150 CCNA Switch Configuration MCQS with Explanation

91. What is the purpose of a MAC address table on a switch?

  • a) To store IP addresses
  • b) To map MAC addresses to IP addresses
  • c) To map MAC addresses to switch ports
  • d) To manage VLAN membership

Answer: c) To map MAC addresses to switch ports

The MAC address table on a switch maps MAC addresses to specific switch ports, enabling the switch to forward frames to the correct destination.

92. Which command is used to view the ARP table on a Cisco switch?

  • a) show arp
  • b) show mac-address-table
  • c) show interfaces
  • d) show ip arp

Answer: a) show arp

The show arp command displays the ARP table, which maps IP addresses to MAC addresses.

93. The command ip access-group 10 in applies an access list to an interface to filter _____ traffic.

  • a) Incoming
  • b) Outgoing
  • c) Both incoming and outgoing
  • d) Multicast

Answer: a) Incoming

The ip access-group 10 in command applies access list 10 to an interface, filtering incoming traffic.

94. What is the purpose of the show version command on a Cisco switch?

  • a) To display the switch’s IP address
  • b) To display the switch’s configuration
  • c) To display system hardware and software information
  • d) To display the switch’s routing table

Answer: c) To display system hardware and software information


The show version command provides information about the switch’s hardware and software, including the IOS version, uptime, and memory usage.

95. Which command is used to enable a switch port that has been disabled by the shutdown command?

  • a) enable
  • b) no shutdown
  • c) port enable
  • d) no port shutdown

Answer: b) no shutdown

96. Which command is used to configure a switch port as a trunk port?

  • a) switchport mode trunk
  • b) switchport trunk mode
  • c) switchport set trunk
  • d) trunk port

Answer: a) switchport mode trunk

The switchport mode trunk command configures a port to operate as a trunk port, allowing it to carry traffic for multiple VLANs.

97. Fill in the blank: The _____ command is used to view the spanning tree status of a specific VLAN.

  • a) show spanning-tree vlan
  • b) show stp vlan
  • c) show vlan stp
  • d) show spanning-tree status vlan

Answer: a) show spanning-tree vlan

The show spanning-tree vlan command displays the spanning tree status for a specific VLAN.

98. Which of the following commands will show the current switch configuration file in use?

  • a) show startup-config
  • b) show running-config
  • c) show config
  • d) show system-config

Answer: b) show running-config


The show running-config command displays the current configuration file that is actively being used by the switch.

99. What is the default VLAN for untagged traffic on a trunk port?

  • a) VLAN 1
  • b) VLAN 10
  • c) VLAN 100
  • d) VLAN 99

Answer: a) VLAN 1

By default, untagged traffic on a trunk port is associated with VLAN 1 unless otherwise specified.

100. Which command is used to configure a port to allow traffic from multiple VLANs on a trunk port?

  • a) switchport trunk allowed vlan
  • b) switchport vlan allow
  • c) switchport mode trunk
  • d) switchport trunk mode

Answer: a) switchport trunk allowed vlan

The switchport trunk allowed vlan command specifies which VLANs are allowed to pass through a trunk port.
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