Q. 101:
What type of VLAN does not require tagging over a trunk link?
a) Default VLAN
b) Native VLAN
c) Management VLAN
d) Data VLAN
Answer: (b) Native VLAN
Q. 102:
Which protocol uses advertisements to prevent VLAN inconsistencies across multiple switches?
a) CDP
b) VTP
c) PAgP
d) LACP
Answer: (b) VTP (VLAN Trunking Protocol)
Q. 103:
What is the primary function of a root bridge in a Spanning Tree Protocol (STP) topology?
a) To calculate the path cost
b) To prevent VLAN mismatches
c) To control frame forwarding
d) To serve as the reference point for all path calculations
Answer: (d) To serve as the reference point for all path calculations
Q. 104:
Which command verifies the switch port security settings, including violation mode and MAC address count?
a) show port-security
b) show interface security
c) show security status
d) show port-violations
Answer: (a) show port-security
Q. 105:
What is the main reason for using EtherChannel on a switch?
a) To enable VLAN segmentation
b) To bundle multiple physical links into one logical link
c) To distribute VLAN information between switches
d) To reduce MAC address table size
Answer: (b) To bundle multiple physical links into one logical link
Q. 106:
Which spanning tree feature helps prevent loops in an STP topology when multiple links exist between switches?
a) PortFast
b) BPDU Guard
c) Loop Guard
d) UplinkFast
Answer: (c) Loop Guard
Q. 107:
Which command displays the port-security configuration for all interfaces on a Cisco switch?
a) show port-security
b) show port-security interface
c) show running-config
d) show mac address-table security
Answer: (a) show port-security
Q. 108:
Which of the following VLANs cannot be deleted or modified on a Cisco switch?
a) VLAN 1002
b) VLAN 1
c) VLAN 2
d) VLAN 10
Answer: (b) VLAN 1
Q. 109:
Which command displays the interfaces that are currently in the err-disabled state?
a) show errdisable status
b) show interface status
c) show interfaces err-disabled
d) show errdisable interfaces
Answer: (c) show interfaces err-disabled
Q. 110:
Which protocol is responsible for ensuring all switches in a network have consistent VLAN information?
a) CDP
b) LLDP
c) VTP
d) DTP
Answer: (c) VTP
