单项选择题

You are about to migrate a customer network to use a VSS. Which of these statements is true about a VSS？（）

A.The VSS switch must be the root bridge for all VLANs and is automatically designated.
B.The VSS switch is defined in RFC 4318 as a managed object.
C.The PAgP+ or LACP protocols are used to maintain the operational state of the VSS devices.
D.A VSS interoperates with a virtual port channel.
E.The 802.1Q or ISL protocols are used to maintain the operational state of the VSS devices.
F.A VSS increases the size of the spanning-tree domain.

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多项选择题

Refer to the exhibit.From the MAC addresses shown in the command output，to which two ports is the multicast stream 225.230.57.199 being forwarded on this switch？（）

A.Fa6/28
B.Fa7/20
C.Gi3/7
D.Fa4/2
E.Fa4/14
F.Fa4/38
G.Fa6/38
H.Fa5/7

单项选择题

Refer to the exhibit. When applying this hierarchical policy map on the on the tunnel1 interface, you measure high jitter for traffic going through class 1234. What is the most likely cause of this jitter?（）

A.The configuration of a hierarchical policy map on a tunnel interface is not supported.
B.Class 5555 and class 5554 are both taking up 100% of the bandwidth，leaving nothing for class 1234.
C.The burst size for the traffic shaping is wrongly configured to 15000；this would require an interface capable of sending at 150Mb/s.
D.The burst size for the traffic shaping has been wrongly configured；it should be set as low as possible.
E.The burst size for the traffic shaping has been wrongly configured；it should be set as high as possible.

问答题

在R2的BGP里面：network 198.16.0.0/16 network 10.1.1.0/19 network 10.1.1.0/24.在R1上要求只收：10.1.1.0/19的路由。请选择在R1上面的哪个配置是正确的：
1.access-list 100 permit ip 10.1.0.0 0.0.0.255 host 255.255.224.0
Router bgp 1
Distribute-list 100 in
2.access-list 10 permit 10.1.0.0 0.0.31.0