Juniper JN0-649 Certification Exam Sample Questions and Answers

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Juniper JN0-649 (JNCIP-ENT) Sample Questions:

01. Which of the following is an application of MSDP in a multicast network?
a) To allow the advertisement of multicast sources between AS boundaries.
b) To encrypt multicast traffic between the sender and receivers.
c) To reduce the size of the multicast routing table.
d) To manage PIM-SM state information more effectively.
 
02. In Junos, what does the command 'set protocols bgp group IBGP type internal' accomplish?
a) It sets up an external BGP group.
b) It configures an iBGP group with internal peers.
c) It disables the BGP group.
d) It configures a redistribution policy for the BGP group.
 
03. How is MSDP used in conjunction with PIM-SM?
a) To exchange multicast source information between PIM-SM domains
b) To replace the need for an RP within a PIM-SM domain
c) To optimize the multicast routing table size
d) To enhance multicast traffic encryption
 
04. What is the purpose of the 'community' attribute in BGP?
a) To advertise the presence of a route reflector in the network.
b) To dictate the exact path a route should take through the internet.
c) To provide a way to mark routes for specific treatment.
d) To assign a local preference to a route.
 
05. For what purpose is the 'override-metric' used in an OSPF configuration on a Junos device?
a) To influence the OSPF route selection process.
b) To change the metric of OSPF routes during redistribution.
c) To set a fixed metric for all OSPF routes.
d) To modify the default metric for a specific OSPF interface.
 
06. When is it most appropriate to use BGP instead of an IGP like OSPF?
a) In small networks with limited numbers of routes.
b) When a network requires fast convergence times.
c) For inter-domain routing between autonomous systems.
d) Within an autonomous system with a single link between routers.
 
07. How does Junos handle BGP route advertisements from a neighbor that include the local AS in the AS_PATH?
a) It rejects the route by default.
b) It accepts the route and adds the local AS to the AS_PATH.
c) It replaces the received AS_PATH with the local AS.
d) It lowers the preference of the route.
 
08. When implementing BGP routing policy, which Junos policy-statement term action can be used to reject a route?
a) accept
b) next policy
c) reject
d) next term
 
09. For multicast traffic, what does the term 'scoping' refer to?
a) Prioritizing multicast traffic over unicast
b) Translating the multicast address to a unicast address
c) Expanding the multicast group membership to include all hosts
d) Limiting the reach of the multicast stream within the network
 
10. In a Junos device, which statement is correct for configuring a Level 1 IS-IS router?
a) set protocols isis interface ge-0/0/0.0 level 1
b) set protocols isis level 1 wide-metrics-only
c) set protocols isis level 2 wide-metrics-only
d) set protocols isis level 1 disable

Solutions:

Question: 01

Answer: a

Question: 02

Answer: b

Question: 03

Answer: a

Question: 04

Answer: c

Question: 05

Answer: d

Question: 06

Answer: c

Question: 07

Answer: a

Question: 08

Answer: c

Question: 09

Answer: d

Question: 10

Answer: a

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