Which of the following sequences can be matched by the regular expression [^100|200]$?

• A. 300200 100
• B. 100,300,200
• C. 100 200 300
• D. 200 100 300

The following statements about the VRRP protocol are correct (multiple choice).

• A. VRRPv2 only applies to IPv4 networks, and VRRPv3 only applies to IPv6 networks
• B. VRRPv3 does not support authentication, while VRRPV2 does
• C. The owner of the Master IP address has a VRP priority of 255, and all configurable priorities range from 0 to 254
• D. Both VRRPv2 and VRRPv3 support authentication

In order for routers at both ends of the IPv6 over lPv4 manual tunnel to exchange routing information, OSPV3 can be enabled on the tunnel, osPFv3 will be able to form a normal neighbor relationship, and the tunnel interface will be treated as a P2P link interface.

• A. TRUE
• B. FALSE

NSF (Non-StoppingForwarding) and non-stop circuits are transmitted NSR (Non-Stopping Routing) are two highly reliable solutions, and the following statement is correct

• A. After NSR enablement, if the business batch backup has not yet ended, a master board failure occurs, the NSR cannot be completed
• B. NSF routers do not need to negotiate the ability to support NSF through specific messages
• C. NSR backers require the ability to support NSR through specific message negotiation
• D. After NSF is enabled, the router is switched back, and the routing table and forwarding table remain unchanged, so traffic is not lost during grf time

An existing router running BGP, HW1, has both IBGP neighbors and EBGP neighbors configured on the router.
Are the IP Neighbors and EBGP Neighbors described below correctly?

• A. The router sends BGP updates learned from its EBGP neighbors to its other IBGP neighbors and EBGP neighbors
• B. IBGP neighbors can establish neighbor relationships through Loopback engagements
• C. EBGP neighbors must be directly connected, otherwise, EBGP-Multi-hop must configure
• D. The router will be connected directly from its EBGP IBGP neighbor, otherwise, IBGP-Multi-hop must be configured
• E. The router sends BGP updates learned from its IBGP neighbors to its other IBGP neighbors and EPGP neighbors