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.


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1.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

2.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

3.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

5.單項(xiàng)選擇題What is used to provide read access to QoS configuration and statistics information on Cisco platforms thatsupport Modular QoS CLI （MQC）？（）

A.Cisco NBAR Discovery
B.Cisco AutoQoS
C.Cisco Class-Based QoS MIB
D.Cisco SDM QoS Wizard
E.CDP