offer CCNA Exam Braindumps (5 Q&As)
1. What are two recommended ways of protecting network device configuration files from outside network security threats? (Choose two.)
A: Allow unrestricted access to the console or VTY ports.
B: Use a firewall to restrict access from the outside to the network devices.
C: Always use Telnet to access the device command line because its data is automatically encrypted.
D: Use SSH or another encrypted and authenticated transport to access device configurations.
E: Prevent the loss of passwords by disabling password encryption.
Correct Answers: B, D
2. What are two characteristics of Telnet? (Choose two.)
A: It sends data in clear text format.
B: It is no longer supported on Cisco network devices.
C: It is more secure than SSH.
D: It requires an enterprise license in order to be implemented.
E: It requires that the destination device be configured to support Telnet connections.
Correct Answers: A, E
3. Which of the following are key characteristics of PPP? (Choose three.)
A: can be used over analog circuits
B: maps Layer 2 to Layer 3 address
C: encapsulates several routed protocols
D: supports IP only
E: provides error correction
Correct Answers: A, C, E
4. What will an Ethernet switch do if it receives a unicast frame with a destination MAC that is listed in the switch table?
A: The switch will not forward unicast frames.
B: The switch will forward the frame to a specific port.
C: The switch will return a copy of the frame out the source port.
D: The switch will remove the destination MAC from the switch table.
E: The switch will forward the frame to all ports except the port on which it was received.
Correct Answers: B
5. A Cisco router that was providing Frame Relay connectivity at a remote site was replaced with a different vendor’s frame relay router. Connectivity is now down between the central and remote site. What is the most likely cause of the problem?
A: mismatched LMI types
B: incorrect DLCI
C: mismatched encapsulation types
D: incorrect IP address mapping
Correct Answers: C
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