Quiz Juniper - The Best JN0-351 - Enterprise Routing and Switching, Specialist (JNCIS-ENT) Valid Exam Camp

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Juniper JN0-351 Exam Syllabus Topics:

SectionObjectives
Layer 2 Switching or VLANs- Native VLANs and voice VLANs
- Inter-VLAN routing
- Frame processing
- Ports and tagging
- Configuration, monitoring, and troubleshooting
- VLAN concepts and functionalities
- Bridging components
OSPF- OSPF configuration and troubleshooting
BGP- BGP configuration and troubleshooting
Tunnels- Tunnel technologies
High Availability- VRRP and redundancy protocols
- High availability design and integration
IS-IS- IS-IS configuration and troubleshooting
Layer 2 Security- Common Layer 2 attack mitigation
- DHCP snooping
- Dynamic ARP inspection
- Port security implementation
Protocol Independent Routing- Routing fundamentals
Spanning Tree Protocol- STP topology design and troubleshooting
- Loop prevention and redundancy
- Convergence issues identification
- Port roles interpretation
- Bridge priority and port cost optimization

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Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) Sample Questions (Q98-Q103):

NEW QUESTION # 98
Which two statements are correct about Junos OS static route configuration with a "qualified- next-hop"? (Choose two.)

Answer: A,B

Explanation:
The "qualified-next-hop" option in a Junos OS static route configuration allows an administrator to specify a different preference (administrative distance) for individual next hops of the same destination prefix. This is commonly used to implement floating static routes, where a backup next hop with a higher preference value is only used if the primary next hop becomes unavailable.


NEW QUESTION # 99
Which two statements describe NSR? (Choose two.)

Answer: C,D


NEW QUESTION # 100
Which statement is correct about Junos OS class of service (CoS) forwarding classes?

Answer: B

Explanation:
In Junos OS class of service, a forwarding class is used to group packets for output queuing and scheduling treatment on egress interfaces. Packets are typically assigned to a forwarding class based on a classifier that examines fields such as DSCP or IEEE 802.1p CoS bits, and each forwarding class is then mapped to a specific output queue with defined scheduling behavior.


NEW QUESTION # 101
You are configuring a router as a new Level 1 router in an existing Level 1 area. The NET address for an existing Level 1 router is 49.0011.1111.2222.3333.00. The new router must form a Level 1 adjacency with the existing router. What should be the area ID in this scenario?

Answer: A


NEW QUESTION # 102
You are concerned about spoofed MAC addresses on your LAN.
Which two Layer 2 security features should you enable to minimize this concern? (Choose two.)

Answer: B,C

Explanation:
* A is correct because dynamic ARP inspection (DAI) is a Layer 2 security feature that prevents ARP spoofing attacks. ARP spoofing is a technique that allows an attacker to send fake ARP messages to associate a spoofed MAC address with a legitimate IP address. This can result in traffic redirection, man-in-the-middle attacks, or denial-of-service attacks. DAI validates ARP packets by checking the source MAC address and IP address against a trusted database, which is usually built by DHCP snooping 1 . DAI discards any ARP packets that do not match the database or have invalid formats 1 .
* C is correct because DHCP snooping is a Layer 2 security feature that prevents DHCP spoofing attacks. DHCP spoofing is a technique that allows an attacker to act as a rogue DHCP server and offer fake IP addresses and other network parameters to unsuspecting clients. This can result in traffic redirection, man-in-the-middle attacks, or denial-of-service attacks. DHCP snooping filters DHCP messages by classifying switch ports as trusted or untrusted. Trusted ports are allowed to send and receive any DHCP messages, while untrusted ports are allowed to send only DHCP requests and receive only valid DHCP replies from trusted ports 2 . DHCP snooping also builds a database of MAC addresses, IP addresses, lease times, and binding types for each client 2 .


NEW QUESTION # 103
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