單項(xiàng)選擇題What is the effect of changing DMT interleaved delay from 3 milliseconds to 15 milliseconds?()

A.Latency remains the same, but throughput is decreased.
B.Latency remains the same, but error correction effectives may also be reduced.
C.Latency is increased, but faster error correction occurs.
D.Fewer ATM PVCs can be provisioned on DSL line.


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1.單項(xiàng)選擇題When gateways are registering with a gatekeeper, the gatekeeper can be().

A.On the same subnet
B.On a remote LAN
C.In a different subnet
D.Any of the above

2.單項(xiàng)選擇題What is the relationship between the Domain Name System (DNS) and LDAP?()

A.All the root DNS servers maintain information in a distributed LDAP tree.
B.DNS clients access DNS information by making LDAP queries to DNS servers.
C.An LDAP DN attribute is a Domain Name.
D.It is currently recommended to express DN as a sequence of Domain components.

3.多項(xiàng)選擇題The OSPF External LSA for prefix x.x.x.x exists in the OSPF database, but the prefix is not installed in therouting table. Which are possible explanations?()

A.Inbound distribute-list is configured under the ospf process and it is denying x.x.x.x
B.ASBR origination the LSA is not reachable
C.Route to the Forwarding Address in not an internal OSPF route
D.Route to the Forwarding Address is an internal OSPF route
E.Route to the ASBR does not follow the same path as the one to the Forwarding Address

4.單項(xiàng)選擇題What statement about Transit AS is true?()

A.Traffic and prefixes originating from Source AS are carried across a Transit AS to reach theirdestination AS
B.Traffic and prefixes originating from Transit AS are carried across a Stub AS to their destination AS
C.Traffic and prefixes originating from Transit AS are carried across a Stub AS to their Source AS
D.None of the above

5.單項(xiàng)選擇題The ASBR-summary LSA is:().

A.Generated by the ASBR and describes reachability to itself
B.Generated by the ASBR and describes reachabilty to the ABR
C.Generated by the ABR and describes reachabilty to the ASBR for routers in a different area from the ASBR
D.Generated by the ABR and describes reachabilty to the ASBR for routers in the same area with the ASBR

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