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Juniper JN0-105 Practice Test - Questions Answers, Page 2

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Question 11

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Which two statements are correct about MAC addresses? (Choose two.)

Switches use the Address Resolution Protocol table to assign MAC addresses to network interface cards in the forwarding frame.
Switches use the Address Resolution Protocol table to assign MAC addresses to network interface cards in the forwarding frame.
The source and destination MAC addresses always remains static to the final destination.
The source and destination MAC addresses always remains static to the final destination.
The MAC address identifies the physical hardware.
The MAC address identifies the physical hardware.
Switches use the destination MAC address to identify the next-hop destination and to change the destination MAC address in the frame.
Switches use the destination MAC address to identify the next-hop destination and to change the destination MAC address in the frame.
Suggested answer: C, D
Explanation:

MAC (Media Access Control) addresses are unique identifiers assigned to network interfaces for communications at the data link layer of a network segment. MAC addresses are used to identify the physical hardware on a network. In the context of Ethernet switches, the destination MAC address in incoming frames is used to determine the appropriate output port for forwarding the frame towards its final destination. The switch does not change the destination MAC address; it uses the MAC address to make forwarding decisions within the local network segment.

asked 18/09/2024
Francesco Balducci
40 questions

Question 12

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How many login classes are assignable to a user account?

3
3
2
2
4
4
1
1
Suggested answer: D
Explanation:

https://www.juniper.net/documentation/us/en/software/junos/user-access-evo/user-access/topics/topic-map/junos-os-login-class.html#:~:text=You%20can%20define%20any%20number,to%20an%20individual%20user%20account.

In Junos OS, each user account can be assigned only one login class. Login classes in Junos OS define the permissions for users, controlling what they can access and modify within the system. This setup helps in maintaining a clear and secure access control mechanism.

Junos OS Documentation on User Accounts and Login Classes.

asked 18/09/2024
Nicholas Roy
52 questions

Question 13

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You are asked to view the real-time usage statistics for the busiest interfaces on a device running Junos OS.

Which command will achieve this task?

monitor traffic absolute-sequence
monitor traffic absolute-sequence
monitor interface traffic
monitor interface traffic
monitor traffic
monitor traffic
show interfaces extensive
show interfaces extensive
Suggested answer: B
Explanation:

To view real-time usage statistics for the busiest interfaces on a device running Junos OS, the correct command is B, 'monitor interface traffic.' This command provides a dynamic, real-time view of the traffic flowing through the interfaces, allowing administrators to quickly identify and monitor the busiest interfaces on the device.

asked 18/09/2024
Foo goo
47 questions

Question 14

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Which type of device uses the destination IP address to forward packets?

Layer 3 router
Layer 3 router
Layer 2 switch
Layer 2 switch
repeater
repeater
hub
hub
Suggested answer: A
Explanation:

A Layer 3 router forwards packets based on the destination IP address. It operates at the network layer of the OSI model and uses routing tables to determine the best path for packet delivery. Unlike Layer 2 switches, which forward packets based on MAC addresses, routers handle logical addressing, making them crucial for inter-network communication.

Junos OS Documentation on Routing Fundamentals.

asked 18/09/2024
Mustafa Hussien
48 questions

Question 15

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You have just increased the MTU size of interface ge-0/0/0 and committed the configuration.

Which command would help you identify the applied MTU change?

monitor interface ge-0/0/0
monitor interface ge-0/0/0
monitor traffic interface ge-0/0/0
monitor traffic interface ge-0/0/0
show interfaces ge-0/0/0 terse
show interfaces ge-0/0/0 terse
show interfaces ge-0/0/0
show interfaces ge-0/0/0
Suggested answer: D
Explanation:

After increasing the MTU size of an interface and committing the configuration, the command to verify the applied MTU change is D, 'show interfaces ge-0/0/0.' This command displays detailed information about the interface, including the current MTU size, making it the best choice for verifying the applied changes.

asked 18/09/2024
eswar raj
38 questions

Question 16

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When considering routing policies, which two statements are correct? (Choose two.)

Routing policies are applied to interfaces as input or export filters.
Routing policies are applied to interfaces as input or export filters.
An import routing policy for BGP determines which received prefix advertisements are placed in the routing information base.
An import routing policy for BGP determines which received prefix advertisements are placed in the routing information base.
Policy terms are evaluated from top to bottom with action taken on the first match found.
Policy terms are evaluated from top to bottom with action taken on the first match found.
Policy terms are evaluated from top to bottom with the most restrictive action taken of all the matching terms.
Policy terms are evaluated from top to bottom with the most restrictive action taken of all the matching terms.
Suggested answer: B, C
Explanation:

Routing policies in Junos OS are crucial for controlling route advertisements and path selection. The correct answers are B and C. An import routing policy for BGP determines which received prefix advertisements are placed in the routing information base (RIB), and policy terms are evaluated from top to bottom, with action taken on the first match found. This sequential evaluation allows for precise control over routing decisions.

asked 18/09/2024
Karol LigΓ„™za
37 questions

Question 17

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When considering routing tables and forwarding tables, which two statements are correct? (Choose two.)

The routing table is used by the RE to select the best route.
The routing table is used by the RE to select the best route.
The forwarding table stores all routes and prefixes from all protocols.
The forwarding table stores all routes and prefixes from all protocols.
The forwarding table is used by the RE to select the best route.
The forwarding table is used by the RE to select the best route.
The routing table stores all routes and prefixes from all protocols.
The routing table stores all routes and prefixes from all protocols.
Suggested answer: A, D
Explanation:

The routing table and forwarding table play distinct roles in a Junos OS device. The correct answers are A and D. The routing table (A) is used by the Routing Engine (RE) to select the best route among all the learned routes, while the routing table (D) stores all routes and prefixes learned from all routing protocols. The forwarding table, in contrast, contains only the active routes chosen by the RE and is used by the Packet Forwarding Engine for actual packet forwarding.

asked 18/09/2024
Muzammil Mirza
39 questions

Question 18

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What are two attributes of the UDP protocol? (Choose two.)

UDP is more reliable than TCP.
UDP is more reliable than TCP.
UDP is always slower than TCP.
UDP is always slower than TCP.
UDP is best effort.
UDP is best effort.
UDP is connectionless.
UDP is connectionless.
Suggested answer: C, D
Explanation:

UDP (User Datagram Protocol) is known for being connectionless (D) and providing best-effort delivery without the reliability mechanisms present in TCP (C). This means that UDP does not establish a connection before sending data and does not guarantee delivery, order, or error checking, making it faster but less reliable than TCP.

asked 18/09/2024
Bipindra Shrestha
45 questions

Question 19

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You are creating a new policy to accept and redistribute routes into your IGP.

In this scenario, which match criteria would you use to identify the route prefixes to select?

instance
instance
route-type
route-type
neighbor
neighbor
route-filter
route-filter
Suggested answer: D
Explanation:

When creating a new policy to accept and redistribute routes into your Interior Gateway Protocol (IGP), the route-filter match criteria is used to identify the route prefixes to select. The route-filter statement specifies which prefixes should be matched in a policy. This allows for precise control over which routes are accepted and redistributed, facilitating efficient and secure routing policies within the network.

'show | display set | match ge-0/0/2' indicating command examples and match criteria from Useful Juniper Commands.txt.

Juniper official documentation: Routing Policy and Firewall Filters Configuration Guide.

asked 18/09/2024
josh hill
41 questions

Question 20

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Which two addresses are included in an Ethernet frame header? (Choose two.)

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Total 100 questions
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