Q. 61:
What command would you use to manually remove a MAC address from the MAC address table of a switch?
a) remove mac address
b) clear mac address-table dynamic
c) erase mac address
d) delete mac-address-table
Answer: (b) clear mac address-table dynamic
Q. 62:
What is the maximum length of an Ethernet frame including the CRC but excluding the preamble?
a) 1518 bytes
b) 1500 bytes
c) 1522 bytes
d) 1492 bytes
Answer: (a) 1518 bytes
Q. 63:
Which command is used to disable trunking on a switch port?
a) no switchport trunk
b) switchport trunk disable
c) switchport mode access
d) switchport no trunk
Answer: (c) switchport mode access
Q. 64:
What is the default spanning tree protocol on most Cisco switches?
a) STP
b) PVST+
c) RSTP
d) MSTP
Answer:( b) PVST+ (Per VLAN Spanning Tree Plus)
Q. 65:
Which command can be used to verify the allowed VLANs on a trunk port?
a) show vlan trunk
b) show interface trunk
c) show allowed vlans
d) show vlan allowed
Answer: (b) show interface trunk
Q. 66:
What is the purpose of BPDU Guard in a network?
a) To prevent the formation of loops
b) To prevent the switch from processing BPDUs on access ports
c) To ensure BPDU frames are forwarded through trunk links
d) To block unauthorized switches from sending BPDU packets
Answer: (b) To prevent the switch from processing BPDUs on access ports
Q. 67:
Which switch port mode prevents the port from negotiating trunking but still allows it to become a trunk if the other side requests it?
a) Dynamic desirable
b) Dynamic auto
c) Access
d) Passive
Answer: (b) Dynamic auto
Q. 68:
In 802.1Q, what VLAN tag is inserted into the Ethernet frame header?
a) 2-byte
b) 4-byte
c) 6-byte
d) 8-byte
Answer: (b) 4-byte
Q. 69:
Which Cisco technology allows multiple switches to be interconnected and operate as a single switch?
a) StackWise
b) EtherChannel
c) FlexLink
d) PortFast
Answer: (a) StackWise
Q. 70:
Which type of switch port security violation shuts down the interface after detecting a violation?
a) Protect
b) Restrict
c) Shutdown
d) Block
Answer: (c) Shutdown.
