最新的JNCIA認證 JN0-100考試題庫

問題1

Which two external authentication methods are supported by the Junos OS for user authentication? (Choose two.)

A. TACACS+

B. RADIUS

C. KERBEROS

D. IPsec

正確答案: A,B

問題2

What are the usable hosts on the 96.6.128.0/19 network?

A. 96.6.128.0 through 96.6.134.254

B. 96.6.128.128 through 96.6.134.254

C. 96.6.128.1 through 96.6.159.254

D. 96.6.128.1 through 96.6.143.254

正確答案: C

問題3

Two devices on an Ethernet segment sent frames at the same time causing a collision.
Which two statements are true? (Choose two.)

A. Both devices stop transmitting, wait a random period of time, verify the wire is idle, and retransmit.

B. Both devices send a jam signal to notify all other devices of the collision.

C. The device with the lowest MAC address sends a jam signal to notify all other devices of the collision.

D. The device with the lowest MAC address is permitted to retransmit first.

正確答案: A,B

問題4

What information does the help reference command provide?

A. a brief description of commands and their default values

B. the serial number and version number of the device used to open a support case with JTAC

C. a display of the current configuration while in operational mode

D. a list of all the active hardware alarms on the device

正確答案: A

問題5

Which statement is true regarding the forwarding plane?

A. The forwarding plane is contained within the Routing Engine (RE).

B. The forwarding plane is not present on all platforms running the Junos OS.

C. The forwarding plane contains the Packet Forwarding Engine (PFE).

D. The forwarding plane processes and evaluates exception traffic.

正確答案: C

問題6

In the MAC address 00:90:69:9f:ea:46, what represents the Organizationally Unique Identifier (OUI)?

A. 9f:ea:46

B. 00:90:69

C. 69:9f:ea:46

D. 00:90:69:9f

正確答案: B

問題7

You have been asked to configure a login class that will permit its users to view and edit the configuration. The class should allow a user to view the entire configuration, but only to edit the interfaces, routing-options, and protocols hierarchies.
Which configuration accomplishes this login class?

A. permissions [ view-configuration clear network view ];
allow-configuration "(interfaces) | (routing-options) | (policy-options) | (protocols)";

B. permissions [ view-configuration clear network view ];
allow-commands "(configure)";

C. permissions [ clear network view ];
allow-commands "(configure)";
allow-configuration "(interfaces) | (routing-options) | (protocols)";

D. permissions [ view-configuration clear network view ];
allow-commands "(configure)";
allow-configuration "(interfaces) | (routing-options) | (protocols)";

正確答案: D

問題8

Which word starts a command to add configuration on a Junos device?

A. get

B. set

C. show

D. put

正確答案: B

問題9

Which J-Web tab do you use to add licenses to the device?

A. "Configure"

B. "Monitor"

C. "Troubleshoot"

D. "Maintain"

正確答案: D

問題10

-- Exhibit -
user@router# run show interfaces terse Interface Admin Link Proto Local fe-0/0/0 up up
fe-0/0/0.0 up up inet 10.0.39.2/24 iso mpls
fe-0/0/1 up up fe-0/0/1.0 up up inet 10.0.18.2/24 fe-0/0/1.513 down up inet 10.0.19.2/24 -- Exhibit -
An administrator is unable to ping any address on the 10.0.19.0/24 subnet. To identify the problem, the administrator uses the command shown in the exhibit.
Which step should be taken to solve the problem?

A. Reconfigure the IP address.

B. Check the physical cable.

C. Issue the command activate interfaces fe-0/0/1.513.

D. Issue the command delete interfaces fe-0/0/1.513 disable.

正確答案: D

問題11

Which statement is true about the routing table?

A. The routing table exists in the control plane only.

B. The routing table exists in the control plane and in the forwarding plane.

C. The routing table contains both active and inactive routes.

D. The routing table is stored on compact flash.

正確答案: A

問題12

When attempting to view the OSPF routes in the routing table, you issue the command show route table inet.3 but no OSPF routes are displayed.
What is the problem?

A. The OSPF routes are located in the inet.0 routing table.

B. The OSPF routes are located in the inet.2 routing table.

C. The OSPF routes are located in the inet4.3 routing table.

D. The OSPF routes are located in the inet4.0 routing table.

正確答案: A

問題13

What are three benefits of class of service? (Choose three.)

A. It can control congestion.

B. It can prioritize latency-sensitive traffic.

C. It can make a slow network faster.

D. It can eliminate congestion.

E. It can allocate bandwidth for different classes of traffic.

正確答案: A,B,E

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