Juniper JN0-643 Online Practice Questions and Exam Preparation

Juniper JN0-643 Online Questions & Answers

• Question 61:

  A network routes IPv4 traffic only. You want to add IPv6 to the network, but you must use a single IGP for both IPv4 and IPv6 traffic. Which protocol meets this requirement?

  A. OSPFv2
  B. BGPv4
  C. ES-ISv1
  D. OSPFv3
  D. OSPFv3

• Question 62:

  You notice that an interface receiving traffic from multiple devices with no user-configured CoS parameters has been assigned the ieee802.1p-default classifier. What is the port type assigned to this interface?

  A. access port
  B. tagged access port
  C. trunk port
  D. designated port
  C. trunk port

• Question 63:

  Which CoS component helps with TCP global synchronization problems?

  A. WRR with rewrite rules
  B. WRED with drop profiles
  C. tail drop profiles with a behavior aggregate classifier
  D. exact term with a scheduler
  B. WRED with drop profiles

• Question 64:

  -- Exhibit -

  Mar 16 17:48:06.145257 OSPF periodic xmit from 172.14.10.1 to 224.0.0.5 (IFL 69 area 0.0.0.1) Mar 16 17:48:12.404986 ospf_trigger_build_telink_lsas : No peer found Mar 16 17:48:13.013420 ospf_trigger_build_telink_lsas : No peer found Mar 16 17:48:13.013555 ospf_set_lsdb_statE. Router LSA 192.168.2.1 adv-rtr 192.168.2.1 state QUIET>GEN_PENDING Mar 16 17:48:13.013661 OSPF trigger router LSA 0x156d0f0 build for area 0.0.0.1 lsa-id 192.168.2.1 Mar 16 17:48:13.017494 ospf_set_lsdb_statE. Router LSA 192.168.2.1 adv-rtr 192.168.2.1 state GEN_PENDING->QUIET Mar 16 17:48:13.017636 OSPF built router LSA, area 0.0.0.1, link count 2 Mar 16 17:48:13.017954 OSPF sent Hello 172.14.10.1 -> 224.0.0.5 (ge-0/0/1.0 IFL 69 area 0.0.0.1) Mar 16 17:48:13.018023 Version 2, length 44, ID 192.168.2.1, area 0.0.0.1 Mar 16 17:48:13.018111 mask 255.255.255.0, hello_ivl 10, opts 0x2, prio 128 Mar 16 17:48:13.018162 dead_ivl 40, DR 172.14.10.1, BDR 0.0.0.0 Mar 16 17:48:13.018613 OSPF DR is 192.168.2.1, BDR is 0.0.0.0 Mar 16 17:48:13.018900 OSPF sent Hello 172.14.10.1 -> 224.0.0.5 (ge-0/0/1.0 IFL 69 area 0.0.0.1) Mar 16 17:48:13.018968 Version 2, length 44, ID 192.168.2.1, area 0.0.0.1 Mar 16 17:48:13.019032 mask 255.255.255.0, hello_ivl 10, opts 0x2, prio 128 Mar 16 17:48:13.019118 dead_ivl 40, DR 172.14.10.1, BDR 0.0.0.0 Mar 16 17:48:13.028426 OSPF DR is 192.168.2.1, BDR is 0.0.0.0 Mar 16 17:48:13.432025 OSPF packet ignoreD. area mismatch (0.0.0.0) from 172.14.10.2 on intf ge0/0/1.0 area 0.0.0.1 Mar 16 17:48:13.432135 OSPF rcvd Hello 172.14.10.2 -> 224.0.0.5 (ge-0/0/1.0 IFL 69 area 0.0.0.1) Mar 16 17:48:13.432189 Version 2, length 44, ID 192.168.5.1, area 0.0.0.0 Mar 16 17:48:13.432274 checksum 0x8065, authtype 0 Mar 16 17:48:13.432346 mask 255.255.255.0, hello_ivl 10, opts 0x2, prio 128 Mar 16 17:48:13.432398 dead_ivl 40, DR 172.14.10.2, BDR 0.0.0.0 commit complete -- Exhibit -

  Click the Exhibit button.

  Looking at the traceoptions output in the exhibit, why are the OSPF routers stuck in Init state?

  A. There is an MTU mismatch.
  B. There is a network mask mismatch.
  C. The routers are in different areas.
  D. No BDR has been elected.
  C. The routers are in different areas.

• Question 65:

  Which two statements are true?

  A. The local router initiated the BGP session for the 192 168 1 peer.
  B. The 192 168 2 1 peer initiated the BGP session with the local router.
  C. The 192 168 6 1 peer initiated the BGP session with the local router.
  D. The local router initiated the BGP session for the 192 168 2 1 pegP.
  C. The 192 168 6 1 peer initiated the BGP session with the local router.
  D. The local router initiated the BGP session for the 192 168 2 1 pegP.

• Question 66:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button.

  Which statement is true about the IPv6 network shown in the exhibit?

  A. OSPFv2 must be configured to route IPv4 prefixes.
  B. Areas 1 and 2 cannot be a stub or NSSA.
  C. OSPFv3 can use MD5 authentication.
  D. OSPFv3 can route IPv4 prefixes.
  D. OSPFv3 can route IPv4 prefixes.

• Question 67:

  You have been asked to implement a private VLAN with two community VLANs. This private VLAN must span multiple switches in your Layer 2 network. Which two statements about this deployment are true? (Choose two.)

  A. All isolated ports must be configured as trunk ports.
  B. A minimum of one promiscuous trunk port is required.
  C. Both community VLANs must have assigned VLAN IDs.
  D. A minimum of one private VLAN trunk port is required.
  C. Both community VLANs must have assigned VLAN IDs.
  D. A minimum of one private VLAN trunk port is required.

• Question 68:

  -- Exhibit -- Exhibit -

  

  Click the Exhibit button.

  Referring to the exhibit, R2 is sending a route to R1 with a community value.

  Which statement is correct?

  A. Routes will be accepted without change in the attributes.
  B. All routes will be rejected.
  C. Routes will be accepted with the community value removed.
  D. Routes will be rejected with the community value removed.
  C. Routes will be accepted with the community value removed.

• Question 69:

  Which two statements about the voice VLAN feature are correct? (Choose two.)

  A. It can be used to separate untagged data and VLAN tagged VoIP traffic into different VLANs on an access port.
  B. It can be used to assign VoIP traffic into a CoS forwarding class.
  C. It can be used to separate untagged data and VLAN tagged VoIP traffic into different VLANs on a trunk port.
  D. It can be used to apply a policer to VoIP traffic.
  A. It can be used to separate untagged data and VLAN tagged VoIP traffic into different VLANs on an access port.
  B. It can be used to assign VoIP traffic into a CoS forwarding class.

• Question 70:

  When configuring class of service, what would you use to allocate bandwidth to a forwarding class?

  A. buffer depth
  B. transmit rate
  C. bandwidth
  D. speed
  B. transmit rate