Juniper Juniper Certifications JN0-343 Questions & Answers

• Question 241:

  

  Referring to the exhibit, which interfaces will receive a packet sent to MAC address 00:05:85:7F:EB. 80 from the user with IP address 10.10.10.10?

  A. 0/0/3 and 0/0/22

  B. 0/0/9 and 0/0/23

  C. 0/0/3, 0/0/9, 0/0/22, and 0/0/23

  D. 0/0/1, 0/0/3, 0/0/9, 0/0/22, and 0/0/23

  Correct Answer: A

• Question 242:

  What does an ABR between a backbone area and a totally stubby area inject into the totally stubby area?

  A. an LSA Type 4

  B. an LSA Type 5

  C. an external route

  D. a default route

  Correct Answer: D

• Question 243:

  Your network consists of three OSPF routers as shown below:

  R1 -- R2 -- R3

  You run the show ospf neighbor command on R2. The output shows no data in the output for OSPF neighbors.

  Which three actions will troubleshoot the adjacency problem for Router R2? (Choose three.)

  A. Verify the physical and data link layer connectivity on Routers R1, R2, and R3.

  B. Look for incorrect settings for MTU on Routers R1 and R3.

  C. Look for mismatched configurations on Routers R1, R2, and R3 for IP subnet/mask, area number, and area type.

  D. Verify Router R1 and R3 to see if they are stuck in 2-way state.

  E. Look for mismatched configurations on Routers R1, R2, and R3 for authentication, hello/dead interval, and network type.

  Correct Answer: ACE

• Question 244:

  You have an EX Series switch. You want to provide inter-VLAN routing between VLAN A and VLAN B. Which two steps must you perform? (Choose two.)

  A. Assign a VLAN ID to the Layer 3 VLAN interface.

  B. Assign at least one Layer 3 address to each VLAN.

  C. Assign interfaces configured as family Ethernet-switching to VLAN A and VLAN B.

  D. Assign interfaces configured as family inet to VLAN A and VLAN B.

  Correct Answer: BC

• Question 245:

  You must modify the default RSTP port behavior on interface ge-0/0/9 so it can transition states immediately when a host is plugged in. It is on a half-duplex link. Which command meets this requirement?

  A. set protocols rstp interface ge-0/0/9.0 mode edge

  B. set protocols rstp interface ge-0/0/9.0 mode portfast

  C. set protocols rstp interface ge-0/0/9.0 mode point-to-point

  D. set protocols rstp interface ge-0/0/9.0 mode shared

  Correct Answer: C

• Question 246:

  You are running several EX4200 switches in a Virtual Chassis configuration. You want to determine which switch will become the master of the Virtual Chassis after the switches are rebooted. Which three criteria play a role in determining this? (Choose three.)

  A. switch priority

  B. member ID

  C. MAC address

  D. prior master/backup status

  E. serial number

  Correct Answer: ACD

• Question 247:

  -- Exhibit -Router A.

  interfaces {

  ge-0/0/0 {

  unit 0 {

  family inet {

  address 192.168.1.20/24 {

  vrrp-group 27 {

  virtual-address 192.168.1.20;

  priority 255;

  authentication-type simple;

  authentication-key ;

  }

  }

  }

  }

  }

  }

  Router B.

  interfaces {

  ge-4/2/0 {

  unit 0 {

  family inet {

  address 192.168.1.19/24 {

  vrrp-group 27 {

  virtual-address 192.168.1.20;

  priority 200;

  authentication-type simple;

  authentication-key ;

  }

  }

  }

  }

  }

  }

  -- Exhibit -Referring to the exhibit, Router B comes up first and preemption is not enabled. Router A assumes mastership for the virtual IP. Why does Router A assume a mastership role for the IP?

  A. Router A's interface IP address and the virtual IP address match.

  B. Router A is configured with a higher priority.

  C. Router B is configured with a lower priority.

  D. Router B has a lower primary IP address for the interface.

  Correct Answer: A

• Question 248:

  You need additional security and are configuring IP source guard.

  Which three statements accurately describe IP source guard? (Choose three.)

  A. The default setting for access ports using IP source guard is untrusted.

  B. IP source guard does not check packets received on a trunk interface.

  C. You can enable IP source guard on interfaces and VLANs.

  D. Packets with an invalid IP address or MAC address are rejected.

  E. IP source guard checks the IP/MAC address of packets received against entries stored in the DHCP snooping database.

  Correct Answer: ABE

• Question 249:

  -- Exhibit -user@Switch-1# run show dhcp snooping binding DHCP Snooping Information: MAC address IP address Lease (seconds) Type VLAN Interface

  00:26:88:02:74:89 172.28.1.4 - static default ge-0/0/9.0

  00:26:88:02:74:86 172.28.1.2 86113 dynamic default ge-0/0/6.0

  00:26:88:02:74:87

  172.28.1.3 86378 dynamic default ge-0/0/7.0

  -- Exhibit -DHCP snooping is implemented on an EX Series switch. The results display a static MAC to IP binding on interface ge-0/0/9 as shown in the exhibit.

  Which statement is correct?

  A.

  MAC address 00:26:88:02:74:89 is a static MAC address configured for a host attached to interface ge-0/0/9.

  B.

  MAC address 00:26:88:02:74:89 is a static MAC address to IP address binding in the DHCP server.

  C.

  MAC address 00:26:88:02:74:89 is a static MAC address to IP address configured on the L3 interface ge-0/0/9.

  D.

  MAC address 00:26:88:02:74:89 is a static address assigned using the command set interface ge-0/0/9.0 mac-allowed 00:26:88:02:74:89.

  Correct Answer: A

• Question 250:

  Your router has formed two BGP peering relationships and received a route to 64.60.10.0/24 from each peer. The router has verified the next-hop address can be reached for both peers. What is the next step to determine which path is selected for the routing table?

  A. Prefer the lowest origin value.

  B. Prefer the shortest AS-path length.

  C. Prefer the lowest local-preference value.

  D. Prefer the highest local-preference value.

  Correct Answer: D