单项选择题

Which command can be used from a PC to verfy the connectivity between host that connect through path?（）

A. tracert address
B. ping address
C. arp address
D. traceroute address

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单项选择题

What is the function of the command switchport trunk native vlan 999 on a switch?（）

A. It designates VLAN 999 for untagged traffic.
B. It blocks VLAN 999 traffic from passing on the trunk.
C. It creates a VLAN 999 interface.
D. It designates VLAN 999 as the default for all unkown tagged traffic.

单项选择题

Which IPsec security protocol should be used when confidentiality is required?（）

A. AH
B. MD5
C. PSK
D. ESP

单项选择题

Which command can you use to manually assign a static IPV6 address to a router interface?（）

A. ipv6 address PREFIX_1::1/64
B. ipv6 autoconfig 2001:db8:2222:7272::72/64
C. ipv6 autoconfig
D. ipv6 address 2001:db8:2222:7272::72/64