Protocols with TCP ports 443, 179, 137, 110, and 23 are, in order: radio

A. Finger,DHCP Server,NetBios Name Server,POP3,TelnetB

B. LDAP,SNMP,TFTP,POP3,Telnet

C. HTTPS,SNMP,POP3,DNS ,Telnet

D. HiPS,BGP, NetBios Name Server ,POP3,TelnetE. BGP,POP3,SNMP,TFTP,Teinet

If you run PIM-SM in a multicast network, you need to build a multicast forwarding tree between the multicast source and the receiver to enable the receiver to receive the multicast effect, so what are the following options for the correct tree sketch for the build?

A. What is built between the multicast source and the RP is the SPT tree

B. RP and the receiver is built between the RPT tree

C. Built between the RPT tree

D. RP and the swap is the SPT tree

When deploying BGP/MPLS IPVPN, OSPF's VPN route tag is not present.

The extended properties of MP-BGP are passed only locally, only locally, and only meaningful on routers that receive MP-BGP routes and generate OSPF LSAs.

A. TRUE

B. FALSE

What are the reasons why the BGP connection is down after it is successfully established ? ( Single choice questions) Single choice

A. The wrong BGP packet was received.

B. The mandatory attribute in the route update packet is missing.

C. Open message negotiation failed.

D. After the BGP connection is established, the keepalive message is not received within the negotiated holdtime time.

Regarding the MPLS handling mode of TTL, the following description is correct?

A. Pipe mode. When an IP message passes through an MPLS network, the IPTTL minus l at the entry point is mapped to the MPLS TTL field

B. MPLS tags in the TTL, which mean the same as the TTL domain in the IP header. TTL prevents mpLS networks from creating routing loops

C. In Unifor mode, when an IP message passes through an MPLS network, the inbound IPTTL is minus 1. The MPLSTTL field is a fixed value

D. In MMLSVPI, if you need to hide the structure of the MPLS backbone network, you can use the Uniform mode on Ingress for private network messages