Jeremy Ccna Lab
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802.1Q tag: The [...] field identifies the VLAN the frame belongs to.
VID
802.1Q tag: The [...] field indicates that a frame can be dropped if the network is congested.
DEI
802.1Q tag: The [...] field is use for Class of Service.
PCP
802.1Q tag: The DEI field is [...] in length.
1 bit
802.1Q tag: The PCP field is [...] bits in length.
3
802.1Q tag: The TPID field is [...] bits in length.
16
802.1Q tag: The TPID field is alway set to a value of [...]
0x8100
802.1Q tag: What does DEI stand for?
Drop Eligible Indicator
802.1Q tag: What does PCP stand for?
Priority Code Point
802.1Q tag: What does TPID stand for?
Tag Protocol Identifier
802.1Q tag: What does VID stand for?
VLAN ID
Configure the allowed VLANs on a trunk port: SW1(config-if)# [...]
switchport trunk allowed vlan allowed-vlans
Configure the encapsulation type on a trunk port: SW1(config-if)# [...]
switchport trunk encapsulation encapsulation-type
Configure the interface as a trunk port: SW1(config-if)# [...]
switchport mode trunk
Configure the native VLAN on a trunk port: SW1(config-if)# [...]
switchport trunk native vlan vlan-number
Configure the VLAN number on a router subinterface: R1(config-subif)# [...]
encapsulation dot1q vlan-number
Display all trunk ports on the switch: SW1# [...]
show interfaces trunk
For security purposes, it is best to change the native VLAN to an [...] VLAN.
unused
ROAS involves configuring VLAN tags and IP addresses on router [...].
subinterfaces
The 802.1Q tag is [...] bytes in length.
4
The 802.1Q tag is inserted after the [...] field of the Ethernet header.
Source MAC Address
The default native VLAN is VLAN [...] on all trunk ports.
1
The Extended VLAN range is [...] to [...]
1006 to 4094
The Normal VLAN range is [...] to [...]
1 to 1005
The range of usable VLANs is [...] to [...]
1 to 4094
The switch does not add an 802.1Q tag to frames in the [...] VLAN over a trunk link.
native
VLANs [...] and [...] are reserved and cannot be used.
0 / 4095
VLANs: [...] ports are known as 'tagged' ports.
Trunk
VLANs: [...] ports are known as 'untagged' ports.
Access
VLANs: Switches will tag frames sent out of [...] ports with a VLAN number.
trunk
What is a Cisco proprietary VLAN trunking protocol?
ISL (Inter-Switch Link)
What is an industry standard VLAN trunking protocol?
IEEE 802.1Q (dot1q)
When a switch receives an untagged frame on a trunk port, it assumes the frame belongs to the [...] VLAN.
native
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