If there is a switch running RSTP, which interface on that switch sends the BPDU with the Proposal logo??

A. The specified port

B. in the forwarding state. The specified port in a non-forwarding state

C. Alternate port

D. The root port in the Blocking state

OSPFV is the GP running on the P4 network) OSPF3 is the KGP running on the IP6 network. OsPFV works the same basic way as OSPF2, such as elections for DR and BDR. As shown in the figure, an engineer uses three routers for IP6 service testing, and he wants to interconnect the IPv6 network by running OSPFv3 Which of the following statements is correct regarding the election of the network DR?

A. After the network converges, R1 is DR

B. After the network converges, the engineer modifies the priority of R1 to 100, the priority of R2 to 10, and R3 to the default value. When the network converges again, Rl is DR and R2 is BDR

C. After the network converges, the broadcast link adds a device, R4, with a priority of 150 When the network converges again, R4 is DR

D. After the network converges, R1 is powered off and restarted, and when the network converges again, R3 is DR

The Option field in OSPEv3 appears in all LSAs

A. True

B. False

In cross-domain VPN-OptionB packet forwarding, two ASBRs exchange the same LSP tags once.

A. True

B. False

Regarding IPv6 over IP4(19) road, the following statement is correct

A. The 6to4 automatic tunnel requires the use of a specific IP6 address segment, and the assigned address segment is preceded by 3ffe::/16

B. When configuring manual tunneling on the VRP platform, a Tunnel interface is generally created; When configuring automatic tunneling, a Vrua-Template interface is usually created

C. The ISATAP tunnel determines the destination IPV4 address of the tunnel based on the destination IP6 address.

D. All automatic tunnels encapsulate data in the same way.

E. Automatic tunneling has great advantages over manual tunneling, and manual tunneling will be phased out

What is the exact description of the SSM features?

A. Using SSM, the receiver can use INCLUDE in IGMPv3 to indicate that the source

B. SSM he wishes to join is an extension of the DVMP protocol. to efficiently transmit one- to-many communication traffic

C. SSM requires MSDP to discover active sources in other PIM domains

D. Routing multicast traffic in the SSM is done by relying on the number of sources, and the RP is used for the receiver to answer the corresponding number of sources

Regarding the tag space for MPLS, the description is incorrect

A. When the penultimate hop LSR performs a label swap, if the swapped tag value is found to be

B. the tag is popped up by default and the message is sent to the last hop

C. Above 1024 is the tag space shared by dynamic signaling protocols such as LDP, RSVP-TE, MP-BGP, etc

D. 16-1023 is a label control shared by static LSPs and static CR-LSPs

What are the problems with manually creating static VXLAN tunnels in campus networks? Multi-select

A. Although the static VXLAN tunnel mode can support distributed gateway application scenarios, the configuration workload is large and the configuration adjustment is complex

B. N devices to establish static VXLAN tunnels, you need to manually configure up to N(N-1)/2 tunnels, the amount of configuration is large

C. VTEP can only learn remote MAC addresses in a way that relies on data flooding

D. Static VLAN tunnel also uses related protocols on the control plane, which will cause equipment resource loss

To build a loopless Layer 2 network, which of the following schemes is optimal?( Single Choice)

A. Stacking + Link Aggregation

B. TRILL+MSTP

C. ??+MSTP

D. Link Collection + MSTP

As shown in the figure, in the context of IPv4 and IPv6, the SEL field in the NET address of isis always takes a value of 00 ?

A. Right

B. Wrong