Juniper JNCIA JN0-102 Questions & Answers

• Question 21:

  Which two options are reasons for using traffic classification? (Choose two.)

  A. to use the classification to route traffic

  B. to use the classification to reorder packets from various sources

  C. to use the classification to discard malformed packets

  D. to use the classification to provide the configured service level

  Correct Answer: AD

• Question 22:

  Which of the following commands will configure the maximum transmission unit size of a fast Ethernet interface?

  A. set interfaces fe-0/0/0 unit 0 ethernet-options mtu 1200

  B. set interfaces fe-0/0/0 mtu 1200

  C. set interfaces fe-0/0/0 unit 0 mtu 1200

  D. set interfaces fe-0/0/0.0 mtu 1200

  Correct Answer: C

• Question 23:

  What are three characteristics of Layer 2 switches? (Choose three.)

  A. Layer 2 switches forward broadcast traffic.

  B. Layer 2 switches forward traffic addresses to hosts that reside on the same collision domain.

  C. Layer 2 switches separate multicast domains.

  D. Layer 2 switches separate collision domains.

  E. Layer 2 switches forward traffic addressed to hosts that reside on a different collision domain.

  Correct Answer: ABD

• Question 24:

  What information does the help topic command provide?

  A. router's version and serial number to help open a case with JTAC

  B. software documentation describing features and configuration tasks within JUNOS

  C. a brief description of commands and their default values

  D. a verification of the current configuration on the router

  Correct Answer: B

• Question 25:

  Which command will display the temperature of the Routing Engine's CPU?

  A. show chassis environment

  B. show chassis routing-engine

  C. show chassis temperatures

  D. show chassis status

  Correct Answer: B

• Question 26:

  Which three statements are true about IPv6 link local address? (Choose three.)

  A. They begin with the prefix fe80::/64.

  B. They are optional addresses.

  C. They provide reachability to the Internet.

  D. They are not guaranteed to the unique outside of the network segment.

  E. They can be assigned manually or dynamically.

  Correct Answer: ADE

• Question 27:

  -- Exhibit -[edit interfaces ge-0/0/1]

  user@router# show

  unit 100 {

  vlan-id 100;

  family inet {

  address 10.1.1.1 /24;

  }

  }

  [edit interfaces ge-0/0/1]

  user@router# commit check

  [edit interfaces ge-0/0/1]

  'unit 100'

  Only unit 0 is valid for this encapsulation

  error: configuration check-out failed

  -- Exhibit -Referring to the exhibit, you are unable to commit the configuration for the ge-0/0/1 interface.

  What must you do to commit the configuration?

  A. You must set the encapsulation vlan-ccc parameter under the [edit interfaces ge-0/0/1 unit 100] hierarchy.

  B. You must set the vlan-tagging parameter under the [edit interfaces ge-0/0/1] hierarchy.

  C. You must use the rename command to change unit 100 to unit 0.

  D. You must set the encapsulation flexible-ethernet-services parameter under the [edit interfaces ge-0/0/1] hierarchy.

  Correct Answer: B

• Question 28:

  Which command is a valid way to view the status of an interface?

  A. > show interfaces fe-0/0/0 extensive

  B. > show interfaces fe-0/0/0 status

  C. > show interfaces fe-0/0/0 health-info

  D. > show interfaces fe-0/0/0 verbose

  Correct Answer: A

• Question 29:

  Which statement is correct about the validate option when upgrading JUNOS software?

  A. It will check the MD5 checksum of the install package.

  B. It will check if the device meets the memory requirements for the install package.

  C. It will check the compatibility of the configuration with the install package.

  D. It will check if the device meets the storage requirement for the install package.

  Correct Answer: C

• Question 30:

  Which two protocols are connection-oriented? (Choose two.)

  A. Ethernet

  B. PPP

  C. TCP

  D. UDP

  Correct Answer: BC