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Juniper JN0-351 Exam Syllabus Topics:
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NEW QUESTION # 38
Which two statements are correct about IS-IS? (Choose two.)
- A. IS-IS uses IPv6 as its transport protocol in the Junos OS implementation.
- B. IS-IS sends a maximum metric value of 63 by default.
- C. IS-IS only allows you to configure two areas.
- D. IS-IS has two metric types and Junos sends both by default.
Answer: B,D
NEW QUESTION # 39
You are attempting to configure the initial two aggregated Ethernet interfaces on a router but there are no aggregated Ethernet interfaces available.
In this scenario, which configuration will enable these interfaces on this router?
- A.
- B.
- C.
- D.
Answer: C
Explanation:
Device count should be more than 1.
NEW QUESTION # 40
Based on the traceoptions output shown in the exhibit, what is the problem with the adjacency?
- A. MTU mismatch
- B. connectivity
- C. area mismatch
- D. authentication mismatch
Answer: C
NEW QUESTION # 41
Which three protocols support BFD? (Choose three.)
- A. FTP
- B. OSPF
- C. LACP
- D. BGP
- E. RSTP
Answer: B,C,D
Explanation:
https://www.juniper.net/documentation/us/en/software/junos/high-availability/topics/topic-map/bfd- configuring.html
NEW QUESTION # 42
Which mechanism is used to share routes between routing tables?
- A. RIB groups
- B. forwarding instances
- C. filter-based forwarding
- D. routing instances
Answer: A
NEW QUESTION # 43
You want to use filter-based forwarding (FBF) to forward traffic sourced from subnet 10.0.0.0/24 to a specific destination.
Which two routing instance types would enable you to accomplish this task? (Choose two.)
- A. forwarding
- B. virtual routing and forwarding
- C. virtual switch
- D. virtual router
Answer: A,D
NEW QUESTION # 44
Which two statements about DHCP snooping are correct? (Choose two.)
- A. By default, the Junos OS treats access ports as trusted and trunk ports as untrusted.
- B. DHCP snooping uses ARP to add statically defined IP addresses to its database.
- C. DHCP snooping inspects all DHCP packets on untrusted ports.
- D. The DHCP database maps IP addresses, MAC addresses, and the associated VLAN.
Answer: C,D
NEW QUESTION # 45
You are attempting to configure the initial two aggregated Ethernet interfaces on a router but there are no aggregated Ethernet interfaces available.
In this scenario, which configuration will enable these interfaces on this router?
- A.
- B.
- C.
- D.
Answer: D
Explanation:
Explanation
The correct answer to your question is
Option C shows the configuration of the statement, which defines the properties of the router chassis, such as the number of aggregated Ethernet interfaces, the number of FPCs, and the number of PICs1.
To enable aggregated Ethernet interfaces on a router, you need to specify the aggregated-devices statement under the chassis parameter to the desired number of interfaces2. For example, to enable two aggregated Ethernet interfaces, you can use the following configuration:
chassis { aggregated-devices { ethernet { device-count 2; } } }
Option C shows this configuration with the device-count set to 2, which will enable two aggregated Ethernet interfaces on the router. The other options do not show this configuration and will not enable any aggregated Ethernet interfaces on the router.
Therefore, option C is the correct answer to your question.
NEW QUESTION # 46
What is the default hello interval on an OSPF interface?
- A. 20 seconds
- B. 10 seconds
- C. 60 seconds
- D. 30 seconds
Answer: B
NEW QUESTION # 47
Which statement is correct about GRE tunnels?
- A. GRE tunnels only support encapsulating non-IP traffic.
- B. GRE tunnels only support encapsulating IP traffic.
- C. The time-to-live field in the tunnel payload is decremented during transit.
- D. There are 20 bytes of overhead with GRE encapsulation.
Answer: C
NEW QUESTION # 48
Which two elements are used to create the STP bridge ID? (Choose two.)
- A. the port cost
- B. the bridge priority value
- C. the root port number
- D. the system MAC address
Answer: B,D
NEW QUESTION # 49
Your GRE tunnel is not transitioning to the Upstatus. What would be the first step in troubleshooting the problem?
- A. Verify the status of the management routing instance.
- B. Verify tunnel endpoint reachability.
- C. Verify that the status of the management interface is up.
- D. Verify that the routing instance for GRE tunnels is created.
Answer: B
NEW QUESTION # 50
You are troubleshooting a BGP routing issue between your network and a customer router and are reviewing the BGP routing policies. Which two statements are correct in this scenario? (Choose two.)
- A. Export policies are applied to routes in the RIB-ln table.
- B. Export policies are applied after the RIB-Local table.
- C. Import policies are applied after the RIB-ln table.
- D. Import policies are applied to routes in the RIB-Local table.
Answer: B,C
Explanation:
Explanation
In BGP, routing policies are used to control the flow of routing information between BGP peers1.
Option C suggests that import policies are applied after the RIB-In table. This is correct because import policies in BGP are applied to routes that are received from a BGP peer, before they are installed in the local BGP Routing Information Base (RIB-In)1. The RIB-In is a database that stores all the routes that are received from all peers1.
Option D suggests that export policies are applied after the RIB-Local table. This is correct because export policies in BGP are applied to routes that are being advertised to a BGP peer, after they have been selected from the local BGP Routing Information Base (RIB-Local)1. The RIB-Local is a database that stores all the routes that the local router is using1.
Therefore, options C and D are correct.
NEW QUESTION # 51
Which two events cause a router to advertise a connected network to OSPF neighbors? (Choose two.)
- A. When an OSPF adjacency is established.
- B. When a static route to the 224.0.0.5 address is created.
- C. When a static route to the 224.0.0.6 address is created.
- D. When an interface has the OSPF passive option enabled.
Answer: A,B
Explanation:
A is correct because when an OSPF adjacency is established, a router will advertise a connected network to OSPF neighbors. An OSPF adjacency is a logical relationship between two routers that agree to exchange routing information using the OSPF protocol1. To establish an OSPF adjacency, the routers must be in the same area, have compatible parameters, and exchange hello packets1. Once an OSPF adjacency is formed, the routers will exchange database description (DBD) packets, which contain summaries of their link-state databases (LSDBs)1. The LSDBs include information about the connected networks and their costs2. Therefore, when an OSPF adjacency is established, a router will advertise a connected network to OSPF neighbors through DBD packets.
D is correct because when a static route to the 224.0.0.5 address is created, a router will advertise a connected network to OSPF neighbors. The 224.0.0.5 address is the multicast address for all OSPF routers3. A static route to this address can be used to send OSPF hello packets to all OSPF neighbors on a network segment3. This can be useful when the network segment does not support multicast or when the router does not have an IP address on the segment3. When a static route to the 224.0.0.5 address is created, the router will send hello packets to this address and establish OSPF adjacencies with other routers on the segment3. As explained above, once an OSPF adjacency is formed, the router will advertise a connected network to OSPF neighbors through DBD packets.
NEW QUESTION # 52
Which two actions are performed by the firewall filter shown in the exhibit? (Choose two.)
- A. Term two requires a fromstatement.
- B. Frames with the 88:05:00:29:3c:de source MAC address are accepted and logged.
- C. All traffic is permitted.
- D. Frames without the 88:05:00:29:3c:de source MAC address are discarded and logged.
Answer: B,C
NEW QUESTION # 53
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