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Dear customers, it is our honor to introduce our JN0-690 training materials files to you as follows. As we know, when facing a variety of products for a decision, it inclines to get confused to decide which one is the most useful and effective to realize our aim---passing the Juniper JN0-690 exam smoothly. Here we offer the best JN0-690 exam guide for you and spare your worries. With regard to our JN0-690 exam resources, it can be described in these aspects, so please take a look of the features with us:
Juniper JN0-690 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Routing Policy and Firewall Filters | - Policy evaluation and debugging
|
| System Operations and Device Health | - Chassis and hardware status
|
| Troubleshooting Methodology and Tools | - Junos operational commands (ping, traceroute, monitor traffic)
|
| Layer 3 Routing Troubleshooting | - BGP troubleshooting
|
| Layer 2 and Switching Troubleshooting | - VLAN and bridging issues
|
| VPN and Service Troubleshooting | - IPsec VPN issues
|
Juniper Junos Troubleshooting Sample Questions:
Which statement is correct about troubleshooting?
- A. Establishing a network baseline is important to help understand when something is not working.
- B. You must always have a complete understanding of the problem before you begin gathering any information.
- C. The problem must be reproducible before attempting a potential solution.
- D. You must be sure the problem will be resolved before attempting a potential solution.
Correct Answer: A 🗳️
Click the Exhibit button.
You recently added an EBGP neighbor to R1 and you are receiving a single BGP route for their internal network. You notice that on R2 the route learned from C1 is being marked as hidden because the next hop is unusable.
Referring to the exhibit, what should you do to resolve the problem?
- A. Create a next-hop-self import policy on R1 and apply this policy to EBGP.
- B. Create a next-hop-self export policy on R1 and apply this policy to IBGP.
- C. Create a next-hop-self import policy and apply this policy to IBGP.
- D. Create a next-hop-self import policy on R2 and apply this policy to IBGP.
Correct Answer: B 🗳️
Which command would be helpful in determining the time at which the protocols started?
- A. show chassis hardware
- B. show system uptime
- C. show configuration
- D. show route
Correct Answer: B 🗳️
Which two statements are correct about the show ospf route and the show route protocols ospf commands? (Choose two.)
- A. show ospf route displays the entries in the Open Shortest Path First (OSPF) routing table.
- B. show route protocols ospf displays the entries in the Open Shortest Path First (OSPF) routing table.
- C. show route protocols ospf displays the route entries in the routing table that were learned through OSPF.
- D. show ospf route displays the route entries in the routing table that were learned through OSPF.
Correct Answer: A,C 🗳️
-- Exhibit --
Local traffic capture on r1:
Address resolution is OFF.
Listening on ge-5/3/0.0, capture size 1514 bytes
22:16:33.610374 Out IP (tos 0xc0, ttl 1, id 34562, offset 0, flags [none], proto: OSPF (89), length:
76) 10.1.2.1 > 224.0.0.5: OSPFv2, Hello, length 56 [len 44]
Router-ID 1.1.1.1, Backbone Area, Authentication TypE. none (0)
Options [External, LLS]
Hello Timer 10s, Dead Timer 40s, Mask 255.255.255.252, Priority 128
LLS: checksum: 0xfff6, length: 3
Extended Options (1), length: 4
Options: 0x00000001 [LSDB resync]
[edit]
user@r1# run show ospf interface
Interface State Area DR ID BDR ID Nbrs
ge-5/3/0.0 PtToPt 0.0.0.0 0.0.0.0 0.0.0.0 0
lo0.1 DR 0.0.0.0 1.1.1.1 0.0.0.0 0
[edit]
user@r1# run show ospf neighbor
Local traffic capture on r2:
Address resolution is OFF.
Listening on ge-5/3/1.0, capture size 1514 bytes
22:16:42.238030 Out IP6 (class 0xc0, hlim 1, next-header: OSPF (89), length: 36)
fe80::6687:88ff:fe6c:6769 > ff02::5: OSPFv3, Hello, length 36
Router-ID 2.2.2.2, Backbone Area
Options [V6, External, Router]
Hello Timer 10s, Dead Timer 40s, Interface-ID 0.0.0.1, Priority 128
Neighbor List:
user@r2# run show ospf interface OSPF instance is not running -- Exhibit -
Click the Exhibit button.
Referring to the exhibit, routers r1 and r2 are connected to each other by interfaces ge-5/3/0 and ge-5/3/1 respectively. They do not become OSPF neighbors.
Which two statements are true? (Choose two.)
- A. r2 is configured for OSPFv2.
- B. r2 is configured for OSPFv3.
- C. r1 is configured for OSPFv3.
- D. r1 is configured for OSPFv2.
Correct Answer: B,D 🗳️
