ICND1 Troubleshooting 5

Question 1

A technician finds that two Cisco switches are connected with a crossover cable but the link is down. What feature would resolve this automatically on modern Cisco switches?

Accepted Answer

Auto-MDIX

Answer

Auto-MDIX automatically detects and corrects the cable type needed, eliminating the need for crossover cables on modern Cisco switches.

Question 2

You run 'traceroute 8.8.8.8' from a router and the output shows asterisks (*) at every hop. What does this indicate?

Accepted Answer

ICMP or UDP packets are being blocked by a firewall or the device doesn't send ICMP TTL exceeded messages

Answer

Asterisks in traceroute output mean no response was received within the timeout, usually because ICMP is filtered or the device doesn't respond.

Question 3

A host cannot ping its own default gateway. After checking the cable, what should be checked next on the host?

Accepted Answer

The host's IP address, subnet mask, and default gateway settings

Answer

Incorrect IP addressing on the host, such as a wrong subnet mask, can prevent communication even with directly connected devices.

Question 4

Which Cisco IOS command would you use to verify that DHCP is assigning addresses from the correct pool?

Accepted Answer

show ip dhcp binding

Answer

'show ip dhcp binding' displays all current DHCP leases showing which IP addresses have been assigned to which MAC addresses.

Question 5

A router running EIGRP shows a neighbor in ACTIVE state for longer than 3 minutes. What does this condition indicate?

Accepted Answer

The router is stuck in active (SIA) and will drop the neighbor

Answer

Stuck-In-Active (SIA) occurs when a router doesn't receive a reply to a query within the active timer, causing it to drop that neighbor relationship.

(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test

(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test

ICND1 Troubleshooting 5