150 CCNA Switch Configuration MCQS with Explanation

111. Which command is used to verify if a switch port is operating in full-duplex mode?

  • a) show interfaces status
  • b) show duplex
  • c) show interface
  • d) show interfaces duplex

Answer: a) show interfaces status

The show interfaces status command provides information about the duplex mode of the interfaces.

112. Fill in the blank: The _____ command configures an interface to automatically negotiate speed and duplex settings.

  • a) auto negotiate
  • b) speed auto
  • c) duplex auto
  • d) speed duplex auto

Answer: d) speed duplex auto

The speed duplex auto command configures an interface to automatically negotiate both speed and duplex settings.

113. Which command is used to display the status of VLANs and their associated ports?

  • a) show vlan brief
  • b) show vlan status
  • c) show vlan ports
  • d) show vlan summary

Answer: a) show vlan brief

The show vlan brief command provides a summary of VLANs, including their status and the ports associated with each VLAN.

114. Fill in the blank: The _____ command is used to configure a port as a member of a specific VLAN.

  • a) switchport vlan
  • b) switchport access vlan
  • c) vlan port
  • d) vlan member

Answer: b) switchport access vlan


The switchport access vlan command assigns a port to a specific VLAN.

115. What is the purpose of the show spanning-tree vlan command?

  • a) To display the VLAN configuration
  • b) To show the status of Spanning Tree Protocol for a specific VLAN
  • c) To display the VLAN traffic statistics
  • d) To configure Spanning Tree Protocol

Answer: b) To show the status of Spanning Tree Protocol for a specific VLAN

The show spanning-tree vlan command shows the Spanning Tree Protocol status for the specified VLAN.

116. Fill in the blank: The _____ command is used to configure a static MAC address on a switch port.

  • a) mac-address static
  • b) switchport mac-address
  • c) mac-address-table static
  • d) static mac-address

Answer: c) mac-address-table static

The mac-address-table static command is used to configure a static MAC address entry in the MAC address table.

117. Which command provides a detailed view of the configuration for a specific VLAN?

  • a) show vlan id
  • b) show vlan detail
  • c) show vlan configuration
  • d) show vlan

Answer: b) show vlan detail

The show vlan detail command provides detailed information about the configuration of a specific VLAN.

118. Fill in the blank: The _____ command displays a summary of all the switch’s interfaces, including their status and IP addresses.

  • a) show ip interfaces
  • b) show interfaces summary
  • c) show ip interface brief
  • d) show interface status

Answer: c) show ip interface brief


The show ip interface brief command provides a concise summary of all interfaces, including their IP addresses and status.

119. What is the purpose of configuring a VLAN interface on a switch?

  • a) To enable trunking
  • b) To allow inter-VLAN routing
  • c) To configure port security
  • d) To manage VLAN membership

Answer: b) To allow inter-VLAN routing

Configuring a VLAN interface allows for inter-VLAN routing, enabling communication between different VLANs.

120. The command show ip route displays the _____ table.

  • a) ARP
  • b) Routing
  • c) MAC address
  • d) VLAN

Answer: b) Routing

The show ip route command displays the IP routing table, which includes all known routes and their associated metrics.
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