An engineer uses 2 routers to test Pv6 services and runs OSPFV3 to achieve interconnection and interoperability of IPV6 networks The RI has access to the loopback address of R2 The engineer looks at ri's OSPF3 routing table entry and finds that there is no route reaching the R2 loopback address It can't be caused by which of the following?
A. R2 does not enable OSPFv3 on the loopback port
B. R2 does not advertise the loopback address
C. R2 in area 0 to advertise the loopback into a different OSPFv3 process
D. R2 does not configure the Router ID used in the OSPFv3 process
The following statement about the BFD one-arm echo function is correct (multiple choice).
A. The BFD one-arm echo function must be configured with local identifiers and carrier identifiers
B. The default destination IP address for the protocol message for BFD one-arm echo is 22400184
C. After the BFD one-arm echo function is turned on, the destination IP and source IP of the BFD message are inducted
D. BFD One-Arm Echo function is suitable for scenarios where one device supports BDD and the other device does not support
The Option field in OSPEv3 appears in all LSAs
A. True
B. False
IGMP SSMMapping is bound to multicast through a static multicast source, so that members of IGMPv1 and IGMP2 can also access the SSM multicast network. The following statement about IGMPSSMMapping is wrong?( Radio).
A. The multicast address of the SSM is 232000~232255255255
B. IGMP SSM Mapping does not process reporting messages from IGMPv3 In order to ensure that the same network segment runs any version
C. IGMP hosts can make SSM services run IGMPv3 on the multicast router socket connected to the network segment where the member host is located
D. If the IGMP SSM Mapping feature is not enabled, neither IGMPv1 nor IGMPv2 supports multicast for deploying SSM modules
With an existing network running OSPF, what types of LSAs cause ISPF operations?
A. 2 ?LSA
B. 3 ?LSA
C. 1 ?LSA
D. 5 ?LSA
E. 4 ?LSA
Regarding the LDP protocol session establishment process, the description is correct?
A. When both parties receive a keepalive message from the peer, the LDP session is successfully established
B. Hello messages discovered by LDP neighbors use TCP messages with a destination address of multicast address 224002
C. After the TCP connection is successfully established, the active party sends an initialization message to negotiate the relevant parameters of the LDP session,
D. The party with the larger transmission address initiates the establishment of a TCP connection as the active party
Regarding the DSCP field, the following statement is incorrect: single selection
A. The DSCP value can be 0, and packets use the default forwarding mechanism when 0
B. When the value of DSCP is EF, it indicates that the data belongs to the accelerated forwarding class.
C. In addition to indicating the priority of the data, DSCP can also indicate the probability of data being discarded. The CS class in D. DSCP divides data into 8 priorities.
The advantages of building a campus network using stacking, clustering technology include which of the following?( Multi-select)
A. Improved network equipment and link utilization
B. It can effectively reduce network power consumption
C. Business disruption time is greatly reduced
D. Simplifies network management and reduces the complexity of network deployment planning
The following description of MP-BGP is incorrect?( Single choice questions).
A. The MP_UNREACH_NLRl of the update message, excluding the path nationality.
B. MP-BGP can be used to assign tags.
C. MP_REACH_NLRI and MP_UNREACIH_NLRI are optional transition properties.
D. A complete MP_REACH_NLRI attribute structure contains address family, next hop, and prefix information.
Assume that BGP/MPLSIPVVPN, OSPF, LDP, and static routing protocols are already enabled on the PE router . Which of the following protocols need to enable GR on PE in order to get NSF functionality? (Multiple choice questions).
A. BGP
B. Static circuit
C. OSPF
D. MPLS LDP
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