单项选择题
What is the function of the command switchport trunk native vlan 999 on a Cisco Catalyst switch?（）
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.
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相关考题
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单项选择题
ACiscorouterisbootingandhasjustcompletedthePOSTprocess.ItisnowreadytofindandloadanIOSimage.Whatfunctiondoestherouterperformnext?（）
A.It checks the configuration register.
B.It attempts to boot from a TFTP server.
C.It loads the first image file in flash memory.
D.It inspects the configuration file in NVRAM for boot instructions. -
多项选择题
Whatfunctionsdoroutersperforminanetwork?(Choosetwo.)（）
A.packet switching
B.access layer security
C.path selection
D.VLAN membership assignment
E.bridging between LAN segments
F.microsegmentation of broadcast domains -
单项选择题
AtwhichOSIlayerisalogicalpathcreatedbetweentwohostsystems?（）
A.session
B.transport
C.network
D.data link
E.physical
