A network administrator is troubleshooting a link between a switch and a server. The link is up, but the server is experiencing slow performance. The administrator checks the switch port and sees a high number of late collisions and CRC errors. The server's NIC is configured for 1 Gbps full duplex, and the switch port is set to auto-negotiation. The administrator wants to resolve the issue with minimal downtime. What should the administrator do?

Configure the switch port to 1 Gbps full duplex to match the server.

Replace the cable between the switch and server.

Set the server's NIC to auto-negotiation.

A network has a switch connected to a hub, and the hub connects to several PCs. The switch port shows a high number of collisions and runts. The PCs are configured for full duplex. What is the most likely issue?

The switch port is set to half duplex, but the hub is full duplex.

The cable between the switch and hub is faulty.

The PCs are using full duplex, which causes collisions on the hub.

The PCs are in the same collision domain as the switch port, and the hub does not support full duplex.

A legacy network uses a hub to connect several PCs. During a large file transfer, the network becomes very slow and the hub's collision LED flashes frequently. What is the primary reason for the frequent collisions?

The hub is malfunctioning and corrupting frames.

The PCs are using full duplex, which causes collisions on a hub.

All devices share the same collision domain, so simultaneous transmissions collide.

The cable lengths are too long, causing signal reflections.

A switch port shows 'input errors' that include 'runts', 'giants', and 'CRC errors'. The port is connected to a server. The link is up at 1 Gbps full duplex. The cable is a known-good Cat6 cable. What is the most likely cause?

The cable is experiencing electromagnetic interference.

The switch port is set to half duplex.

The server is sending traffic at a rate that exceeds the switch's buffer.

The server NIC is faulty or has a driver issue.

A network administrator notices that a switch port connected to a legacy printer shows a high number of runts and CRC errors, but no collisions. The printer is connected via a 10 Mbps hub to the switch port. The switch port is configured for 100 Mbps full duplex. What is the most likely cause of the errors?

The hub is causing collisions, which are seen as runts and CRC errors on the switch port.

The switch port is set to 100 Mbps while the hub operates at 10 Mbps, causing a speed mismatch and frame corruption.

The cable is too long, exceeding the Ethernet distance limit.

The printer's NIC is faulty, generating malformed frames.

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 1)

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 1–5

1expert · hard
A network administrator is troubleshooting a link between a switch and a server. The link is up, but the server is experiencing slow performance. The administrator checks the switch port and sees a high number of late collisions and CRC errors. The server's NIC is configured for 1 Gbps full duplex, and the switch port is set to auto-negotiation. The administrator wants to resolve the issue with minimal downtime. What should the administrator do?
Select an answer first
2expert · hard
A network has a switch connected to a hub, and the hub connects to several PCs. The switch port shows a high number of collisions and runts. The PCs are configured for full duplex. What is the most likely issue?
Select an answer first
3application · easy
A legacy network uses a hub to connect several PCs. During a large file transfer, the network becomes very slow and the hub's collision LED flashes frequently. What is the primary reason for the frequent collisions?
Select an answer first
4application · medium
A switch port shows 'input errors' that include 'runts', 'giants', and 'CRC errors'. The port is connected to a server. The link is up at 1 Gbps full duplex. The cable is a known-good Cat6 cable. What is the most likely cause?
Select an answer first
5application · medium
A network administrator notices that a switch port connected to a legacy printer shows a high number of runts and CRC errors, but no collisions. The printer is connected via a 10 Mbps hub to the switch port. The switch port is configured for 100 Mbps full duplex. What is the most likely cause of the errors?
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 1)

Questions 1–5

A network has a switch connected to a hub, and the hub connects to several PCs. The switch port shows a high number of collisions and runts. The PCs are configured for full duplex. What is the most likely issue?

A legacy network uses a hub to connect several PCs. During a large file transfer, the network becomes very slow and the hub's collision LED flashes frequently. What is the primary reason for the frequent collisions?

A switch port shows 'input errors' that include 'runts', 'giants', and 'CRC errors'. The port is connected to a server. The link is up at 1 Gbps full duplex. The cable is a known-good Cat6 cable. What is the most likely cause?

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