Juniper Juniper Certifications JN0-347 Questions & Answers

• Question 81:

  Click the Exhibit button.

  

  Referring to the exhibit, which three statements are true? (Choose three.)

  A. Interface ge-0/0/1 is an access port.

  B. There are no active ports in the default VLAN.

  C. The switch cannot be managed through the production network.

  D. Frames on interface ge-0/0/2 can be tagged with VLAN ID 101 or VLAN 1.

  E. Frames on interface ge-0/0/0 can be tagged with VLAN ID 101.

  Correct Answer: ACE

• Question 82:

  What is the default BGP group type on a Junos device?

  A. internal

  B. external

  C. multihop

  D. null

  Correct Answer: B

• Question 83:

  Click the Exhibit button. You are notified that clients connected to your EX Series switch are not receiving

  IP addresses from the DHCP server.

  You examine the switch configuration and notice that DHCP snooping has been enabled. In this scenario,

  what would cause the problem?

  

  A. The location information is not being inserted into the DHCP option 82 requests.

  B. The dynamic ARP inspection feature needs to be enabled on the ge-0/0/0 interface.

  C. The DHCP relay setting in the forwarding-options hierarchy has not been configured.

  D. The DHCP server's ge-0/0/0 interface has not been configured as a trusted interface.

  Correct Answer: B

  You can configure DHCP snooping, dynamic ARP inspection (DAI), MAC limiting, persistent MAC learning,

  and MAC move limiting on the access ports of EX Series switches to protect the switches and the Ethernet

  LAN against address spoofing and Layer 2 denial-of-service (DoS) attacks.

  You can also configure a trusted DHCP server and specific (allowed) MAC addresses for the switch

  interfaces. Step-by- Step Procedure Configure basic port security on the switch: Etc.

• Question 84:

  Click the Exhibit button.

  

  You are unable to establish a BGP session between R2 and ISP-B. Referring to the exhibit, what must be changed in the configuration?

  A. A local address statement with the lo0 address must be added to R2 under group external-a;

  B. An import policy statement must be added to R2 under group external-a to allow ISP-B to peer.

  C. The type external statement must be added to R2 under group external-b.

  D. The peer-as statement needs the AS number for ISP-B.

  Correct Answer: D

• Question 85:

  Which two OSPF LSA types will you see in a stub area? (Choose two.)

  A. network (Type 2)

  B. summary (Type 3)

  C. ASBR summary (Type 4)

  D. external (Type 5)

  Correct Answer: AB

• Question 86:

  Which two statements about RSTP are correct? (Choose two.)

  A. RSTP is not backwards compatible with STP.

  B. RSTP is backwards compatible with STP.

  C. RSTP permits multiple root bridges within a Layer 2 domain.

  D. RSTP permits only a single root bridge within a Layer 2 domain.

  Correct Answer: BC

  B: RSTP and STP can co-exist. RSTP achieves its rapid converges over STP through new mechanisms. If a RSTP switch connects to an STP switch, the RSTP switch will drop down to STP convergence speeds on a per-port basis.

  C: Unlike 802.1d (STP), 802.1w (RSTP) uses Hello packets between bridges to maintain link states and does not rely on the root bridge.

• Question 87:

  Click the Exhibit button.

  

  Referring to the exhibit, why is the 0.0.0.0/0 route hidden?

  A. The next hop is set to discard.

  B. You already have an active BGP default route.

  C. You cannot make a 0.0.0.0/0 generated route.

  D. There are no contributing routes.

  Correct Answer: D

• Question 88:

  You are currently defining a new OSPF area; The area must advertise external routes but should not

  receive external routes from another area;

  In this scenario, which type of area should you define?

  A. stub

  B. backbone

  C. not-so-stubby

  D. totally stubby

  Correct Answer: A

• Question 89:

  Which protocol supports tunneling of non-IP traffic?

  A. GRE

  B. SSH

  C. IPsec

  D. IP-IP

  Correct Answer: A

  The GRE protocol (Generic Routing Encapsulation) which is a tunneling protocol that can encapsulate a variety of network layer packet types into a GRE tunnel. GRE therefore can encapsulate multicast traffic, routing protocols (OSPF, EIGRP etc) packets, and other non-IP traffic inside a point-to-point tunnel.

• Question 90:

  Which three link-specific fields must match between OSPF neighbors before they form an adjacency over a broadcast medium? (Choose three.)

  A. dead interval

  B. options

  C. hello interval

  D. neighbor

  E. router priority

  Correct Answer: ACD

  AC: If OSPF HELLO or Dead timer interval values are mismatched, then adjacency cannot be achieved. D: In a successful formation of OSPF adjacency, OSPF neighbors will attain the FULL neighbor state.