QUESTION: 257

Router RL runs the OSPF protocol and uses the display ip routing-tabe command to view the router RL's routing table , the following information about OSPF in the routing table is described correctly as ?

In the routing table, the routing table entries identified by the OSPF identifier can only be learned through the 3 types of LSAs to
In the routing table, used The 'OSPF' identifier identifies a route table entry that can only pass a Type 1 LSA
In the routing table, the routing table entries identified with the 'OSPF identifier' can be learned through the 1/2/3/5 LSA to
In the routing table, Route table entries identified with the "O_ASE identifier can only be learned through routing introduction

Answer(s): D

Reveal Solution Next Question

QUESTION: 258

By default, which of the following security MAC address types lose table entries after the device restarts?

Sticty MAC address
Black hole MAC address
Secure static MAC address
Secure dynamic MAC address

Answer(s): D

Reveal Solution Next Question

QUESTION: 259

Regarding the description of the encapsulation format of the labels in MPLS, the correct one is ?

The TTL field in the label has a similar meaning to the TTL (Time To Live) in the IP packet, and also has the effect of preventing loops
The total length of an MPLS single tag is 4 bytes (32 bits).
For Ethernet, PPP packets, the tag stack is like a "cushion layer", located between the layer 2 header and the data, and when there is a VLAN tag, the MPLS header is placed on the Ether head and VLANtag between
label in the S field, lbit Used to identify whether the label is a bottom label, and a value of 1 indicates that it is the penultimate label

Answer(s): A,B

Reveal Solution Next Question