Service Provider Routing and Switching, Specialist v1.0
Question 1
Which two statements describe operations performed by the encapsulating tunnel endpoint in an IP-IP tunnel? (Choose two.)
- A. It decrements the time-to-live (TTL) counter by one in the inner IP header
- B. It modifies the source and destination addresses in the inner IP header
- C. It adds an outer IP header with the destination address of the remote tunnel endpoint
- D. It creates and adds a new inner IP header with the remote destination deviceג€™s IP address
Answer : AC
Question 2
Click the Exhibit button.
Referring to the exhibit, which two statements are true? (Choose two.)
- A. The configuration is for an external BGP session
- B. The local-address statement is not required for the BGP session to establish correctly
- C. The configuration is for an internal BGP session
- D. The local-address statement is required for the BGP session to establish correctly
Answer : AD
Reference:
https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/local-address-edit-protocols-bgp.html
Question 3
Which MPLS feature works with Constrained Shortest Path First (CSPF) to protect against the primary and secondary paths using the same link?
- A. fate-sharing
- B. explicit null configuration
- C. policy control over LSP selection
- D. LSP metrics
Answer : A
Question 4
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
- A. Routes from 10.1.1.1 are more preferred than routes from 10.2.2.2
- B. Routes from 10.2.2.2 are less preferred than the default local preference
- C. Routes from 10.3.3.3 are more preferred than the default local preference
- D. Routes from 10.2.2.2 are less preferred than routes from 10.3.3.3
Answer : C
Question 5
You want to disable MAC learning only for interface ge-0/0/0.0 on an MX Series device.
Which syntax will accomplish this task?
A.
B.
C.
D.
Answer : C
Reference:
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/layer-2-services-mac-bridge-domain-or-logical-interface-disabling- learning-for.html
Question 6
You must establish an MPLS LSP between two locations. You are required to ensure that the LSP traverses specific routers within the network.
Which solution is correct in this scenario?
- A. Enable traffic engineering within RSVP and enable the Fast Reroute feature
- B. Implement RSVP and define the explicit route the LSP must follow
- C. Implement LDP and define the explicit route the LSP must follow
- D. Enable traffic engineering within LDP and define the explicit route the LSP must follow
Answer : B
Question 7
You are deploying an RSVP-based MPLS network in your core. You must ensure that your LSPs are continually analyzing the usage levels and recalculating the best LSP. You also want to ensure that a minimal amount of traffic is lost when an LSP is re-signaled without user intervention.
Which two features must be enabled in this scenario? (Choose two.)
- A. adaptive
- B. MPLS fast reroute
- C. class of service
- D. auto-bandwidth
Answer : BD
Question 8
Click the Exhibit button.
Your co-worker configures the ge-0/0/0 interface with an IPv6 address of 2001:db8:0:9::/64. After committing the configuration, your co-worker executes the command shown in the exhibit.
What is the fe80::206:aff:fe0e:e01/64 address in this scenario?
- A. the loopback address
- B. the multicast address
- C. the statically assigned address
- D. the link-local address
Answer : D
Question 9
Which two statements are true when considering logical systems? (Choose two.)
- A. Logical systems do not support nonstop active routing
- B. Logical systems share the master routing table and can create routing instances
- C. Logical tunnels cannot be used to connect logical systems
- D. Logical systems provide management separation by providing user access per logical system
Answer : BD
Reference:
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/security-logical-systems-for-routers-and-switches.html
Question 10
Which two high availability features preserve interface and kernel information during reconvergence? (Choose two.)
- A. graceful restart (GR)
- B. nonstop bridging (NSB)
- C. nonstop active routing (NSR)
- D. graceful Routing Engine switchover (GRES)
Answer : CD
Question 11
To which multicast address is a VRRP advertisement packet sent?
- A. 224.0.0.6
- B. 224.0.0.18
- C. 224.0.0.22
- D. 224.0.0.13
Answer : B
Reference:
https://tools.ietf.org/html/rfc3768
Question 12
Which RSVP object allows LSRs to influence path selection?
- A. record route object
- B. explicit route object
- C. hop object
- D. session object
Answer : D
Question 13
In which situation would you disable penultimate-hop popping?
- A. When you want to bypass a penultimate router that does not support IPv6 tunneling
- B. When you want to ensure the penultimate router can perform the destination route lookup
- C. When you want to enforce the same class-of-service behavior through the entire LSP
- D. When you want to utilize a penultimate router that supports IPv6 tunneling
Answer : C
Question 14
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
- A. R2 will be the designated router
- B. R3 will not participate in the election process
- C. R1 will not participate in the election process
- D. R4 will be the designated router
Answer : B
Reference:
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/configuring-ospf-areas.html#id-example-controlling-ospf-designated-router- election
Question 15
You have two MX Series devices connected together and configured for Layer 2 operations. The interface that connects the two routers must carry tagged and untagged traffic.
Which approach would meet this objective?
- A. Configure the interfaces as access ports with the native VLAN option
- B. Configure the interfaces as trunk ports with the native VLAN option
- C. Configure the interfaces as access ports with the voice VLAN option
- D. Configure the interfaces as trunk ports with the voice VLAN option
Answer : B