Part 1 Flashcards
A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?
Enter CTRL-Z at the privileged mode prompt.
Power cycle the device.
Exit privileged EXEC mode and press Enter.
Exit global configuration mode.
Exit privileged EXEC mode and press Enter.
What happens when the transport input ssh command is entered on the switch vty lines?
The switch requires a username/password combination for remote access.
The SSH client on the switch is enabled.
Communication between the switch and remote users is encrypted.
Communication between the switch and remote users is encrypted.
What is the subnet ID associated with the IPv6 address 2001:DA48:FC5:A4:3D1B::1/64?
2001: DA48::/64
2001: :/64
2001: DA48:FC5:A4::/64
2001: DA48:FC5::A4:/64
2001:DA48:FC5:A4::/64
A client is using SLAAC to obtain an IPv6 address for its interface. After an address has been generated and applied to the interface, what must the client do before it can begin to use this IPv6 address?
- It must send an ICMPv6 Router Solicitation message to determine what default gateway it should use.
- It must send a DHCPv6 INFORMATION-REQUEST message to request the address of the DNS server.
- It must send a DHCPv6 REQUEST message to the DHCPv6 server to request permission to use this address.
- It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.
It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.
Which range of link-local addresses can be assigned to an IPv6-enabled interface?
FE80::/10
FDEE::/7
FF00::/8
FE80::/10
What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network?
- It checks the value of the TTL field and if it is 100, it discards the packet and sends a Destination Unreachable message to the source host.
- It increments the value of the TTL field by 1 and if the result is 100, it discards the packet and sends a Parameter Problem message to the source host.
- It checks the value of the TTL field and if it is 0, it discards the packet and sends a Destination Unreachable message to the source host.
- It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.
It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.
A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network? (Choose three.)
- mobility options
- security
- interference
- coverage area
- packet collision
security
interference
coverage area
A network administrator notices that some newly installed Ethernet cabling is carrying corrupt and distorted data signals. The new cabling was installed in the ceiling close to fluorescent lights and electrical equipment. Which two factors may interfere with the copper cabling and result in signal distortion and data corruption? (Choose two.)
EMI
signal attenuation
crosstalk
RFI
EMI
RFI
Data is being sent from a source PC to a destination server. Which three statements correctly describe the function of TCP or UDP in this situation? (Choose three.)
- TCP is the preferred protocol when a function requires lower network overhead.
- The source port field identifies the running application or service that will handle data returning to the PC.
- The TCP source port number identifies the sending host on the network.
- UDP segments are encapsulated within IP packets for transport across the network.
- The UDP destination port number identifies the application or service on the server which will handle the data.
The source port field identifies the running application or service that will handle data returning to the PC.
UDP segments are encapsulated within IP packets for transport across the network.
The UDP destination port number identifies the application or service on the server which will handle the data.
Match the application protocols to the correct transport protocols. UDP or TCP DHCP = FTP = HTTP = SMTP = TFTP =
DHCP = UDP FTP = TCP HTTP = TCP SMTP = TCP TFTP =UDP
A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)
netsh interface ipv6 show neighbor arp -a tracert ping ipconfig nslookup
ping
ipconfig
nslookup
What two pieces of information are displayed in the output of the show ip interface brief command? (Choose two.)
speed and duplex settings MAC addresses next-hop addresses interface descriptions IP addresses Layer 1 statuses
IP addresses
Layer 1 statuses
A network administrator is adding a new LAN to a branch office. The new LAN must support 25 connected devices. What is the smallest network mask that the network administrator can use for the new network?
- 255.255.224
- 255.255.192
- 255.255.240
- 255.255.128
255.255.255.224
Which frame field is created by a source node and used by a destination node to ensure that a transmitted data signal has not been altered by interference, distortion, or signal loss?
transport layer error check field error correction process field flow control field User Datagram Protocol field frame check sequence field
frame check sequence field
What is a function of the data link layer?
provides delivery of data between two applications
provides for the exchange of frames over a common local media
provides end-to-end delivery of data between hosts
provides the formatting of data
provides for the exchange of frames over a common local media
What are three characteristics of the CSMA/CD process? (Choose three.)
After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired.
A jam signal indicates that the collision has cleared and the media is not busy.
All of the devices on a segment see data that passes on the network medium.
The device with the electronic token is the only one that can transmit after a collision.
Devices can be configured with a higher transmission priority.
A device listens and waits until the media is not busy before transmitting.
After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired.
All of the devices on a segment see data that passes on the network medium.
A device listens and waits until the media is not busy before transmitting
What characteristic describes a Trojan horse
an attack that slows or crashes a device or network service
malicious software or code running on an end device
a network device that filters access and traffic coming into a network
the use of stolen credentials to access private data
malicious software or code running on an end device
What three requirements are defined by the protocols used in network communcations to allow message transmission across a network? (Choose three.)
end-device installation media selection message encoding delivery options connector specifications message size
message encoding
delivery options
message size
What are two features of ARP? (Choose two.)
If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.
When a host is encapsulating a packet into a frame, it refers to the MAC address table to determine the mapping of IP addresses to MAC addresses.
If no device responds to the ARP request, then the originating node will broadcast the data packet to all devices on the network segment.
An ARP request is sent to all devices on the Ethernet LAN and contains the IP address of the destination host and its multicast MAC address.
If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast.
If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.
If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast.
Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?
Switch1> config t
% Invalid input detected at “^” marker
The administrator must first enter privileged EXEC mode before issuing the command.
