Juniper Juniper Certifications JN0-343 Questions & Answers

• Question 441:

  

  As shown in the exhibit, you recently installed four EX Series switches in your network. These switches are using the default RSTP configuration. Which two statements are correct? (Choose two.)

  A. Switch-4 selects ge-0/0/10.0 as its root port.

  B. Switch-4 selects ge-0/0/9.0 as its root port.

  C. Switch-4's root cost path is 4000.

  D. Switch-4's root cost path is 40000.

  Correct Answer: BD

• Question 442:

  Which status for VRRP routers is NOT valid?

  A. master

  B. backup

  C. transition

  D. preempt

  Correct Answer: D

• Question 443:

  Which two statements are true regarding the default VLAN in EX Series switches?

  (Choose two.)

  A. All switch ports not specifically assigned to a user-defined VLAN belong to the default VLAN.

  B. An administrator can change the VLAN ID of the default VLAN.

  C. An interface that is part of the default VLAN cannot carry tagged traffic.

  D. The show interface-command shows an asterisk (*) after the interface name if the interface is part of default VLAN.

  Correct Answer: AB

• Question 444:

  Which two statements about GRE tunnels are true? (Choose two.)

  A. GRE can be used to tunnel non-IP protocols, such as IPX.

  B. GRE can provide encrypted communication.

  C. GRE adds overhead of 16 bytes per packet.

  D. GRE can be used to tunnel IPv6 traffic.

  Correct Answer: AD

• Question 445:

  

  As shown in the exhibit, Switch-3 receives a superior BPDU from Switch-2 over the ge- 0/0/10.0 interface. Which two statements are correct? (Choose two.)

  A. Switch-2's ge-0/0/10.0 port assumes the backup role and blocking state.

  B. Switch-3's ge-0/0/10.0 port assumes the designated role and forwarding state.

  C. Switch-2's ge-0/0/10.0 port assumes the designated role and forwarding state.

  D. Switch-3's ge-0/0/10.0 port assumes the alternate role and blocking state.

  Correct Answer: CD

• Question 446:

  You have altered the factory-default storm control configuration so that interfaces on which the storm control level is exceeded are temporarily shut down for five minutes. Which two methods can you use to monitor that the auto recovery feature is working? (Choose two.)

  A. Issue the monitor traffic violations command.

  B. Issue the monitor start messages command.

  C. Issue the show storm-control violations command.

  D. Issue the show ethernet-switching interfaces command.

  Correct Answer: BD

• Question 447:

  Which two statements are true about NSR? (Choose two.)

  A. Graceful Routing Engine switchover must be configured for NSR to function properly.

  B. NSR and graceful restart can be enabled at the same time.

  C. NSR relies on helper support on neighboring routers.

  D. When NSR is enabled, RPD runs on the backup Routing Engine.

  Correct Answer: AD

• Question 448:

  In the Junos OS, which attribute is used before the AS path in the BGP selection algorithm?

  A. highest local preference

  B. lowest local preference

  C. lowest MED

  D. weight

  Correct Answer: A

• Question 449:

  Which configuration provides dynamic ARP inspection on access port ge-0/0/0?

  A. secure-access-port { interface ge-0/0/0.0 { dhcp-trusted; } vlan vlan10 { arp-inspection; examine-dhcp; } }

  B. secure-access-port { interface ge-0/0/0.0 { dhcp-trusted; } vlan vlan10 { dynamic-arp-inspection; } }

  C. secure-access-port { interface ge-0/0/0.0 { no-dhcp-trusted; } vlan vlan10 { dynamic-arp-inspection; examine-dhcp; } }

  D. secure-access-port { interface ge-0/0/0.0 { static-ip 255.255.255.255 } vlan vlan10 { arp-inspection; } }

  Correct Answer: A

• Question 450:

  Which two configurations are valid methods for associating a VLAN with an interface on EX Series switches? (Choose two.)

  A. {master:0}[edit interfaces] user@ex# show ge-0/0/4 { unit 0 { family ethernet-switching { vlan { members v100; } } } }

  B. {master:0}[edit interfaces ge-0/0/4] user@ex# show unit 0 { family ethernet-switching { vlan v100; } }

  C. {master:0}[edit interfaces ge-0/0/4] user@ex# show vlan-tagging; unit 0 { family ethernet-switching { vlan v100; } }

  D. {master:0}[edit vlans] user@ex# show v100 { vlan-id 100; interface { ge-0/0/4.0; } }

  Correct Answer: AD