1. When a packet is sent ** Host1 to Server1, in how many different frames will the packet be encapsulated as it is sent across the internetwork?
(v3.22
F-12)
Answer: 2
问题: 请问具体是那两种封装呢?
2. Which three of these statements regarding 802.1Q trunking are correct? (choose three)
a- 802.1Q native VLAN frames are untagged by default
b- 802.1Q trunking ports can also be secure ports
c- 802.1Q trunks can use 10 Mb/s Ethernet interfaces.
d- 802.1Q trunks should have native VLANs that are the same at both ends.
Answer: a, c, d
问题: 根据参考书《Sybex.CCNA.Study.Guide.6th.Edition 》里对trunk 的描述 “A trunk link is a 100- or 10000 Mbps point-to-point link between two switches...” 那选项c为什么会对呢?
1. ISL ,802.1Q
2. b- 802.1Q trunking ports can also be secure ports 明显错误,下面是1900的配置,你可以看以下
Room-1(config)#int fa0/26
Room-1(config-if)#trunk on
Room-1(config-if)#port secure max-mac-** 1
Error: Addressing security cannot be enabled on a trunk port.