多項選擇題Which two options best describe the purpose of session ID and cookie field in a L2TPv3 packet?()

A.The session ID is a 32-bit locally significant field used to identify the call on the destination or egresstunnel endport. The session ID will be negotiated by the control connection or statically defined if usingthe L2TP v3 data plane only
B.The cookie is a variable length(with a maximum of eight bytes),word-aligned optional field. The controlconnection can negotiate this as an additional level of guarantee beyond the regular session ID lookupto make sure that a data message has been directed to the correct session or that any recently reusedsession ID will not be misdirected
C.The cookie is a 32-bit locally significant field used to identify the call on the destination or egress tunnelendpoint. The cookie will be negotiated by the control connection or statically defined if using theL2TPv3 data plane only
D.The session ID is a variable length(with a maximum of eight bytes),word-aligned optional field the control connection can negotiate this as an additional level of guarantee beyond the regular cookielookup to make sure that a data message has been directed to the correct session or that any recentlyreused cookie will not be misdirected.


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1.多項選擇題Select 3 AVPs (Attribute-Value Pair) which MUST be present in the ICRQ:()

A.Message Type
B.Calling Number
C.Assigned Session ID
D.Called Number
E.Call Serial Number

2.多項選擇題What ISIS TLVs are used to support MPLS-traffic Engineering?()

A.Extended IS neighbor TLV # 22
B.Extended IS name TLV #137
C.Extended IS resource TLV #138
D.Extended IS reachability TLV #135
E.Router ID TLV # 134

3.多項選擇題Which 4 statements regarding MPLS Label Stack Encoding is true?()

A.A value of 4 represents the "Implicit NULL Label."
B.A value of 0 represents the "IPv4 Explicit NULL Label."
C.A value of 1 represents the "Router Alert Label". The use of this label is analogous to the use of the"Router Alert Option" in IP packets (for example, ping with record route option)
D.A value of 2 represents the "IPv6 Explicit NULL Label"
E.A value of 1 represents the "IPv1 Explicit NULL Label"
F.A value of 3 represents the "Implicit NULL Label"

4.多項選擇題RIPv2 differs from RIPv1 in that:()

A.it uses multicast address 224.0.0.10,instead of broadcast
B.it uses multicast address 224.0.0.9,instead of broadcast
C.it can use either multicast or broadcast addresses,instead of just broadcast
D.it sends incremental updates,instead of periodic updates
E.it is classless,instead of classful
F.it supports authentication,and RIPv1 does not

5.單項選擇題What is the requirement of Remote Triggered Black Hole (RTBH ) filtering?()

A.IBGP updates exchange between trigger router and black hole router
B.EBGP updates exchange between trigger router and black hole router
C.OSPF updates exchange between trigger router and black hole router
D.ISIS updates exchange between trigger router and black hole router

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