A network engineer is troubleshooting a legacy network that uses a hub. The engineer sees a high number of collisions on the hub's ports. The engineer wants to reduce collisions without replacing the hub. Which action would be most effective?

Use longer cables to reduce interference.

Change all devices to full duplex.

Reduce the number of devices connected to the hub.

Increase the hub's transmission speed.

A network technician is troubleshooting a switch port that shows a high number of giants and CRC errors. The port is connected to a server with a 1 Gbps NIC. The switch port is configured for 100 Mbps full duplex. What is the most likely cause of the giants and CRC errors?

The server's NIC is faulty, generating oversized frames.

The switch port is set to half duplex, causing collisions.

The cable is too long, causing signal degradation.

The switch port speed is set to 100 Mbps while the server NIC is 1 Gbps, causing a speed mismatch.

Which statement correctly describes the effect of a router on collision domains?

A router does not affect collision domains because it operates at Layer 3

A router combines multiple collision domains into one larger collision domain

A router eliminates collision domains entirely by using full-duplex on all interfaces

A router creates a separate collision domain for each of its interfaces

A switch port shows 'runts' and 'CRC errors' but no collisions. The connected device is a known-good PC. The cable is a new Cat6 cable. The link is up at 1 Gbps full duplex. What is the most likely cause?

The cable is too long, exceeding the distance limit.

The PC is sending frames faster than the switch can process.

The PC's NIC is faulty or has a driver issue.

The switch port is set to half duplex.

On a shared Ethernet segment, what is the primary purpose of the CSMA/CD algorithm?

To convert half-duplex transmissions to full-duplex on the same wire

To prioritize traffic so that high-priority frames are sent first

To prevent all collisions by allowing only one station to transmit at a time

To detect and recover from collisions by having stations back off and retransmit

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 8)

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 36–40

36application · medium
A network engineer is troubleshooting a legacy network that uses a hub. The engineer sees a high number of collisions on the hub's ports. The engineer wants to reduce collisions without replacing the hub. Which action would be most effective?
Select an answer first
37application · medium
A network technician is troubleshooting a switch port that shows a high number of giants and CRC errors. The port is connected to a server with a 1 Gbps NIC. The switch port is configured for 100 Mbps full duplex. What is the most likely cause of the giants and CRC errors?
Select an answer first
38foundation · easy
Which statement correctly describes the effect of a router on collision domains?
Select an answer first
39expert · hard
A switch port shows 'runts' and 'CRC errors' but no collisions. The connected device is a known-good PC. The cable is a new Cat6 cable. The link is up at 1 Gbps full duplex. What is the most likely cause?
Select an answer first
40foundation · easy
On a shared Ethernet segment, what is the primary purpose of the CSMA/CD algorithm?
Select an answer first

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