Juniper JN0-348 Online Practice Questions and Exam Preparation

Juniper JN0-348 Online Questions & Answers

• Question 51:

  You are enabling dynamic ARP inspection on an EX4300 switch. Which service is enabled by default in this scenario?

  A. DHCP snooping
  B. persistent MAC learning
  C. MAC limiting
  D. IP Source Guard
  A. DHCP snooping

• Question 52:

  Click the Exhibit button.

  

  Given the route shown in the exhibit, which two prefixes contribute to the aggregate route? (Choose two.)

  A. 172.12.31.0/24
  B. 172.12.33.0/24
  C. 172.12.30.0/24
  D. 172.12.32.0/24
  A. 172.12.31.0/24
  C. 172.12.30.0/24

• Question 53:

  In which two STP states is a port active and a MAC address learned? (Choose two.)

  A. blocking
  B. forwarding
  C. disabled
  D. learning
  B. forwarding
  D. learning

• Question 54:

  You have configured the router with an IS-IS interface metric of 2048. However, the IS-IS interface metric of 63 is being applied for the interface of this router. What must you do to enable the larger metric value?

  A. Enable wide metrics.
  B. Disable narrow metrics.
  C. Restart the IS-IS protocol.
  D. Enable level 1 IS-IS routing.
  A. Enable wide metrics.

• Question 55:

  Click the Exhibit button.

  

  Referring to the exhibit, what is the problem?

  A. The LAG member interfaces are configured across different line cards
  B. LAG requires more than two member links
  C. LACP is required for LAG to work
  D. Aggregated interfaces must be defined under the chassis stanza
  D. Aggregated interfaces must be defined under the chassis stanza

• Question 56:

  Which three mechanisms are associated with the bridging process? (Choose three.)

  A. blocking
  B. flooding
  C. aging
  D. filtering
  E. listening
  B. flooding
  C. aging
  D. filtering

• Question 57:

  What are two advantages of a point-to-point OSPF adjacency? (Choose two.)

  A. Only a DR is elected.
  B. No type 1 LSAs are generated.
  C. No type 2 LSAs are generated.
  D. There is quicker neighbor establishment.
  C. No type 2 LSAs are generated.
  D. There is quicker neighbor establishment.

• Question 58:

  Which two statements are true about high availability on Junos devices? (Choose two.)

  A. BFD is faster at detecting failures than default GRE or OSPF timers.
  B. BFD is slower at detecting failures than default GRE or OSPF timers.
  C. NSR is dependent on helper routers to assist the routing platform in restoring routing protocol information.
  D. NSR is independent on helper routers to assist the routing platform in restoring routing protocol information.
  A. BFD is faster at detecting failures than default GRE or OSPF timers.
  D. NSR is independent on helper routers to assist the routing platform in restoring routing protocol information.

• Question 59:

  Which two requirements must be satisfied before graceful restart will work? (Choose two.)

  A. a stable network topology
  B. a neighbor configured with BFD
  C. a neighbor configured with graceful restart
  D. a neighbor with an uptime greater than an hour
  A. a stable network topology
  C. a neighbor configured with graceful restart

• Question 60:

  You want to configure Layer 2 services over an IP-based tunneling mechanism between two sites. Which configuration statement is required to accomplish this task?

  A. set interfaces gr-0/0/0.0 family bridge
  B. set interfaces ip-0/0/0.0 encapsulation vlan-bridge
  C. set interfaces gr-0/0/0.0 encapsulation vlan-bridge
  D. set interfaces ip-0/0/0.0 family bridge
  A. set interfaces gr-0/0/0.0 family bridge