JN0-343 Online Practice Questions and Answers

What is the default OSPF designated router (DR) priority?

A. 0

B. 64

C. 128

D. 255

When two OSPF routers on a broadcast network are ready to exchange database descriptor packets, which router is responsible for setting the initial sequence number?

A. the DR

B. the BDR

C. the router with the higher RID

D. the router with the lower RID

On Switch-1, all configured interfaces belong to the default VLAN. Based on the topology and bridge table shown in the exhibit, which two operations will Switch-1 perform if it receives a frame sent by User A with a destination MAC address of 00:26:88:02:74:89? (Choose two.)

A. Switch-1 will flood the frame out all switch ports that belong to the default VLAN.

B. Switch-1 will flood the frame out all switch ports except ge-0/0/6.0.

C. Switch-1 will forward the frame out ge-0/0/9.0.

D. Switch-1 will update its bridge table with a new MAC entry for the device associated with User

Layer 2 interfaces can be assigned to operate in which two modes? (Choose two.)

A. route

B. access

C. trunk

D. distribution

Which statement describes the operation of a stub area?

A. A stub area receives only a default route.

B. A stub area receives all routes from all other areas.

C. A stub area receives no external routes from other areas.

D. A stub area is automatically configured based on the presence of the E-bit in the hello messages sent from the ABR.

Which feature allows you to drop unknown unicast traffic when exceeding a specified level?

A. MAC limiting

B. IP source guard

C. storm control

D. broadcast control

A network administrator has just received a new EX Series switch to replace a router and Layer 2 switch. The network administrator has configured all of the Layer 2 parameters, however users are reporting that they can only reach devices within their own VLAN.

What would solve the problem?

A. The network administrator must configure inter-VLAN routing.

B. The network administrator must administratively enable the VLAN.

C. The network administrator needs to clear the ARP table.

D. The network administrator needs to clear the bridge table.

An IP tunnel connects two routers over the Internet as shown in the exhibit.

Which two statements are correct? (Choose two.)

A. A tunnel interface can serve as a next hop for static routes or participate in the network's IGP.

B. Routing protocols will always prefer a tunnel over a physical link because the tunnel is a one-hop link with the lowest cost path.

C. You can ensure the IP tunnel serves as the backup path through administrative settings such as cost and route preference.

D. IP tunnels are subject to the same simple firewall rules as the direct link between the two routers, because the original IP header contents are open for the transit devices to see.

Referring to exhibit, which configuration change is need for an IS-IS Level 1 adjacency between

R1 and R2?

user@R1# show interfaces lo0

unit 0 {

family inet {

address 10.42.0.1/32;

}

family iso {

address 49.0002.0010.0042.0001.00;

}

}

user@R1# show protocols isis

interface ge-0/0/1.0 {

level 2 disable;

}

interface 1o0.0;

user@R2# show interfaces lo0

unit 0 {

family inet {

address 10.42.0.2/32;

}

family iso {

address 49.0001.0010.0042.0002.00;

}

}

user@R2# top shows protocols isis

interface ge-0/0/1.0;

interface lo0;

A. Enable Level 2 on R1's ge-0/0/1 interface.

B. Disable Level 2 on R2's ge-0/0/1 interface.

C. Configure the lo0 family ISO address 49.0002.0010.0042.0002.00 on R2.

D. Configure the lo0 family ISO address 49.0002.0010.0042.0002.00 on R1.

You are asked to inspect your EX Series switch for MAC limit violations.

Which two CLI commands would you use? (Choose two.)

A. show ethernet-switching mac-notification

B. show ethernet-switching interfaces

C. show log messages | match "mac limit"

D. show ethernet-switching mac-learning-log