JN0-660 Exam Questions

Click the Exhibit button. You are asked to configure an OSPF network based on the topology shown in the exhibit. You must keep the link-state database in Area 1 as small as possibl...

You are provisioning a new customer for access to your Layer 3 VPN. The customer is using 172.16.35.0/24 as their internal IP address space, which is also being used by an existing...

Click the Exhibit button. Your IT manager asks you to describe a benefit of migrating from LDP VPLS towards BGP VPLS considering the operational network shown in the exhibit. What...

Click the Exhibit button. In the exhibit, your Layer 3 VPN uses BGP to send and receive routes from customers. Customer A reports that remote routes are not being received on CE2.W...

Click the Exhibit button. Based on the configuration in the exhibit, which statement is correct?

What are three Junos automation scripts? (Choose three.)

You are monitoring the control plane traffic using a network analyzer on an Ethernet network segment with all routers configured with IS-IS routing. Which two statements are true?...

Click the Exhibit button. In the exhibit, Customer A uses private RFC1918 addresses within its network. The customer wants to have all Internet access for its organization transit...

Two of your customers have just merged into a single company. Because of time constraints, you have been asked to connect Customer A's BGP-signaled Layer 2 VPN with Customer B's LD...

Click the Exhibit button. A network administrator has configured the LSPs shown in the exhibit on the ingress router of a 10-Gigabit Ethernet network. Which statement is true?

In an interdomain multicast deployment scenario, RP1 is in AS1 and RP2 is in AS2. MSDP is configured between RP1 and RP2 A source in AS1 and a receiver in AS2 have just become acti...

What is the first step of the CSPF algorithm's pruning process?

You are configuring CoS schedulers on an M Series router. For some queues, you want to limit throughput to the configured transmit rate, and buffer excess traffic. Which two transm...

You recently implemented an MSDP mesh group within your PIM-SM domain. Which two new behaviors can you expect? (Choose two.)

A network uses IPv4 and IPv6 addressing. You must use only OSPFv3 as your IGP. Which configuration will advertise both IPv4 and IPv6 addresses to the network?

Click the Exhibit button. Traffic is flowing through an MX Series router. Traffic using the top and critical schedulers is out of profile, while all other traffic is currently in p...

Click the Exhibit button. Given the topology in the exhibit, which two requirements must be met to allow multicast traffic to flow from AS65001 to AS65002? (Choose two.)

Which statement is true regarding the no-propagate-ttl feature?

Click the Exhibit button. On the network shown in the exhibit, a network administrator is attempting to bring up an LSP between Boston and Seattle using administrative groups. Whic...

Click the Exhibit button. In the exhibit, R1 is advertising a BGP route into both IS-IS and OSPF. There is mutual redistribution from R1 and R2 into both OSPF and IS-IS. The follow...

Click the Exhibit button. You manage the network in the exhibit. Your customer contacts you and requests that OSPF traffic being routed between CE-2 and CE-3 use the VPN connection...

Click the Exhibit button. The 10.200/16 network is announced as an IS-IS route by R2 to its IS-IS neighbors. R3 and R4 are configured with an IS-IS export policy, which announces t...

What does an operation (op) script do?

Click the Exhibit button. Based on the exhibit, why is the router not installing routes in the OSPF database into the routing table?

You are trying to establish an EBGP peering with a neighbor that is not in the same subnet. What configuration parameter, when accompanied with a supporting import policy, can you...

Click the Exhibit button. In the exhibit, a working Layer 3 VPN exists between all routers. No OSPF domain IDs are configured or attached in advertisements. What can be configured...

Your router is receiving four BGP route advertisements for the 192.168.100.0/24 network. By default, which route becomes active?

Click the Exhibit button. In the exhibit, the RIP network 192.168.0.0/24 is redistributed into OSPF on R8. Which two statements are true? (Choose two.)

In your network, customers are complaining about the performance of voice traffic. Which command displays the number of packets dropped due to the drop profile configured?

You operate a Layer 3 VPN for multiple customers. To support advanced route filtering on your PE routers, you must advertise more than one BGP community on advertised VPN routes to...

Click the Exhibit button. The configuration excerpts shown below are applied to R1 and R2: Based on the exhibit and the configurations above, what combination of IS-IS adjacencies...

Click the exhibit button. OSPF was configured 15 minutes ago and all databases are synchronizeD. However, the router is not receiving any transit traffiC. What is a reason for this...

Refer to the exhibit. You have configured your Junos device to tag routes; however, you are not seeing the routes being tagged. What is causing the problem?

Refer to the exhibit. You have implemented the IS-IS configuration shown in the exhibit. Which two statements are true? (Choose two.)

You want to use IS-IS on a GRE interface where the underlying Layer 3 MTU is 1500. Which statement is correct?

How does a router use BGP to deflect a distributed denial-of-service attack against a prefix at all edge routers in the same AS?

Refer to the exhibit. Referring to the exhibit, what are two reasons why R2 and R4 show a different hello interval than R1 and R3? (Choose two.)

You are hired at an ISP and your new employer asks you to become familiar with the routing policy. The A42+.* (21112) $ regular expression is in one of the policies. Which three AS...

You have an existing Layer 3 VPN connecting Site 1 and Site 2. Both CE devices are in the same autonomous system and are sharing routes with your PE devices using EBGP. You must sh...

Which set of BGP attribute values is most preferred by the Junos OS?

Refer to the exhibit. What is the expected result based on the configuration shown in the exhibit?

You are asked to set up a route reflection cluster for a group of IBGP peers that are fully meshed. You want to only reflect routes that arrive outside the cluster to the IBGP peer...

Refer to the exhibit. What would explain why the policer is allowing 100 Mbps of traffic into the router?

Refer to the exhibits. In the exhibits, what is the reason for the tail drops in queue 0?

Refer to the exhibit. The core scheduler-map is assigned to fe-0/l/0. The following traffic is queued for transmission from fe-0/1/3: 40 Mbps of best-effort traffic 2 Mbps of netwo...

In which configuration hierarchy must the hierarchical-scheduler parameter be applied to enable hierarchical scheduling?

You want to aggregate policing for different protocol families and different logical interfaces on the same physical interface. Which CoS configuration attribute will accomplish th...

Refer to the exhibit. Referring to the configuration shown in the exhibit, only the assured-forwarding queue exceeds its configured transmission rate. Given this scenario, in which...

Refer to the exhibit. Multicast traffic from 192.168.25.6 to 228.0.0.0/8 is entering the router on xe-3ft)/0. Which statement is correct?

You have recently deployed PIM-SM in your network and must control some of the associated protocol exchanges. Which three statements are true? (Choose three.)