JN0-348 Pre-Exam Practice Tests | (Updated 95 Questions)
Valid JN0-348 Exam Q&A PDF - One Year Free Update
NEW QUESTION 34
Which two statements are true about high availability on Junos devices? (Choose two.)
- A. NSR is dependent on helper routers to assist the routing platform in restoring routing protocol information.
- B. BFD is slower at detecting failures than default GRE or OSPF timers.
- C. BFD is faster at detecting failures than default GRE or OSPF timers.
- D. NSR is independent of helper routers to assist the routing platform in restoring routing protocol information.
Answer: C,D
Explanation:
Explanation
https://www.juniper.net/documentation/en_US/junos/topics/concept/nsr-overview.html
NEW QUESTION 35
You are currently defining a new OSPF area. The area must advertise external routes but should not receive external routes from another area.
In this scenario, which type of area should you define?
- A. stub
- B. totally stubby
- C. not-so-stubby
- D. backbone
Answer: A
NEW QUESTION 36
You notice that there are currently two MAC addresses associated with a single access port in the bridge table on one of your EX Series switches. What are two explanations for this behavior?
(Choose two.)
- A. The mac-move-limit feature has been disabled on the access port.
- B. The access port connects to multiple hosts through a rogue device.
- C. The native VLAN feature has been associated with the access port.
- D. The access port connects to an IP phone which connects to a host device.
Answer: B,C
Explanation:
MAC move limiting detects MAC movement and MAC spoofing on access interfaces. You enable this feature on VLANs.
NEW QUESTION 37
Click to the Exhibit button. Referring to the exhibit, which router will become the BDR if all routers are powered on at the same time?
- A. R2
- B. R3
- C. R4
- D. R1
Answer: B
Explanation:
In LANs, the election of the designated router takes place when the OSPF network is initially established. When the first OSPF links are active, the routing device with the highest router identifier (defined by the router-id configuration value, which is typically the IP address of the routing device, or the loopback address) is elected the designated router. The routing device with the second highest router identifier is elected the backup designated router.
www.juniper.net/documentation/en_US/junos16.1/topics/concept/ospf-routing-designated-router- overview.html
NEW QUESTION 38
Exhibit.
Which statement is true about the configuration shown in the exhibit?
- A. The preference for the 172.30.25.1 next hop is 5.
- B. The preference for the 172.30.25.5.1 next hop is 7.
- C. The preferred next hop is 172.30.25.5.
- D. 172.30.25.5.1 is the preference next hop.
Answer: C
NEW QUESTION 39
Which two prefixes are martian routes by default? (Choose two.)
- A. 192.0.0.0/16
- B. 127.0.0.0/8
- C. 127.0.0.0/16
- D. 192.0.0.0/24
Answer: B,D
NEW QUESTION 40
How many bytes of overhead forms an IP-IP tunnel add to a packet?
- A. 24 bytes
- B. 28 bytes
- C. 20 bytes
- D. 14 bytes
Answer: C
NEW QUESTION 41
You are enabling dynamic ARP inspection on an EX4300 switch.
Which service is enabled by default in this scenario?
- A. DHCP snooping
- B. IP Source Guard
- C. persistent MAC learning
- D. MAC limiting
Answer: A
NEW QUESTION 42
Which statements is true when using LAGs with an EX4300?
- A. You can have up to member links per LAG.
- B. Member links must be contiguous.
- C. Half duplex is supported on the LAG.
- D. Speeds on member links can differ.
Answer: B
NEW QUESTION 43
Which state indicates that the BGP session is fully converged?
- A. Connect
- B. Up
- C. Established
- D. Active
Answer: C
Explanation:
In order to make decisions in its operations with peers, a BGP peer uses a simple finite state machine (FSM) that consists of six states: Idle; Connect; Active; OpenSent; OpenConfirm; and Established. In the Established state, the peers send Update messages to exchange information about each route being advertised to the BGP peer.
NEW QUESTION 44
Exhibit.
Referring to the exhibit, why is the route for 10.5.5.5 hidden?
- A. It is an L3VPN route.
- B. It is a Martian route.
- C. The next hop cannot be resolved.
- D. It has an invalid community.
Answer: B
NEW QUESTION 45
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 originator ID 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 next-hop attribute in prefixes advertised to AS 65501
- D. R1 will modify the AS path attribute in prefixes advertised to AS 65501
Answer: B,D
NEW QUESTION 46
A routing table contains multiple BGP routes to the same destination prefix. The route preference is the same for each route.
Referring to the exhibit, which route would be selected?
- A. route B
- B. route D
- C. route A
- D. route C
Answer: B
NEW QUESTION 47
Which three mechanisms are associated with the bridging process? (Choose two.)
- A. Flooding
- B. Aging
- C. Blocking
- D. listening
- E. Filtering
Answer: B,C,D
NEW QUESTION 48
Referring to the exhibit, a packet tagged with vlan-id 34 arrives on interface xe-0/2/3.0 with a source MAC that does not match an entry in the DHCP snooping database.
In this scenario, which statement is correct?
- A. The source MAC is added to the DHCP snooping database.
- B. The packet is forwarded andno error message is logged.
- C. The destination MAC added to the DHCP snooping database.
- D. An error message is logged and the packet is forwarded.
Answer: A
NEW QUESTION 49
You want to configure Layer 2 services over an IP-based tunneling mechanism between two sites. Which configuration statement is required to accomplish this task?
- A. set interfaces gr-0/0/0.0 encapsulation vlan-bridge
- B. set interfaces ip-0/0/0.0 encapsulation vlan-bridge
- C. set interfaces gr-0/0/0.0 family bridge
- D. set interfaces ip-0/0/0.0 family bridge
Answer: C
NEW QUESTION 50
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