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Juniper JN0-349 Exam Topics:
| Section | Objectives |
|---|---|
| BGP | Describe the concepts, operation or functionality of BGP
Demonstrate knowledge of how to configure, monitor, or troubleshoot BGP
|
| Spanning Tree | Describe the concepts, benefits, operation, or functionality of the Spanning Tree Protocol
Demonstrate knowledge how to configure, monitor, or troubleshoot Spanning Tree
|
| Protocol Independent Routing | Identify the concepts, operation or functionality of various protocol-independent routing components
Demonstrate knowledge how to configure, monitor, or troubleshoot various protocol-independent routing components
|
| IS-IS | Describe the concepts, operation or functionality of IS-IS
Demonstrate knowledge of how to configure, monitor or troubleshoot IS-IS
|
| OSPF | Describe the concepts, operation or functionality of OSPF
Demonstrate knowledge how to configure, monitor or troubleshoot OSPF
|
NEW QUESTION 52
Click the Exhibit button.
Based on the traceoptions output shown in the exhibit, what is the problem with the adjacency?
- A. area mismatch
- B. MTU mismatch
- C. connectivity
- D. authentication mismatch
Answer: A
NEW QUESTION 53
Click the Exhibit button.
Referring to the exhibit, which two statements about BGP prefixes advertised by R1 to AS 65501 are true? (Choose two.)
- A. R1 will modify the next-hop attribute in prefixes advertised to AS 65501
- B. R1 will modify the cluster list attribute in prefixes advertised to AS 65501
- C. R1 will modify the AS path attribute in prefixes advertised to AS 65501
- D. R1 will modify the originator ID attribute in prefixes advertised to AS 65501
Answer: A,D
NEW QUESTION 54
Which statement is true when using LAGs with an EX4300?
- A. Half duplex is supported on the LAG.
- B. You can have up to 16 member links per LAG.
- C. Speeds on member links can differ.
- D. Member links must be contiguous.
Answer: B
NEW QUESTION 55
Click the Exhibit button.
Referring to the exhibit, Router-1 is attempting to form an EBGP session with Router-2.
However, BGP routes are never exchanged between Router-1 and Router-2.
What is causing the problem?
- A. The TCP-MSS value is set too low
- B. The EXT group is not configured as an external type BGP peering session
- C. The EBGP session is configured to use the wrong AS
- D. The keep allstatement is preventing the session from establishing
Answer: B
NEW QUESTION 56
Exhibit.
Referring to the exhibit, the local router should have an IS-IS adjacency with a neighboring router, but the adjacency never establishes correctly.
What should you do to solve the problem?
- A. Disable level 2 for the interfaces.
- B. Disable level 1 for the interfaces.
- C. Disable wide metrics.
- D. Change the local IS-IS area ID to 49.0002.
Answer: D
NEW QUESTION 57
Exhibit.
Referring to the exhibit, which policy will export routes to IBGP peers?
- A. scatic-2
- B. staric-4
- C. static.c-2
- D. static-1
Answer: B
NEW QUESTION 58
You are a service provider and have multiple customers in a building.
You are installing a new switch that can host all of your customers. However, you would like to ensure that one customer cannot see or broadcast to another customer.
You would also like to have them use a common gateway IP address from the building. What should be used to provide this access?
- A. VLAN
- B. private VLAN
- C. filter-based VLAN
- D. Layer 2 tunneling
Answer: B
NEW QUESTION 59
What types of authentication are supported in Junos for OSPF?
- A. Simple password
- B. All of the above
- C. MD5 checksum
- D. Hitless key chain of MD5 keys/checksums
Answer: B
NEW QUESTION 60
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 61
Which two OSPF header fields must match to form an adjacency over a broadcast connection? (Choose two.)
- A. neighbor
- B. router priority
- C. options
- D. hello interval
Answer: C,D
NEW QUESTION 62
How many bytes of overhead does an IP-IP tunnel add to a packet?
- A. 28 bytes
- B. 20 bytes
- C. 24 bytes
- D. 14 bytes
Answer: B
NEW QUESTION 63
Which three mechanisms are associated with the bridging process? (Choose three.)
- A. flooding
- B. blocking
- C. aging
- D. filtering
- E. listening
Answer: A,C,D
Explanation:
Explanation
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/bridging-and-vlans.html
NEW QUESTION 64
What are three well-known mandatory BGP attributes? (Choose three.)
- A. community
- B. next hop
- C. origin
- D. local preference
- E. AS path
Answer: B,C,E
NEW QUESTION 65
Which statement is correct about IS-IS link state PDUs?
- A. They are used to determine whether the neighbors are Level 1 or Level 2.
- B. They are used to establish adjacencies.
- C. They are used to maintain link-state database synchronization.
- D. They are used to build the link-state database.
Answer: D
NEW QUESTION 66
Click the Exhibit button.
You manage the Layer 2 network shown in the exhibit. You experience a failure on the ge-0/0/0 link between Switch-1 and Switch-2.
Which statement is correct about the expected behavior?
- A. Switch-2 will become the root bridge for a separate RSTP topology
- B. Switch-2's ge-0/0/2 port role and state will remain as designated and forwarding
- C. Switch-2's ge-0/0/2 port role and state will transition to root and forwarding
- D. Switch-2 will remove itself from the RSTP topology
Answer: C
NEW QUESTION 67
Exhibit.
Your switches are managed using Junos Space Network Director. You want to secure the switches using a Network Director filter profile. A filter profile containing one term shown In the exhibit is deployed to ports on managed devices.
Which traffic will be accepted by the filter?
- A. All traffic will be accepted.
- B. No traffic will be accepted.
- C. Traffic containing a source MAC of 02:85:05:00:00:00/24 will be accepted.
- D. Traffic containing a destination MAC of 02:85:05:00:00:00/24 will be accepted.
Answer: C
NEW QUESTION 68
What are two benefits of 802.3ad link aggregation? (Choose two)
- A. It increases bandwidth
- B. It creates physical layer redundancy.
- C. It simplifies interface configuration.
- D. It ensures symmetrical paths
Answer: A,B
Explanation:
Explanation
Aggregating multiple links between physical interfaces creates a single logical point-to-point trunk link or a LAG. The LAG balances traffic across the member links within an aggregated Ethernet bundle and effectively increases the uplink bandwidth. Another advantage of link aggregation is increased availability, because the LAG is composed of multiple member links. If one member link fails, the LAG continues to carry traffic over the remaining links.
https://www.juniper.net/documentation/us/en/software/junos/interfaces-ethernet-switches/topics/topic-map/switc
NEW QUESTION 69
Which area is reserved for the OSPF backbone?
- A. Area 2.2.2.2
- B. Area .3.3.3.3
- C. Area 0.0.0.0
- D. Area 1.1.1.1
Answer: C
NEW QUESTION 70
Which two statements are true about an EX2300 device? (Choose two.)
- A. By default, all switch ports are trunk ports.
- B. By default, all switch ports are associated with the default VLAN.
- C. By default, all switch ports are access ports.
- D. By default, trunk ports can carry untagged traffic.
Answer: B,C
NEW QUESTION 71
Exhibit.
Based on the traceoptions output shown in the exhibit, what is the problem with the adjacency?
- A. area mismatch
- B. MTU mismatch
- C. connectivity
- D. authentication mismatch
Answer: A
NEW QUESTION 72
Which statement is true about Layer 2 firewall filters on EX Series switches?
- A. They are stateful and evaluated by the control plane.
- B. They are stateless and evaluated by the forwarding plane.
- C. They are stateful and evaluated by the forwarding plane.
- D. They are stateless and evaluated by the control plane.
Answer: B
NEW QUESTION 73
What BGP attribute is mostly likely to influence a remote AS that you do not peer with?
- A. MED
- B. AS path
- C. This is not possible given the local scope of BGP
- D. Local preference
Answer: B
NEW QUESTION 74
Your network connections to the Internet through two different ISPs using EBGP. You must ensure that ISP1 is the primary path used for all traffic entering your network while using ISP2 as a backup path.
In this scenario, which statement is correct?
- A. You should prepend your local AS number three times on routes that you are sending to ISP2.
- B. You should use a lower MED value on routes sent to ISP1.
- C. You should assign a higher local preference on routes that you are sending to ISP1.
- D. You should change the next hop for all routers sent to ISP2.
Answer: A
NEW QUESTION 75
What are two characteristics of OSPF ABRs? (Choose two.)
- A. ABRs cannot be part of the backbone and another area at the same time.
- B. ABRs transmit routing information between the backbone and other areas.
- C. ABRs link two OSPF areas
- D. ABRs inject information from outside the OSPF domain.
Answer: B,C
Explanation:
Explanation
Area border router (ABR): An OSPF router with links in two areas, the ABR is responsible for connecting OSPF areas to the backbone. It transmits network information between the backbone and other areas.
NEW QUESTION 76
Which OSPF packet type is sent when an OSPF router detects its database is stale?
- A. link-state request
- B. database description
- C. link-state acknowledgment
- D. hello
Answer: A
NEW QUESTION 77
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