A switch port shows a large number of input errors, including runts and CRC errors, but no collisions. The connected device is a server with a 1 Gbps NIC. The cable is a known-good Cat6 patch cord. What should you check next?

Check the cable for a break by swapping it with another known-good cable.

Check the server's firewall settings.

Check the switch port speed setting.

Check the server NIC for a duplex mismatch.

A network administrator sees a high number of CRC errors on an interface. Which cause is most likely?

The interface is receiving frames that are larger than the maximum frame size

The interface speed is set to 100 Mbps while the peer is set to 1 Gbps

The interface is configured for full-duplex while the peer is half-duplex

Electromagnetic interference on the cable

A network admin is troubleshooting a link between a switch and a server. The switch port is configured with 'speed 1000' and 'duplex full'. The server NIC is configured with 'speed auto' and 'duplex auto'. The link is up, but the switch shows 'input errors' and 'late collisions'. What is the most likely cause?

The server is forcing 100 Mbps, causing a speed mismatch.

The server auto-negotiated to half duplex because the switch is hard-coded.

The cable is faulty, causing late collisions.

The switch port is set to half duplex.

A network admin is troubleshooting a link between a switch and a router. The switch port is configured with 'speed 100' and 'duplex full'. The router interface is configured with 'speed auto' and 'duplex auto'. The link is up, but the switch shows late collisions and CRC errors. What is the most likely cause?

The switch is forcing full duplex, but the router is forcing half duplex.

The cable is faulty, causing late collisions.

The router auto-negotiated to half duplex because the switch is hard-coded.

The router is set to 10 Mbps, causing a speed mismatch.

CiscoCertified Network Associate (CCNA)

Domain 1Objective 4

1.4 Identify Interface and Cable Issues (collisions, Errors, Mismatch Duplex, And/or Speed) 200-301 Practice Questions (Page 3)

Part of the Network Fundamentals domain, which accounts for 20% of the 200-301 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~10–16 in this domain), expect 1–1 from this objective — we provide 40 practice questions to prepare you well beyond it. (estimate)

40questions here

8free pages

6concepts

20%of the exam

Questions 11–15

11application · medium
A switch port shows a large number of input errors, including runts and CRC errors, but no collisions. The connected device is a server with a 1 Gbps NIC. The cable is a known-good Cat6 patch cord. What should you check next?
Select an answer first
12foundation · easy
A network administrator sees a high number of CRC errors on an interface. Which cause is most likely?
Select an answer first
13expert · hard
A network admin is troubleshooting a link between a switch and a server. The switch port is configured with 'speed 1000' and 'duplex full'. The server NIC is configured with 'speed auto' and 'duplex auto'. The link is up, but the switch shows 'input errors' and 'late collisions'. What is the most likely cause?
Select an answer first
14expert · hard
A network admin is troubleshooting a link between a switch and a router. The switch port is configured with 'speed 100' and 'duplex full'. The router interface is configured with 'speed auto' and 'duplex auto'. The link is up, but the switch shows late collisions and CRC errors. What is the most likely cause?
Select an answer first
15foundation · easy
Which device, when used to connect multiple hosts, separates each host into its own collision domain?
Select an answer first

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1.4 Identify Interface and Cable Issues (collisions, Errors, Mismatch Duplex, And/or Speed) 200-301 Practice Questions (Page 3)

Questions 11–15

A switch port shows a large number of input errors, including runts and CRC errors, but no collisions. The connected device is a server with a 1 Gbps NIC. The cable is a known-good Cat6 patch cord. What should you check next?

A network administrator sees a high number of CRC errors on an interface. Which cause is most likely?

Which device, when used to connect multiple hosts, separates each host into its own collision domain?

Keep studying — Network Fundamentals