Juniper Juniper Certifications JN0-660 Questions & Answers

• Question 241:

  Click the Exhibit button.

  

  Referring to the exhibit, you want to save CPU processing load on the PE3 router by preventing the reception of routes belonging to Customer B. Which Layer 3 VPN scaling mechanism provides this functionality?

  A. route origin

  B. route refresh

  C. route reflection

  D. route target filtering

  Correct Answer: D

• Question 242:

  Click the Exhibit button.

  

  The output in the exhibit was captured on an interface. Which three statements are true about the configuration on the router with hostname SaoPaulo? (Choose three.)

  A. Wide metrics is not in use.

  B. The router has the overload bit set to "on".

  C. Authentication is enabled.

  D. System ID is 1921.6805.2001.

  E. Level 2 routing is enabled.

  Correct Answer: ACE

• Question 243:

  Click the Exhibit button.

  

  Traffic is flowing through the interfaces in the exhibit as follows:

  On ge-0/0/2.0, IPv4 traffic has a throughput rate of 4 Mbps, and the burst size counter is at 200 KB. On ge-0/0/2.0, IPv6 traffic has a throughput rate of 7 Mbps, and the burst size counter is at 550 KB. On ge-0/0/3.0, IPv4 traffic has a throughput rate of 5 Mbps, and the burst size counter is at 250 KB. On ge-0/0/3.1, IPv6 traffic has a throughput rate of 12 Mbps, and the burst size counter is at 450 KB.

  Which statement describes what is happening?

  A. IPv6 traffic on ge-0/0.3.1 is being dropped; all other traffic is unaffected.

  B. IPv4 traffic on ge-0/0/2.0 is unaffected; IPv6 traffic on ge-0/0/2.0 is being dropped; IPv4 traffic on ge0/0/3.0 is unaffected; IPv6 traffic on ge-0/0/3.1 is being dropped.

  C. IPv4 traffic on ge-0/0/2.0 is being dropped; IPv6 traffic on ge-0/0/2.0 is being dropped; IPv4 traffic on ge-0/0/3.0 is unaffected; IPv6 traffic on ge-0/0/3.1 is unaffected.

  D. All IPv4 and IPv6 traffic on ge-0/0/2 and ge-0/0/3 is being dropped.

  Correct Answer: B

• Question 244:

  Which statement is true about ASM and/ or SSM multicast?

  A. ASM requires an external mechanism to find the source.

  B. SSM only builds RPT trees, since the RP is replaced by an external mechanism.

  C. ASM and SSM for IPv6 multicast use embedded RP.

  D. SSM does not require MSDP.

  Correct Answer: D

• Question 245:

  Click the Exhibit button.

  

  What would happen if the guaranteed-rate command is removed from the configuration shown in the exhibit?

  A. The logical interface gets a minimal bandwidth reservation.

  B. The minimum-rate command should be configured instead.

  C. The logical interface receives no bandwidth constraints.

  D. The transmit-rate command should be configured instead.

  Correct Answer: A

• Question 246:

  Click the Exhibit button.

  

  CE1, CE2, and CE3 are part of a single VPLS VPN. R1, R2, and R3 are PEs in the provider network, and have just been powered on. The VPLS domain has converged, and frames have passed between all CEs in the last minute. An Ethernet frame has just arrived at R3 from CE3. It has a source MAC address of CE3 and a destination MAC address of CE1.What does R3 do with the Ethernet frame?

  A. Drops the packet as the destination MAC address is not for R3.

  B. Drops the packet as the destination MAC address is not in R3's MAC table.

  C. Forwards the packet to R1 only.

  D. Forwards the packet to R1 and R2.

  Correct Answer: C

• Question 247:

  Click the Exhibit button.

  

  Based on the output shown in the exhibit, which statement is correct?

  A. R3 is the designated intermediate system.

  B. R3 is the backup designated intermediate system.

  C. R3 has been configured with an export policy and is announcing external routes to IS-IS neighbors.

  D. R3 is using both IPv4 and IPv6 resulting in two pseudonodes.

  Correct Answer: A

• Question 248:

  You have been asked to make a configuration which inherits the statements in a predefined configuration group. What will accomplish this?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: B

• Question 249:

  Click the Exhibit button.

  

  The exhibit contains a BGP topology. R1 and R2 are peering using IBGP. R2 and R3 are peering with EBGP. R1 is not installing any routes from R3 due to next-hop resolution issues. Which two configurations will resolve this issue? (Choose two.)

  A. Use a policy to advertise the loopback on R2 into the IGP.

  B. Advertise the R2-R3 subnet into the IGP.

  C. Configure advertise-inactive on the IBGP peering session on R2.

  D. Configure next-hop self on the IBGP peering session on R2.

  Correct Answer: BD

• Question 250:

  IS-IS is configured to support both IPv4 and IPv6 routing. Which statement is true?

  A. Separate IPv4 and IPv6 hellos will be sent.

  B. IPv6 will have a separate link-state database.

  C. IS-IS v6 support must be enabled under protocols isis.

  D. IS-IS sends IPv6 topology information as new TLVs in existing LSPs.

  Correct Answer: D