Juniper Juniper Certifications JN0-343 Questions & Answers

• Question 111:

  -- Exhibit ?

  

  -- Exhibit -

  The exhibit shows three switches interconnected using the default RSTP settings.

  What is the role of Port A?

  A. designated

  B. root

  C. alternate

  D. blocking

  Correct Answer: B

• Question 112:

  Prefix 172.28.102.0/24 has been advertised by BGP peer 172.18.1.1. You must verify that it has been received by your Junos device before a policy has been applied.

  Which command would you use?

  A. show route advertising-protocol bgp 172.18.1.1

  B. show route receive-protocol bgp 172.18.1.1

  C. show route protocol bgp 172.28.102.0/24

  D. show route summary

  Correct Answer: B

• Question 113:

  Which protocol prevents loops and calculates the best path through a switched network that contains redundant paths?

  A. VRRP

  B. STP

  C. DHCP

  D. IS-IS

  Correct Answer: B

• Question 114:

  What are two methods reducing the size of an OSPF link-state database? (Choose two.)

  A. Use identical link metrics where possible.

  B. Use stub areas where possible.

  C. Use unique router IDs where possible.

  D. Use point-to-point interface types where possible.

  Correct Answer: BD

• Question 115:

  Your network has multiple BGP connections to your ISP's edge router. You are asked to influence which router is used by traffic entering your network without asking the ISP to make changes in their network. Which attribute should be used?

  A. local preference

  B. origin

  C. community

  D. aggregator

  Correct Answer: B

• Question 116:

  -- Exhibit -{master:0} user@switch> show spanning-tree interface Spanning tree interface parameters for instance 0 Interface Port ID Designated Designated Port State Role port ID bridge ID Cost ge-0/0/1.0 142:519 142:519 0.002688027490 10000 BLK ALT (Root-Incon) ge-0/0/2.0 142:520 142:520 4128.0019e2516580 10000 FWD DESG ge-0/0/3.0 142:521 142:521 4128.0019e2516580 10000 FWD DESG -- Exhibit -Referring to the exhibit, which statement is correct about the ge-0/0/1 interface?

  A. It has transitioned to the loop-inconsistent state.

  B. It is root protected and has received a superior BPDU.

  C. It has transitioned to a blocking state due to BPDU protection.

  D. It is normally in blocking mode.

  Correct Answer: B

• Question 117:

  What information is included in the DHCP snooping database? (Choose two.)

  A. VLAN

  B. DHCP server address

  C. DHCP options

  D. client MAC address

  Correct Answer: AD

• Question 118:

  Your Junos device runs OSPF and BGP. You must limit the number of BGP prefixes within the 10.0.0.0/8 address block to be redistributed into OSPF. Which parameter would help to control this potential problem?

  A. overload, applied within the OSPF configuration

  B. area-range 10.0.0.0/8 restrict, applied within the OSPF configuration

  C. prefix-export-limit, applied within the OSPF configuration

  D. prefix-limit, applied within the BGP configuration

  Correct Answer: C

• Question 119:

  Switch-1 in the exhibit receives a packet from User A with a destination MAC address of

  00.26.88.02.74.47.

  Which statement is correct in this scenario?

  

  A. Switch-1 floods the packet out ge-0/0/7 and ge-0/0/8.

  B. Switch-1 floods the packet out ge-0/0/6, ge-0/0/7, ge-0/0/8 and ge-0/0/9.

  C. Switch-1 sends the packet out ge-0/0/7 only.

  D. Switch-1 floods the packet out ge-0/0/7, ge-0/0/8 and ge-0/0/9.

  Correct Answer: C

• Question 120:

  Router-1 and Router-2 need to connect through the Internet using a tunneling technology. Hosts that are connected to Router-1 and Router-2 will be sending traffic up to 1500 bytes. The maximum segment size that is supported across the path is 1520 bytes.

  Which tunneling technology will allow this communication to take place?

  A. IPsec VPN tunnel mode

  B. IPsec VPN transport mode

  C. IP-IP tunnel

  D. GRE tunnel

  Correct Answer: C