used by application layer protocols.
TCP uses windowing and sequencing to provide reliable transfer of data.
TCP is a connection-oriented protocol. UDP is a connectionless protocol.
UDP uses windowing and acknowledgments for reliable transfer of data.
TCP and UDP port numbers are used by application layer protocols.
TCP uses windowing and sequencing to provide reliable transfer of data.
TCP is a connection-oriented protocol. UDP is a connectionless protocol.
What is the purpose of ICMP messages?
to inform routers about network topology changes
to ensure the delivery of an IP packet
to monitor the process of a domain name to IP address resolution
to provide feedback of IP packet transmissions
to provide feedback of IP packet transmissions
A technician uses the ping 127.0.0.1 command. What is the technician testing?
connectivity between a PC and the default gateway
connectivity between two adjacent Cisco devices
physical connectivity of a particular PC and the network
the TCP/IP stack on a network host
connectivity between two PCs on the same network
the TCP/IP stack on a network host
What will a Layer 2 switch do when the destination MAC address of a received frame is not in the MAC table?
It notifies the sending host that the frame cannot be delivered.
It initiates an ARP request.
It forwards the frame out of all ports except for the port at which the frame was received.
It broadcasts the frame out of all ports on the switch.
It forwards the frame out of all ports except for the port at which the frame was received.
What is a characteristic of the LLC sublayer?
It places information in the frame that allows multiple Layer 3 protocols to use the same network interface and media.
It provides delimitation of data according to the physical signaling requirements of the medium.
It defines software processes that provide services to the physical layer.
It provides the logical addressing required that identifies the device.
It places information in the frame that allows multiple Layer 3 protocols to use the same network interface and media.
On which switch interface would an administrator configure an IP address so that the switch can be managed remotely?
VLAN 1
console 0
vty 0
FastEthernet0/1
VLAN 1
A network engineer is measuring the transfer of bits across the company backbone for a mission critical database application. The engineer notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)
the reliability of the gigabit Ethernet infrastructure of the backbone
the amount of traffic that is currently crossing the network
the type of traffic that is crossing the network
the sophistication of the encapsulation method applied to the data
the bandwidth of the WAN connection to the Internet
the latency that is created by the number of network devices that the data is crossing
the amount of traffic that is currently crossing the network
the type of traffic that is crossing the network
the latency that is created by the number of network devices that the data is crossing
When applied to a router, which command would help mitigate brute-force password attacks against the router?
service password-encryption
login block-for 60 attempts 5 within 60
banner motd $Max failed logins = 5$
exec-timeout 30
login block-for 60 attempts 5 within 60
Which two statements correctly describe a router memory type and its contents? (Choose two.)
ROM is nonvolatile and contains basic diagnostic software.
FLASH is nonvolatile and contains a limited portion of the IOS.
ROM is nonvolatile and stores the running IOS.
RAM is volatile and stores the IP routing table.
NVRAM is nonvolatile and stores other system files.
ROM is nonvolatile and contains basic diagnostic software.
RAM is volatile and stores the IP routing table.
Which two components are necessary for a wireless client to be installed on a WLAN? (Choose two.)
custom adapter
wireless bridge
media
wireless NIC
crossover cable
wireless client software
wireless NIC
wireless client software
A host is accessing a Web server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)
applying security settings to control the flow of data
notifying other devices when errors occur
regenerating data signals
acting as a client or a server
serving as the source or destination of the messages
providing a channel over which messages travel
applying security settings to control the flow of data
notifying other devices when errors occur
regenerating data signals
Match the things to the things
Which is the correct order for PDU Encapsulation?
Frame Header > Network Header > Transport Header > Data > Frame Trailer
Which address on a PC does not change, even if the PC is moved to a different network?
IP address
logical address
MAC address
default gateway address
MAC address
What will happen if the default gateway address is incorrectly configured on a host?
A ping from the host to 127.0.0.1 would not be successful.
The host will have to use ARP to determine the correct address of the default gateway.
The host cannot communicate with other hosts in the local network.
The host cannot communicate with hosts in other networks.
The switch will not forward packets initiated by the host
The host cannot communicate with hosts in other networks.
A host PC has just booted and is attempting to lease an address through DHCP. Which two messages will the client typically broadcast on the network? (Choose two.)
DHCPREQUEST
DHCPOFFER
DHCPDISCOVER
DHCPNACK
DHCPACK
DHCPDISCOVER
DHCPREQUEST
Refer to the exhibit. An administrator wants to change the name of a brand new switch, using the hostname command as shown. What prompt will display after the command is issued?
Switch#
My(config)#
My Switch(config)#
Switch(config)#
MySwitch(config)#
Switch(config)#
(The hostname was invalid so the old one is kept)
After making configuration changes, a network administrator issues a copy running-config startup-config command in a Cisco switch. What is the result of issuing this command?
The configuration changes will be removed and the original configuration will be restored.
The new configuration will be stored in flash memory.
The current IOS file will be replaced with the newly configured file.
The new configuration will be loaded if the switch is restarted.
The new configuration will be loaded if the switch is restarted.
Refer to the exhibit.A TCP segment from a server has been captured by Wireshark, which is running on a host. What acknowledgement number will the host return for the TCP segment that has been received?
2921
250
2
306
21
306
Which technology provides a solution to IPv4 address depletion by allowing multiple devices to share one public IP address?
ARP
DNS
SMB
DHCP
HTTP
NAT
NAT
What is the purpose of the routing process?
to encapsulate data that is used to communicate across a network
to select the paths that are used to direct traffic to destination networks
to convert a URL name into an IP address
to provide secure Internet file transfer
to forward traffic on the basis of MAC addresses
to select the paths that are used to direct traffic to destination networks
Three bank employees are using the corporate network. The first employee uses a web browser to view a company web page in order to read some announcements. The second employee accesses the corporate database to perform some financial transactions. The third employee participates in an important live audio conference with other corporate managers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types?
audio conference, financial transactions, web page
financial transactions, audio conference, web page
audio conference, web page, financial transactions
financial transactions, web page, audio conference
audio conference, financial transactions, web page
A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used?
cell modem
dial-up
cable modem
satellite
DSL
DSL
Which connection provides a secure CLI session with encryption to a Cisco switch?
a Telnet connection
an SSH connection
a console connection
an AUX connection
an SSH connection
What is the purpose of the network security accounting function?
to provide challenge and response questions
to require users to prove who they are
to determine which resources a user can access
to keep track of the actions of a user
to keep track of the actions of a user
Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator uses Telnet to connect to the switch, which password is needed to access user EXEC mode?
lineconin
linevtyin
letmein
secretin
linevtyin
Which publicly available resources describe protocols, processes, and technologies for the Internet but do not give implementation details?
IEEE standards
Request for Comments
IRTF research papers
protocol models
Request for Comments
A PC is configured to obtain an IP address automatically from network 192.168.1.0/24. The network administrator issues the arp –a command and notices an entry of 192.168.1.255 ff-ff-ff-ff-ff-ff. Which statement describes this entry?
This entry refers to the PC itself.
This entry maps to the default gateway.
This is a static map entry.
This is a dynamic map entry.
This is a static map entry.
Which subnet would include the address 192.168.1.96 as a usable host address?
- 168.1.64/26
- 168.1.32/28
- 168.1.32/27
- 168.1.64/29
192.168.1.64/26
A particular website does not appear to be responding on a Windows 7 computer. What command could the technician use to show any cached DNS entries for this web page?
ipconfig /all
ipconfig /displaydns
arp -a
nslookup
ipconfig /displaydns
Which type of wireless security generates dynamic encryption keys each time a client associates with an AP?
WPA
PSK
WEP
EAP
WPA
A frame is transmitted from one networking device to another. Why does the receiving device check the FCS field in the frame?
to compare the interface media type between the sending and receiving ends
to determine the physical address of the sending device
to verify that the frame destination matches the MAC address of the receiving device
to check the frame for possible transmission errors
to verify the network layer protocol information
to check the frame for possible transmission errors
Refer to the exhibit. Which IP addressing scheme should be changed?
Site 1
Site 3
Site 4
Site 2
Site 2
What is the effect of configuring the ipv6 unicast-routing command on a router?
to assign the router to the all-nodes multicast group
to permit only unicast packets on the router
to enable the router as an IPv6 router
to prevent the router from joining the all-routers multicast group
to enable the router as an IPv6 router
Which three IP addresses are private ? (Choose three.)
- 1.1.1
- 16.4.4
- 6.6.6
- 168.5.5
- 32.5.2
- 167.10.10
- 1.1.1
- 168.5.5
- 16.4.4
Refer to the exhibit. Consider the IP address configuration shown from PC1. What is a description of the default gateway address?
It is the IP address of the Router1 interface that connects the company to the Internet.
It is the IP address of the ISP network device located in the cloud.
It is the IP address of Switch1 that connects PC1 to other devices on the same LAN.
It is the IP address of the Router1 interface that connects the PC1 LAN to Router1.
It is the IP address of the Router1 interface that connects the PC1 LAN to Router1.
During normal operation, from which location do most Cisco switches and routers run the IOS?
flash
RAM
NVRAM
disk drive
RAM
What is an important function of the physical layer of the OSI model?
It encodes frames into electrical, optical, or radio wave signals.
It accepts frames from the physical media.
It encapsulates upper layer data into frames.
It defines the media access method performed by the hardware interface.
It encodes frames into electrical, optical, or radio wave signals.
Which procedure is used to reduce the effect of crosstalk in copper cables?
wrapping the bundle of wires with metallic shielding
avoiding sharp bends during installation
requiring proper grounding connections
designing a cable infrastructure to avoid crosstalk interference
twisting opposing circuit wire pairs together
twisting opposing circuit wire pairs together
What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.)
placement and removal of frames from the media
detection of errors through CRC calculations
conversion of bits into data signals
delimiting groups of bits into frames
data link layer addressing
error correction through a collision detection method
session control using port numbers
delimiting groups of bits into frames
data link layer addressing
detection of errors through CRC calculations
What method is used to manage contention-based access on a wireless network?
token passing
CSMA/CD
CSMA/CA
priority ordering
CSMA/CA
What happens when part of an Internet radio transmission is not delivered to the destination?
A delivery failure message is sent to the source host.
The part of the radio transmission that was lost is re-sent.
The transmission continues without the missing portion.
The entire transmission is re-sent.
The transmission continues without the missing portion.
What is the auto-MDIX feature on a switch?
the automatic configuration of full-duplex operation over a single Ethernet copper or optical cable
the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection
the ability to turn a switch interface on or off accordingly if an active connection is detected
the automatic configuration of an interface for 10/100/1000 Mb/s operation
the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection
Which function is provided by TCP?
detection of missing packets
communication session control
path determination for data packets
data encapsulation
detection of missing packets
How does a Layer 3 switch differ from a Layer 2 switch?
A Layer 3 switch learns the MAC addresses that are associated with each of its ports. However, a Layer 2 switch does not.
A Layer 3 switch maintains an IP address table instead of a MAC address table.
A Layer 3 switch supports VLANs, but a Layer 2 switch does not.
An IP address can be assigned to a physical port of a Layer 3 switch. However, this is not supported in Layer 2 switches.
An IP address can be assigned to a physical port of a Layer 3 switch. However, this is not supported in Layer 2 switches.
Which two notations are useable nibble boundaries when subnetting in IPv6? (Choose two.)
/68
/62
/66
/64
/70
/64
/68
What is the purpose of having a converged network?
to reduce the cost of deploying and maintaining the communication infrastructure
to provide high speed connectivity to all end devices
to make sure that all types of data packets will be treated equally
to achieve fault tolerance and high availability of data network infrastructure devices
to reduce the cost of deploying and maintaining the communication infrastructure
Refer to the exhibit. A ping to PC3 is issued from PC0, PC1, and PC2 in this exact order. Which MAC addresses will be contained in the S1 MAC address table that is associated with the Fa0/1 port?
just the PC0 MAC address
PC0, PC1, and PC2 MAC addresses
just the PC2 MAC address
just PC0 and PC1 MAC addresses
just the PC1 MAC address
just PC0 and PC1 MAC addresses
Which field in an IPv4 packet header will typically stay the same during its transmission?
Packet Length
Destination Address
Flag
Time-to-Live
Destination Address
What two preconfigured settings that affect security are found on most new wireless routers? (Choose two.)
MAC filtering enabled
default administrator password
WEP encryption enabled
PSK authentication required
broadcast SSID
broadcast SSID
default administrator password
Which parameter does the router use to choose the path to the destination when there are multiple routes available?
the higher metric value that is associated with the destination network
the lower metric value that is associated with the destination network
the higher gateway IP address to get to the destination network
the lower gateway IP address to get to the destination network
the lower metric value that is associated with the destination network
Refer to the exhibit. What is the significance of the asterisk (*) in the exhibited output?
An asterisk designates that the file system has at least one file that uses that file system.
The asterisk designates which file system is the default file system.
An asterisk indicates that the file system is bootable.
The asterisk shows which file system was used to boot the system.
The asterisk designates which file system is the default file system.
Fill in the blank.
During data communications, a host may need to send a single message to a specific group of destination hosts simultaneously. This message is in the form of a ”_____” message.
multicast
An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes?
to interrupt the ping process
to restart the ping process
to allow the user to complete the command
to exit to a different configuration mode
to interrupt the ping process
Refer to the exhibit. Which area would most likely be an extranet for the company network that is shown?
area A
area D
area C
area B
area C
In which default order will a router search for startup configuration information?
setup mode, NVRAM, TFTP
NVRAM, TFTP, setup mode
NVRAM, RAM, TFTP
TFTP, ROM, NVRAM
flash, ROM, setup mode
NVRAM, TFTP, setup mode
Which IPv6 address is assigned to the Serial0/0/0 interface on RT2?
2001: db8:abc:1::1
2001: db8:abc:5::1
2001: db8:abc:5::2
2001: db8:abc:10::15
2001:db8:abc:5::1
What is contained in the trailer of a data-link frame?
physical address
data
error detection
logical address
error detection
match
What is the protocol that is used to discover a physical address from a known logical address and what message type does it use?
-ARP, broadcast*
A _________ topology influences the type of network framing and media access control that will be used
Physical
Logical
Data
Presentation
Logical
Which two statements describe the characteristics of fiber-optic cabling? (Choose two.)
Fiber-optic cabling uses LEDs for single-mode cables and laser technology for multimode cables.
Fiber-optic cabling does not conduct electricity.
Fiber-optic cabling has high signal loss.
Fiber-optic cabling is primarily used as backbone cabling.
Multimode fiber-optic cabling carries signals from multiple sending devices.
Fiber-optic cabling does not conduct electricity.*
Fiber-optic cabling is primarily used as backbone cabling.*
Which two protocols function at the internet layer? (Choose two.)
ARP
ICMP
BOOTP
PPP
IP
IP*
ICMP*
Which firewall technique blocks incoming packets unless they are responses to internal requests?
URL filtering
port filtering
application filtering
stateful packet inspection
stateful packet inspection*
Consider the following range of addresses:
2001:0DB8:BC15:00A0:0000::
2001:0DB8:BC15:00A1:0000::
2001:0DB8:BC15:00A2:0000::
…
2001:0DB8:BC15:00AF:0000::
The prefix-length for the range of addresses is ___.
/60
What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)
FTP
ARP
NAT
DHCP
PPP
DNS
DNS*
DHCP*
FTP*
Which communication tool allows real-time collaboration?
weblog
wiki
e-mail
instant messaging
instant messaging*
Which of the following are primary functions of a router? (Choose two.)
packet switching
microsegmentation
flow control
path selection
domain name resolution
path selection*
packet switching*
__________ is a best-effort, connectionless application layer protocol that is used to transfer files.
TFTP
Can’t connect to internet. Why?
DNS Misconfigured
Wrong Default Gateway
It will give 4 options about ping,
the correct one is: The PC2 will be able to ping 192.168.1.1*
From where is the system image being loaded.
TFTP
Flash
USB
CD
Flash
Why does the command not work?
The user has to be in privileged EXEC mode to use that command.
The user is in privileged EXEC mode.
The user is connected via SSH.
The user has to be in privileged EXEC mode to use that command.
What are three characteristics of multicast transmission? (Choose three.)
A single packet can be sent to a group of hosts.
Multicast messages map lower layer addresses to upper layer addresses.
Multicast transmission can be used by routers to exchange routing information.
Computers use multicast transmission to request IPv4 addresses.
The source address of a multicast transmission is in the range of 224.0.0.0 to 224.0.0.255.
A single packet can be sent to a group of hosts.*
Multicast messages map lower layer addresses to upper layer addresses.*
Multicast transmission can be used by routers to exchange routing information.*
At a minimum, which address is required on IPv6-enabled interfaces?
global unicast
link-local
site local
unique local
link-local*
Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame?
fragment-free switching
fast-forward switching
store-and-forward switching
cut-through switching
store-and-forward switching
