Practice Test Geeks(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test
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Troubleshooting Flashcards

7 cards from real ICND1 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Troubleshooting flashcards as text

  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?

    Answer: Auto-MDIX

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

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

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

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

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

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

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

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

    Answer: show ip dhcp binding

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

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

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

    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.

  6. After configuring a new subinterface for router-on-a-stick, inter-VLAN routing still doesn't work. What is a likely misconfiguration?

    Answer: The encapsulation dot1q VLAN ID on the subinterface doesn't match the switch trunk VLAN

    The 802.1Q encapsulation VLAN ID on the router subinterface must match the corresponding VLAN on the switch trunk for proper tagging.

  7. You issue 'show ip interface brief' and notice an interface shows 'administratively down.' How do you bring it up?

    Answer: Issue 'no shutdown' in interface configuration mode

    An 'administratively down' interface has been manually disabled with the 'shutdown' command and requires 'no shutdown' to re-enable it.