单项选择题You are designing your network to be able to use trunks. As part of this process you are comparing the ISL and 802.1Q encapsulation options. All of these statements about the two encapsulation options are correct except which one? ()

A. Both support normal and extended VLAN ranges.
B. ISL is a Cisco proprietary encapsulation method and 802.1Q is an IEEE standard.
C. ISL encapsulates the original frame.
D. Both support native VLANs.
E. 802.1Q does not encapsulate the original frame.


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1.单项选择题How will EIGRPv6 react if there is an IPv6 subnet mask mismatch between the Global Unicast addresseson a point-to-point link?()

A.EIGRPv6 will form a neighbor relationship.
B.EIGRPv6 will not form a neighbor relationship.
C.EIGRPv6 will form a neighbor relationship, but with the log MSG: "EIGRPv6 neighbor not on a commonsub net."
D.EIGRPv6 will form a neighbor relationship, but routes learned from that neighbor will not be installed inthe routing table.

2.多项选择题Which three of these statements about Dynamic Trunking Protocol are correct?()

A. It supports autonegotiation for both ISL and IEEE 802.1Q trunks.
B. It must be disabled on an interface if you do not want the interface to work as a trunk or start negotiation to become a trunk.
C. It is a point-to-multipoint protocol.
D. It is a point-to-point protocol.
E. It is not supported on private VLAN ports or tunneling ports.

4.单项选择题Which of these correctly identifies a difference between the way BPDUs are handled by 802.1w and 802.1D? ()

A. 802.1D bridges do not relay BPDUs.
B. 802.1w bridges do not relay BPDUs.
C. 802.1D bridges only relay BPDUs received from the root.
D. 802.1w bridges only relay BPDUs received from the root.

5.单项选择题What is the first thing that happens when IPv6 is enabled on an interface on a host?()

A.A router solicitation is sent on that interface.
B.There is a duplicate address detection on the host interface.
C.The link local address is assigned on the host interface.
D.A neighbor redirect message is sent on the host interface.

6.单项选择题What action will a BGP route reflector take when it receives a prefix marked with the community attribute NO ADVERTISE from a client peer?()

A.It will advertise the prefix to all other client peers and non-client peers.
B.It will not advertise the prefix to EBGP peers.
C.It will only advertise the prefix to all other IBGP peers.
D.It will not advertise the prefix to any peers.

7.单项选择题

Refer to the exhibit. Which switching feature is being tested?()

A. loop guard
B. PortFast
C. root guard
D. BDPU guard

8.多项选择题Which two options does Cisco PfR use to control the entrance link selection with inbound optimization?()

A.Prepend extra AS hops to the BGP prefix.
B.Advertise more specific BGP prefixes (longer mask).
C.Add (prepend) one or more communities to the prefix that is advertised by BGP.
D.Have BGP dampen the prefix.

9.多项选择题Which three combinations are valid LACP configurations that will set up a channel?()

A.On/On
B.On/Auto
C.Passive/Active
D.Desirable/Auto
E.Active/Active
F.Desirable/Desirable

10.单项选择题In 802.1s, how is the VLAN to instance mapping represented in the BPDU?()

A.The VLAN to instance mapping is a normal 16-byte field in the MST BPDU.
B.The VLAN to instance mapping is a normal 12-byte field in the MST BPDU.
C.The VLAN to instance mapping is a 16-byte MD5 signature field in the MST BPDU.
D.The VLAN to instance mapping is a 12-byte MD5 signature field in the MST BPDU.

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