JN0-663 practice examsIn development
Juniper Networks Certified Professional, Service Provider Routing and Switching
The professional carrier level that designs for scale and failure: BGP controlled and scaled through route reflection and confederations with inbound filtering as basic hygiene, RSVP-TE signalling constrained bandwidth-reserved paths that LDP cannot, and fast reroute repairing failures in tens of milliseconds; then advanced and inter-provider VPN topologies built by manipulating route targets, NG-MVPN carrying customer multicast inside a VPN, seamless MPLS stitching label paths across access, aggregation and core, and the BFD, graceful restart and end-to-end class of service that keep a network forwarding through routine failure.
What you get
Papers are cut from the bank and weighted like the real exam, and no question appears in two of them. Every wrong answer comes back on later days until you have it right.
What the exam covers
| Advanced BGP, label distribution and traffic engineering | Not published |
| Advanced VPNs, multicast and carrier-grade operations | Not published |
Two sample questions
1. Which protocol do hosts use to signal that they wish to receive a multicast group?
- The multicast source discovery protocol
- Protocol independent multicast
- The label distribution protocol
- The internet group management protocol — correct
Why: IGMP runs between hosts and their local router and is what tells the router that a group has an interested listener on the segment.
2. What does bandwidth reservation prevent?
- BGP peering
- The IGP working
- Oversubscription — correct
- OAM probes
Why: Bandwidth reservation prevents oversubscribing an engineered path.
The real JN0-663 exam
| Length | 120 minutes |
|---|---|
| Questions | 65 |
| Pass mark | Scaled; Juniper does not publish the percentage |
| Price | $300 USD |
| Recommended before you sit it | None enforced. JNCIS-SP specialist knowledge is assumed. |
| Valid for | 3 years |
Exam facts as published by Juniper; always check the vendor’s page before you book.
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