Cisco CCNA mock exam questions sample test – Question 136

.DRAG DROP
Click and drag the features on the left to their corresponding frame tagging method on the right.

Select and Place:

Correct Answer:

Explanation:
ISL and IEEE 802.1Q are VLAN frame tagging methods.
ISL:
Is Cisco proprietary
Adds a 26-byte header and 4-byte trailer
Does not modify Ethernet frame
IEEE 802.1Q frame tagging method:
Is a standard method
Adds a 4-byte tag in the middle of original Ethernet frame
Has a concept called native VLAN. Native VLAN frames are not tagged while traversing over a trunk link.
Objective:
LAN Switching Fundamentals
Sub-Objective:
Configure, verify, and troubleshoot interswitch connectivity
References:
Cisco > Technology Support > LAN Switching > Virtual LANs/VLAN Trunking Protocol (VLANs/VTP) > Design > Design Technotes > Inter-Switch Link and IEEE 802.1Q Frame
Format > Document ID: 17056