多項選擇題Which three of these are optical channel data unit （ODU） overhead fields？ （）

A.general communication channel 0 （GCC0）
B.section monitoring
C.reserved （RES）
D.general communication channels 1 and 2 （GCC1 GCC2）
E.tandem connection monitoring activation deactivation （TCM ACT）


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1.單項選擇題Which statement about OSPF ASBR summary LSA is true？（）

A.It is generated by an ASBR and indicates the reachability to an ABR located in another area.
B.It is generated by ABR and indicates the reachability to an ASBR located in another AS.
C.It is generated by ABR and indicates reachability to itself.
D.It is generated by ABR and indicates the reachability to an ASBR located in another area.
E.It is generated by ASBR and indicates the reachability to an ABR.

2.多項選擇題Which two models are the models of DiffServ-Award traffic Engineering？（）

A.Class-based Model
B.Maximum Allocation Model
C.Russian Doll Model
D.Global Tunnel Model
E.Policy-based Model

3.單項選擇題What are the address Family Identifier （AFI） and subsequent Address family Identifier ASAFI） values from VPNv6？（）

A.AFI is 2， SAFI is 128
B.AFI is 1， SAFI is 64
C.AFI is 2， SAFI is 64
D.AFI is 1， SAFI is 96
E.AFI is 2， SAFI is 96
F.AFI is 1， SAFI is 128

4.多項選擇題Which three modes are the operating modes of HDLC？ （）

A.asynchronous response mode （ARM）
B.normal peer mode （NPM）
C.asynchronous balanced mode （ABM）
D.normal response mode （NRM）
E.asynchronous client mode （ACM）

6.單項選擇題Which statement about the Cisco MPLS Traffic Engineering class-based tunnel selection （CBTS） is nottrue？（）

A.Local mechanism is at the middle-point router.
B.EXP selection is between multiple tunnels to the same destination
C.Bundle members are configured with EXP values to carry.
D.The tunnel selection is configured on the tunnel master.
E.The tunnel master bundles the tunnel members

7.多項選擇題Which two statements about MPLS Label Distribution Protocol （LDP） are true？ （）

A.LDP hello packets are sent to TCP 646.
B.LDP session packets are sent to TCP 646.
C.LDP session packets are sent to TCP 711.
D.LDP hello packets are sent to TCP 711.
E.LDP hello packets are sent to UDP 711.
F.LDP hello packets are sent to UDP 646.

8.多項選擇題Which three statements about the secure domain router are true？（）

A.The logical router can span across chassis.
B.The fabric and system controller module are shared by all logical routers.
C.Each logical router has a distinct fabric and system controller module
D.The logical router can share a route processor
E.The logical router cannot share a route processor

9.多項選擇題Which two statements about VPNv4 address are true？ （）

A.The VPNv4 address is 128 bits long with a 128-bit long subnet mask
B.The VPNv4 address consists of an RD and an IPv4 address
C.The VPNv4 address is 96 bits long with a 64-bit long subnet mask
D.The VPNv4 address is 128 bits long with a 64-bit long subnet mask
E.The VPNv4 address consists of an RT and an IPv4 address
F.The VPNv4 address is 96 bits long with a 32-bit long subnet mask

10.多項選擇題Which three statements about anycast RP are true？ （）

A.MSDP is running between anycast RPs
B.Anycast RP provides redundancy and load-sharing capabilities
C.Multicast BGP is running between anycast RPs
D.In anycast RP，two or more RPs are configured with the same multicast IP address on loopback interfaces
E.In anycast RP，two or more RPs are configured with the same unicast IP address on loopback interfaces