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

Sends the frame to the default gateway

Broadcasts the frame to all ports on the switch

Forwards the frame out all ports except the port it arrived on

A switch learns that MAC address 00:11:22:33:44:55 is reachable via port 5. Later, the same MAC address appears as the source of a frame on port 12. What does the switch do?

Updates its MAC address table to associate the MAC address with port 12.

Creates a second entry for the same MAC address on port 12.

Drops the frame because the MAC address is already known on port 5.

Forwards the frame only to port 5.

A hospital has a flat network with all devices in one VLAN. The IT team must prevent patient-monitoring devices from receiving broadcast traffic from guest Wi-Fi devices, while still allowing the monitoring devices to communicate with a central server. The switch supports VLANs and MAC filtering. What is the most effective approach?

Use MAC address filtering to block all guest Wi-Fi devices from the network.

Place all devices in the same VLAN but enable port security on the monitoring device ports.

Replace the switch with multiple hubs to separate traffic.

Create separate VLANs for monitoring devices and guest Wi-Fi, and configure routing between the monitoring VLAN and the server VLAN.

A switch has a MAC address filter that allows only a specific list of MAC addresses to send traffic. A device with a MAC address not on the list sends a frame. What happens?

The switch sends the frame to the router for approval

The switch forwards the frame to all ports

The switch adds the MAC to the allowed list

A network administrator wants to block a specific device from sending traffic on the network. The device's MAC address is known. Which configuration should be applied on the switch?

Add the MAC address to a deny list in MAC address filtering

Enable Spanning Tree Protocol on the switch

Change the VLAN of the port the device is connected to

Disable the MAC address table aging timer

CiscoCertified Support Technician (CCST) Networking

Domain 4Objective 5

4.5. Explain Basic Switching Concepts. 100-150 Practice Questions (Page 3)

Part of the Infrastructure domain, which makes up ~18% of our current practice bank. Cisco does not publish an official question count, but from its 50-minute exam (~20–35 total, ~4–6 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

3concepts

Questions 11–15

11foundation · easy
When a switch receives a frame with a destination MAC address that is not yet in its MAC address table, what does the switch do?
Select an answer first
12application · medium
A switch learns that MAC address 00:11:22:33:44:55 is reachable via port 5. Later, the same MAC address appears as the source of a frame on port 12. What does the switch do?
Select an answer first
13expert · hard
A hospital has a flat network with all devices in one VLAN. The IT team must prevent patient-monitoring devices from receiving broadcast traffic from guest Wi-Fi devices, while still allowing the monitoring devices to communicate with a central server. The switch supports VLANs and MAC filtering. What is the most effective approach?
Select an answer first
14application · medium
A switch has a MAC address filter that allows only a specific list of MAC addresses to send traffic. A device with a MAC address not on the list sends a frame. What happens?
Select an answer first
15application · medium
A network administrator wants to block a specific device from sending traffic on the network. The device's MAC address is known. Which configuration should be applied on the switch?
Select an answer first

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