When a switch receives a frame with a destination MAC address that is not in its MAC address table, what does it do?

It drops the frame because the destination is unknown.

It floods the frame out all ports except the port on which it was received.

It forwards the frame out the port that has the most recent MAC address entry.

It sends the frame to the default gateway.

What triggers the removal of a MAC address entry from a switch's MAC address table?

The switch receiving a broadcast frame

The expiration of the aging timer without any frames received from that MAC address

Receiving a frame with that source MAC address

The switch receiving a frame with an unknown destination MAC address

A switch is experiencing high CPU utilization. The administrator suspects that the switch is flooding an excessive amount of unicast traffic. Which condition would cause this?

The switch is configured with a large number of static MAC entries.

The MAC aging timer is set to the default value.

The switch is running Spanning Tree Protocol and blocking redundant paths.

The MAC address table is full, so the switch cannot learn new MAC addresses and floods unknown unicast frames.

A network administrator is designing a network for a building with multiple floors. Each floor has a switch, and the switches are connected via trunk links. The administrator wants to minimize unnecessary flooding across the trunk links. Which approach would be most effective?

Ensure that all devices on each floor send traffic regularly so the switches learn their MAC addresses.

Use static MAC entries for all devices on the network.

Disable MAC learning on the trunk ports.

Set the MAC aging timer to the minimum value on all switches.

What information is stored in a switch's MAC address table?

MAC addresses and their associated IP addresses

MAC addresses and the ports on which they were learned

VLAN IDs and their associated IP subnets

IP addresses and their associated subnet masks

CiscoCertified Network Associate (CCNA)

Domain 1Objective 13

1.13 Describe Switching Concepts 200-301 Practice Questions (Page 5)

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 32 practice questions to prepare you well beyond it. (estimate)

32questions here

7free pages

5concepts

20%of the exam

Questions 21–25

21foundation · easy
When a switch receives a frame with a destination MAC address that is not in its MAC address table, what does it do?
Select an answer first
22foundation · easy
What triggers the removal of a MAC address entry from a switch's MAC address table?
Select an answer first
23expert · hard
A switch is experiencing high CPU utilization. The administrator suspects that the switch is flooding an excessive amount of unicast traffic. Which condition would cause this?
Select an answer first
24expert · hard
A network administrator is designing a network for a building with multiple floors. Each floor has a switch, and the switches are connected via trunk links. The administrator wants to minimize unnecessary flooding across the trunk links. Which approach would be most effective?
Select an answer first
25foundation · easy
What information is stored in a switch's MAC address table?
Select an answer first

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