JN0-661 Exam Questions

Your customer requires a Layer 2 VPN service (draft-kompella-mpls-l2vpn). You are asked to describe the operational requirements on the PE router supporting this service. Which two...

During a network migration window, an engineer issues the set protocols isis overload timeout 1200 command. In this scenario, which effect does this have on the IS-IS operations of...

What is the final component of CoS processing on a Junos device?

You are connecting your OSPF router to your customer's RIP router and redistributing the customer's routes into your OSPF domain. Your OSPF routes is part of an NSSA and the ABR is...

Click the Exhibit button. Referring to the exhibit button, you are asked to ensure that traffic destined for the 5.5.5.0/24 network must use the LSP named Top. Which two actions wo...

A PE provides VLAN VPLS service to a CE attached with two links. You want to prevent Layer 2 loops and provide link redundancy. Which two actions will accomplish this task? (Choose...

Click the Exhibit button. R1 is exporting 2000:FEFE:100::/64 to R2 over the EBGP peering session as shown in the exhibit. What will R1 use for this route's protocol next hop when a...

You work for a service provider and need to build EVPN service which provides an active/active multihoming topology using a single CE at each site. In this scenario, which two stat...

Which two statements are true regarding the CSPF algorithm? (Choose two.)

You have a strict-high queue configured. You notice that under bursty traffic conditions, there are tail drops on the strict-high queue. Which action would solve this problem?

Packets traverse a Junos device configured for class of service. Which two statements are true in this scenario? (Choose two.)

Click the Exhibit button. You are using PIM-SM in your network and want to ensure that all available equal-cost paths are being used for multicast traffic. Referring to the exhibit...

You have configured an OSPF stub area. The routes in the stub area require external reachability. Which statement explains how OSPF meets this requirement?

Which two statements are associated with any-source multicast? (Choose two.)

In a carrier-of-carrier VPN model, which type of network layer reachability information is used for the MP- BGP signaling between CE and PE routers?

To reduce the size of OSPF Area 100, you configure the area with the no-summaries parameter. After committing this configuration change, you notice that an OSPF router in a remote...

Click the Exhibit button. Referring to the exhibit, you control AS 24652. You are asked to ensure that traffic destined to the 23.56.83.0/24 network from ISP 4 takes the most optim...

An L2VPN (draft-kompella-mpls-l2vpn) is established between two PE routers to provide connectivity between two customer sites. Which two statements related to this deployment are t...

Click the Exhibit. The exhibit shows the partial configurations of PE1 and PE2. PE2 is unable to forward VPN data to PE1. What should be configured to solve this problem?

What are two characteristics of L2 circuits? (Choose two.)

Click the Exhibit button. user@R1# show interfaces lo0 unit 0 { family inet { address 10.220.1.1/32; } family iso { address 49.0001.0010.0220.0101.00; } } {edit protocols isis} use...

Click the Exhibit button. Referring to the exhibit, which LDP Layer 2 circuit configuration on PE1 maps traffic to an LSP destined to the secondary loopback address of PE2?

Which routing instance type is used with a Layer 2 VPN?

Click the Exhibit button. Both autonomous systems shown in the exhibit use BGP with a full-mesh IPGP configuration within each autonomous system and EBGP between the two autonomous...

Click the Exhibit button. AS 100 is originating and sending EBGP routes to AS 200. AS 200 is acting as a transit provider and sending those routers to AS 300. AS 200 is using the c...

An MX Series router has received a BGP prefix from its peer. There are multiple destination routes to the BGP prefix with the default BGP route preference. In this scenario, what i...

PE1 and PE2 provide a BGP-signaled VPLS service named VPN Blue. PE1 has site ID 2, label base 2500, and label offset 1. PE2 has site ID 4, label base 3000, and label offset 1. Whic...

Click the Exhibit button. Given the configuration shown in the exhibit and the admin groups assigned to the equal cost links, which path will the LSP take to get from R1 to R10?

You are provisioning a new VPLS on your PE router. Your customer needs to send Q-in-Q traffic across the VPLS. In this scenario, which type of encapsulation is required on your PE...

Which two statements are true about route leaking in a Level 1-Level 2 network environment? (Choose two.)

You are asked to implement route damping on a BGP router. There are two specific requirements for your implementation: 1. damp all prefixes with a mask length equal to or greater t...

You are asked to deploy VPLS in your network as a new service for several customers, and you must identify the configuration and provisioning requirements for your customers. In th...

Click the Exhibit button. ISP1 has created an L3VPN to connect CE1 and CE2. The PE-CE routing protocol is OSPF. Referring to the exhibit, which technology will allow CE1 to receive...

Click the Exhibit button. RP1 and RP2 are acting as PIM-SM rendezvous points (Rps) in their autonomous system. Referring to the diagram, which purpose does the MSDP session between...

A new service provider asked you to design its IS-IS network. You determined that two distinct IS-IS areas will be required and you must now create an ISO addressing plan for the p...

What are two characteristics of L3VPNs? (Choose two.)

Which routing instance type is used with a Layer 3 VPN?

You are asked to configure PIM-SM in your network. Your implementation must allow for load sharing between redundant RPs and, should an RP failure occur, the RP failover time shoul...

Click the Exhibit button. As a network administrator, you are asked to configure the VPN-B routing instance so that P routers are masked in CE2-to-CE5 trace routes. For the VPN-A r...

Click the exhibit button. user@PE2# run show 12circuit connections Layer-2 Circuit Connections: Legend for connection status (St) EI - - encapsulation invalid NP - - interface h/w...

A customer's traffic is traversing your network, which consists of Junos devices. You must configure class of service for the traffic to meet a service-level agreement. In this sce...

Click the Exhibit. Referring to the exhibit, which type of NG MVPN route will be advertised by PE2 to PE1?

An L1 router has formed an adjacency with an L1-L2 router. Under which condition will the L1-L2 router set the attach bit in its Level 1 link-state PDUs?

Click the Exhibit button. [edit] user@PE-1# run show l2 circuit connections Layer-2 Circuit Connections: Legend for connection status (St) EI - - encapsulation invalid NP - - inter...

Which command will match communities 101:111, 111:1, and 999:1111?

Click the Exhibit button. [edit] user@PE-1# show protocols rsvp { interface all; } mpls { label-switched-path p1 { from 1.1.1.1; to 4.4.4.4; no cspf; } interface all; } bgp { group...

A layer 2 circuit (RFC 4447) is established between two PE routers to provide connectivity between two customer sites. Which two statements related to this deployment are true?

Click the exhibit button. [edit protocols pim] user@R1# show rp { bootstrap { family inet { priority 250; } } local { address 10.220.1.1; priority 1; group-ranges { 224.1.1.11/32;...

Click the Exhibit button. [edit] [edit] lab@r1# show protocols lab@r2# show protocols ospf3 { ospf3 { area 0.0.0.0 { area 0.0.0.0 { interface 1o0.0; interface 1o0.0; interface ge-1...

Click the Exhibit button. Referring to the exhibit, you have a network that uses PIM-SM and you need to block certain PIM register messages. Which two statements are Correct in thi...