Juniper JN0-643 Online Practice Questions and Exam Preparation

Juniper JN0-643 Online Questions & Answers

• Question 221:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button.

  Referring to the exhibit, you want router A to have an EBGP peering with router C. They are both connected through router B, which does not have BGP running, and has static routes configured.

  What must be configured in the EBGP peer groups on routers A and C to make this connection possible?

  A. MED
  B. multihop
  C. multipath
  D. next-hop
  B. multihop

• Question 222:

  -- Exhibit -[edit protocols ospf]

  user@R2# show

  area 0.0.0.6 {

  nssa {

  default-lsa default-metric 10;

  area-range 184.23.12.0/24;

  }

  interface ge-1/1/4;

  }

  [edit protocols ospf]

  user@R2# show ospf database

  OSPF database, Area 0.0.0.0

  Type ID Adv Rtr Seq Age Opt Cksum Len

  Router *192.168.0.2 192.168.0.2 0x80000004 749 0x22 0x87c2 60 Router 192.168.0.3 192.168.0.3 0x80000004 399 0x22 0x94b5 60 Summary *10.0.0.0 192.168.0.2 0x80000003 19 0x22 0xe2e4 28 Summary *192.168.0.1 192.168.0.2

  0x80000002 1100 0x22 0xbda7 28

  OSPF database, Area 0.0.0.6

  Type ID Adv Rtr Seq Age Opt Cksum Len

  Router 192.168.0.1 192.168.0.1 0x80000004 404 0x20 0x76db 60 Router *192.168.0.2 192.168.0.2 0x80000003 1802 0x20 0x319b 48 Summary *11.0.0.0 192.168.0.2 0x80000002 2504 0x20 0xf5d3 28 Summary *192.168.0.2 192.168.0.2

  0x80000003 2153 0x20 0xc5a0 28 Summary *192.168.0.3 192.168.0.2 0x80000002 398 0x20 0xc79d 28 NSSA *0.0.0.0 192.168.0.2 0x80000001 11 0x20 0xcbf1 36 NSSA 184.23.12.0 192.168.0.1 0x80000002 447 0x28 0xb93f 36 OSPF AS

  SCOPE link state database Type ID Adv Rtr Seq Age Opt Cksum Len

  Extern *184.23.12.0 192.168.0.2 0x80000003 11 0x22 0x28d6 36 -- Exhibit -

  Click the Exhibit button.

  Referring to the exhibit, which two statements are correct? (Choose two.)

  A. R2 injects a Type 3 LSA for 184.23.12.0/24 into the backbone.
  B. R2 is an ABR.
  C. R2 injects a Type 5 LSA for 184.23.12.0/24 into the backbone.
  D. R2 is an ASBR.
  B. R2 is an ABR.
  C. R2 injects a Type 5 LSA for 184.23.12.0/24 into the backbone.

• Question 223:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button. In the exhibit, the routers in the network have a default PIM sparse mode configuration. R2 shows that R1 is the RPF next hop for the source, and R3 is the RPF next hop for the RP. Host1 is currently receiving multicast traffic for group

  231.1.1.1. Host2 has come online and is attempting to join group 232.1.1.1. R2 has just received an IGMP message with the source and group addresses. Which step happens next so that Host2 can join the multicast group?

  A. R2 sends a PIM join upstream towards R3 to join the shared tree.
  B. R2 sends a PIM join upstream towards R3 to join the source tree.
  C. R2 sends a PIM join upstream towards R1 to join the shared tree.
  D. R2 sends a PIM join upstream towards R1 to join the source tree.
  D. R2 sends a PIM join upstream towards R1 to join the source tree.

• Question 224:

  What is the purpose of realms in OSPFv3?

  A. They pass IPv6 routes through IPv4
  B. They pass IPv6 routes through VPNs
  C. They pass IPv4 routes through IPv6
  D. They pass VPN through IPv6
  C. They pass IPv4 routes through IPv6

• Question 225:

  -- Exhibit -[edit]

  user@router# run show ospf database external lsa-id 71.23.48.0 extensive OSPF AS SCOPE link state database

  Type ID Adv Rtr Seq Age Opt Cksum Len

  Extern 71.23.48.0 67.176.255.5 0x80000001 114 0x22 0x171b 36 mask 255.255.248.0 Topology default (ID 0)

  TypE. 2, MetriC. 0, Fwd addr: 0.0.0.0, TaG. 0.0.0.0 Aging timer 00:58:06 Installed 00:01:53 ago, expires in 00:58:06, sent 00:01:53 ago Last changed 00:01:53 ago, Change count:

  Extern 71.23.48.0 67.176.255.7 0x8000005a 487 0x22 0x587e 36 mask 255.255.248.0 Topology default (ID 0)

  TypE. 2, MetriC. 0, Fwd addr: 0.0.0.0, TaG. 0.0.0.0 Aging timer 00:51:52 Installed 00:08:01 ago, expires in 00:51:53, sent 00:07:59 ago Last changed 2d 19:33:58 ago, Change count: 1

  Extern 71.23.48.0 67.176.255.8 0x8000005c 540 0x22 0xf73e 36 mask 255.255.248.0 Topology default (ID 0)

  TypE. 1, MetriC. 30, Fwd addr: 0.0.0.0, TaG. 0.0.0.0 Aging timer 00:51:00 Installed 00:08:59 ago, expires in 00:51:00, sent 00:08:59 ago Last changed 00:08:59 ago, Change count:

  -- Exhibit -

  Click the Exhibit button.

  As shown in the exhibit, a router is receiving three external LSAs for the prefix 71.23.48.0.

  Which path is preferred?

  A. The path through 67.176.255.5 is preferred.
  B. The path through 67.176.255.7 is preferred.
  C. The path through 67.176.255.8 is preferred.
  D. The paths through 67.176.255.7 and 67.176.255.8 become active to allow load-balancing.
  C. The path through 67.176.255.8 is preferred.

• Question 226:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button.

  Referring to the exhibit, which two statements are correct? (Choose two.)

  A. Traffic destined for R2 will be blackholed.
  B. Transit traffic will follow the R1-R2-R4 path.
  C. Traffic destined for R2 will reach R2.
  D. Transit traffic will follow the R1-R3-R4 path.
  C. Traffic destined for R2 will reach R2.
  D. Transit traffic will follow the R1-R3-R4 path.

• Question 227:

  Which statement is true about MVRP?

  A. It allows you to split a broadcast domain into multiple isolated broadcast subdomains.
  B. It dynamically manages VLAN registration in a LAN.
  C. It maps multiple independent spanning-tree instances onto one physical topology.
  D. It is a Layer 2 protocol that facilitates network and neighbor discovery.
  A. It allows you to split a broadcast domain into multiple isolated broadcast subdomains.

• Question 228:

  Which two statements about MVRP on EX Series switches are true? (Choose two.)

  A. MVRP can add VLANs on access interfaces.
  B. MVRP can add VLANs on trunk interfaces.
  C. MVRP adds VLANs on MVRP-enabled interfaces by default.
  D. MVRP is in transparent mode on MVRP-enabled interfaces by default.
  B. MVRP can add VLANs on trunk interfaces.
  C. MVRP adds VLANs on MVRP-enabled interfaces by default.

• Question 229:

  Referring to the exhibit, what must you add to the configuration to allow a receiver connected two interface ge 0/0/6 to subscribe to group 232 0 0 1 from source 172.16.7.1?

  

  A. Add sparse mode to PIM interface ge 0/0/6
  B. Add version 2 the state RP configuration
  C. Add version 3 to IGMP INTERFACE ge 0/0/6
  D. Add version two to IGMP interface ge 0/0/6
  C. Add version 3 to IGMP INTERFACE ge 0/0/6

• Question 230:

  A user complains about connectivity problems from their IP address (10.1.1.87) to a server (10.65.1.100). Which Junos command can help verify connectivity in the network? (Choose Two)

  A. mroute
  B. traceoptions
  C. ping
  D. clear bgp neighbor
  B. traceoptions
  C. ping