多项选择题
At which layers of the OSI model do WANs operate? (Choose two.)（）
A.application layer
B.session layer
C.transport layer
D.network layer
E.datalink layer
F.physical layer
相关考题
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多项选择题
WhichthreestatementsdescribethedifferencesbetweenRIPversion1andRIPversion2?(Choosethree.)（）
A.RIP version 1 broadcasts updates whereas RIP version 2 uses multicasts.
B.RIP version 1 multicasts updates while RIP version 2 uses broadcasts.
C.Both RIP version 1 and RIP version 2 are classless routing protocols.
D.RIP Version 2 is a classless routing protocol whereas RIP version 1 is a classful routing protocol.
E.Both RIP version 1 and version 2 support authentication.
F.RIP version 2 sends the subnet mask in updates and RIP version 1 does not. -
单项选择题
Whenanewtrunkisconfiguredona2950switch,whichVLANsbydefaultareallowedoverthetrunklink?（）
A.no VLANs
B.all VLANs
C.only VLANs 1 - 64
D.only the VLANs that are specified when creating the trunk -
单项选择题
Whatisthefunctionofthecommandswitchporttrunknativevlan999onaCiscoCatalystswitch?（）
A.It creates a VLAN 999 interface.
B.It designates VLAN 999 for untagged traffic.
C.It blocks VLAN 999 traffic from passing on the trunk.
D.It designates VLAN 999 as the default for all unknown tagged traffic.
