Juniper JN0-102 Practice Tests & Real Exam Dumps 2024 Updated, Juniper JNCIA-Junos Certification

Question #1

What is an advantage of multiple software processes running in the Junos OS?

A. Each process has its own protected memory space

B. Each process is started manually by the user at boot

C. All processes are dependent on each other

D. Multiple processes allow each routing protocol to be independent

View answer

Correct Answer: A

Question #2

-- Exhibit -user@router> show configuration firewall familyinet { filter demo { term example { from { source- address { 100.100.100.0/24; } destination-address { 200.200.200.0/24; } } then { reject; } } term testing { from { source- address { 10.10.10.0/28; } destination-address { 200.200.200.0/24; } } then sample; } term results { from { address { 200.200.200.0/24; } } then accept; } term final { then policer LAPD; } } } -- Exhibit -- Given the configuration shown in the exhibit, what will happen to traffi

A. The traffic will be rejected

B. The traffic will be dropped

C. The traffic will be forwarded

D. The traffic will be policed

View answer

Correct Answer: C

Question #3

-- Exhibit -interfaces { ge-0/0/8 { unit 0 { family inet { address 192.168.1.1/24; } } } ge-0/0/9 { unit 0 { family inet { address 192.168.10.1/24; } } } } -- Exhibit -- Referring to the exhibit, which command would you use to add an additional address to the ge- 0/0/9.0 interface?

A. [edit interfaces ge-0/0/9 unit 0] user@router# set family inet address /24

B. [edit interfaces ge-0/0/9 unit 0] user@router# set family inet secondary-address /24

C. [edit interfaces ge-0/0/9 unit 0] user@router# set family inet address /24 secondary

D. [edit interfaces ge-0/0/9 unit 0] user@router# set family inet address- secondary /24

View answer

Correct Answer: A

Question #4

You are asked to free up disk space so you can update your version of the Junos OS. Which two commands display the files that will be removed? (Choose two.)

A. user@router> request system storage cleanup

B. user@router> show system storage

C. user@router> request system storage cleanup dry-run

D. user@router> show system storage detail

View answer

Correct Answer: AC

Question #5

Which route filter match type only matches prefixes greater than the defined prefix?

A. exact

B. upto

C. longer

D. orlonger

View answer

Correct Answer: C

Question #6

-- Exhibit -- Amnesiac (ttyu0) login: -- Exhibit -- Which statement is correct about the information shown in the exhibit?

A. The factory-default configuration is running on the device

B. The Junos OS was corrupted and did not boot correctly

C. The device was recently upgraded to a newer version of the Junos OS

D. The device's memory has been corrupted and no file system is present after a reboot

View answer

Correct Answer: A

Question #7

-- Exhibit -- [edit routing-options] user@router# show static { route 0.0.0.0/0 { next- hop 10.1.1.1; qualified-next- hop 10.1.1.254 { preference 4; } } } -- Exhibit -- Assuming both paths shown in the exhibit are available, which statement is correct?

A. Traffic matching the default route will use 10

B. Traffic matching the default route will use 10

C. Traffic matching the default route will be load-balanced per packet across both next hops

D. Traffic matching the default route will be load-balanced per flow across both next hops

View answer

Correct Answer: B

Question #8

-- Exhibit -- ... if-exceeding { bandwidth- limit 1m; burst-size-limit 3k; } then discard; -- Exhibit -- The configuration in the exhibit is associated with which class of service component?

A. classification

B. policing

C. queuing

D. scheduling

View answer

Correct Answer: B

Question #9

-- Exhibit -user@router> show route protocol static inet.0: 12 destinations, 12 routes (12 active, 0 holddown, 0 hidden) + = Active Route, - = Last Active, * = Both 192.168.1.0/24 *[Static/5] 00:03:13 >to 10.20.106.10 via fe-0/0/5.1 192.168.1.192/26 *[Static/5] 00:03:13 >to 10.20.14.131 via ge-0/0/0.0 192.168.1.192/27 *[Static/5] 00:03:13 >to 10.18.1.1 via ge-0/0/1.0 192.168.1.4/30 *[Static/5] 00:01:06 >to 10.20.14.130 via ge-0/0/0.0 -- Exhibit -- Using the routing table shown in the exhibit, what will be t

A. 10

B. 10

C. 10

D. 10

View answer

Correct Answer: D

Question #10

-- Exhibit -user@router> show route protocol static inet.0: 12 destinations, 12 routes (12 active, 0 holddown, 0 hidden) + = Active Route, - = Last Active, * = Both 192.168.1.128/27 *[Static/5] 00:03:13 >to 10.20.106.10 via fe-0/0/5.1 192.168.1.144/29 *[Static/5] 00:03:13 >to 10.20.14.131 via ge-0/0/0.0 192.168.1.192/27 *[Static/5] 00:03:13 >to 10.18.1.1 via ge-0/0/1.0 192.168.1.128/28 *[Static/5] 00:01:06 >to 10.20.14.130 via ge-0/0/0.0 -- Exhibit -- Given the routing entries shown in the exhibit, which ne

A. 10

B. 10

D. 10

View answer

Correct Answer: D

Question #11

When troubleshooting ATM, which command would allow you to test reachability from one side of an ATM cloud to the other?

A. ping atm vci 0

B. ping atm vci 0

C. ping atm vci 0

D. ping atm vci 0

View answer

Correct Answer: A

Question #12

-- Exhibit -firewall { filter select-telnet { term 1 { from { source-address { 10.0.0.0/8; } } then log; } term 2 { from { protocoltc p; port telnet; } then { syslog; reject; } } term 3 { from { source-address { 10.1.1.1/32; } protocoltcp; port telnet; } then { sample; accept; } } } } -- Exhibit -- A Telnet session is initiated from host 10.1.1.1. What will happen when it is processed by the firewall filter shown in the exhibit?

A. The packet will be accepted and logged

B. The packet will be discarded and logged

C. The packet will be rejected and a syslog message generated

D. The packet will be accepted and sampled

View answer

Correct Answer: A

Question #13

Which routing table stores IPv4 unicast routes and is used by multicast routing protocols to prevent loops?

A. inet

B. inet

C. inet

D. inet

View answer

Correct Answer: C

Question #14

-- Exhibit -- Exhibit -- You have been asked to establish reachability between Router 1's and Router 2's loopback addresses as shown in the exhibit. Which two steps will accomplish this task? (Choose two.)

A. Create a static route on Router 1 to 172

B. Create a static route on Router 1 to 172

C. Create a static route on Router 2 to 172

D. Create a static route on Router 1 to 172

View answer

Correct Answer: AC

Question #15

When you display the routing table by entering the show route command, what does the * indicate?

A. The route is a direct route

B. The route was selected as active

C. The route is a default route

D. The route was learned using a dynamic routing protocol

View answer

Correct Answer: B

Question #16

Which two statements are true regarding route preference? (Choose two.)

A. Lower preference values are more preferred than higher preference values

B. You can modify the default preference values for any of the routing information sources

C. By default, a static route is more preferred than a RIP route

D. A static route is always preferred over a direct route

View answer

Correct Answer: AC

Question #17

Which command displays only the interfaces that are operationally and administratively up?

A. show interfaces terse | match up

B. show interfaces terse | match down

C. show interfaces terse | except up

D. show interfaces terse | except down

View answer

Correct Answer: D

Question #18

Which two statements are true of login classes? (Choose two.)

A. Users can be members of multiple login classes

B. Login classes define authorization parameters for a user

C. There are five system-defined login classes

D. Login class permission flags can be overridden for certain commands

View answer

Correct Answer: BD

Question #19

Which two statements describe the forwarding table in the Junos OS? (Choose two.)

A. The forwarding table contains all known routes

B. The forwarding table stores a subset of information from the routing table

C. Junos devices use the forwarding table to compare incoming packets against existing entries to determine the next hop

D. If multiple matches exist, the forwarding table uses the least-specific entry to forward packets toward the destination

View answer

Correct Answer: BC

Question #20

What is the purpose of unicast reverse path forwarding?

A. to validate packet receipt on interfaces where the traffic should be received

B. to forward packets out the interfaces where the traffic should be received

C. to forward packets out the interfaces where the traffic should be sent

D. to validate packet receipt on interfaces where the traffic should be sent

View answer

Correct Answer: A

Question #21

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

View answer

Correct Answer: C

Question #22

What are the usable hosts on the .128.0/19 network?

A.

B.

C.

D.

View answer

Correct Answer: D

Question #23

-- Exhibit -traceroute to 10.1.15.2 (10.1.15.2), 30 hops max, 40 byte packets 1 10.1.36.1 (10.1.36.1) 0.651 ms 7.834 ms 0.506 ms 2 10.1.23.1 (10.1.23.1) 0.5 ms 0.5 ms 0.5 ms 3 * * * 4 * * * -- Exhibit -- Referring to the exhibit, which statement is correct?

A. The packets have exceeded the time-to-live value

B. There is a loop

C. The asterisks indicate a response time out

D. The asterisks indicate that the traceroute is completed

View answer

Correct Answer: C

Question #24

You are asked to change the cable on interface ge-0/2/1. Which statement is correct?

A. The cable is found on slot 2, port 0, and FPC 1

B. The cable is found on FPC 0, slot 1, and port 2

C. The cable is found on port 1, slot 0, and FPC 2

D. The cable is found on slot 2, port 1, and FPC 0

View answer

Correct Answer: D

Question #25

What are three advantages which dynamic routing protocols offer over static routing protocols? (Choose three.)

A. lower administrative overhead

B. increased network availability

C. greater network scalability

D. easier to implement qualified next hops

E. easier ECMP route implementation

View answer

Correct Answer: ABC

Question #26

-- Exhibit -user@router# run show interfaces terse Interface Admin Link Proto Local fe-0/0/0 up up fe-0/0/0.0 up upinet 10.0.39.2/24 iso mpls fe-0/0/1 up up fe-0/0/1.0 up upinet 10.0.18.2/24 fe-0/0/1.5 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. Check the physical cable

B. Issue the command activate interfaces fe-0/0/1

C. Issue the command delete interfaces fe-0/0/1

D. Reconfigure the IP address

View answer

Correct Answer: C

Question #27

Which two commands are used during the password recovery process? (Choose two.)

A. clear system login

B. boot -s

C. recovery

D. delete system root-authentication

View answer

Correct Answer: BC

Question #28

-- 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 vlan-tagging parameter under the [edit interfaces ge-0/0/1] hierarchy

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

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

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

View answer

Correct Answer: A

Question #29

-- Exhibit – -- Exhibit -- Which command produces the output shown in the exhibit?

A. show firewall counter telnet-counter filter select-telnet

B. show firewall log

C. show log messages

D. show services accounting usage

View answer

Correct Answer: B

Question #30

-- Exhibit -- [edit policy-options policy-statement my-policy] user@router# show term 1 { from { route-filter 192.168.0.0/16 prefix-length-range /20-/24; } then accept; } -- Exhibit -- Referring to the exhibit, which three networks match the policy? (Choose three.)

A. 192

B. 192

C. 192

D. 192

E. 192

View answer

Correct Answer: ADE

Question #31

Which statement is true regarding the Junos OS?

A. All platforms running the Junos OS separate the functions of learning and flooding

B. All platforms running the Junos OS separate the functions of control and forwarding

C. All platforms running the Junos OS separate the functions of routing and bridging

D. All platforms running the Junos OS separate the functions of management and routing

View answer

Correct Answer: B

Question #32

Which command displays the egress interfaces selected on the PFE for destination prefixes?

A. show route forwarding-table

B. show route table

C. show route table extensive

D. show pfefwdd

View answer

Correct Answer: A

Question #33

-- Exhibit -[edit class- of-service] user@router# show interfaces { ge-0/0/2 { unit 0 { classifiers { inet-precedence default; } } } } -- Exhibit -- Referring to the exhibit, which type of classifier is being used in this CoS configuration?

A. behavior aggregate

B. policer

C. multifield

D. forwarding policy

View answer

Correct Answer: A

Question #34

-- Exhibit -- user@router> show route inet.0: 9 destinations, 9 routes (9 active, 0 holddown, 0 hidden) + = Active Route, - = Last Active, * = Both 10.10.10.91/32 *[Direct/0] 00:09:40 >via lo0.0 10.10.10.92/32 *[OSPF/10] 00:01:50, metric 1 >to 172.16.1.2 via ge-0/0/2.0 100.100.1.0/24 *[Static/5] 00:01:50 Reject 172.16.1.0/24 *[Direct/0] 00:06:09 >via ge-0/0/2.0 172.16.1.1/32 *[Local/0] 00:06:09 Local via ge-0/0/2.0 192.168.0.0/16 *[Aggregate/130] 00:00:06 Reject 192.168.0.0/17 *[Aggregate/130] 00:00:06 >to

A. 192

B. 192

C. 192

D. 192

View answer

Correct Answer: C

Question #35

You have been asked to use a 28 bit subnet mask to segment the following network block: 108.12.5.0. How many usable hosts per sub-net could you create?

A. 10 hosts

B. 14 hosts

C. 12 hosts

D. 16 hosts

View answer

Correct Answer: B

Question #36

-- Exhibit -- user@router> show route inet.0: 9 destinations, 9 routes (9 active, 0 holddown, 0 hidden) + = Active Route, - = Last Active, * = Both 10.10.10.91/32 *[Direct/0] 00:09:40 >via lo0.0 10.10.10.92/32 *[OSPF/10] 00:01:50, metric 1 >to 172.16.1.2 via ge-0/0/2.0 100.100.1.0/24 *[Static/5] 00:01:50 Reject 172.16.1.0/24 *[Direct/0] 00:06:09 >via ge-0/0/2.0 172.16.1.1/32 *[Local/0] 00:06:09 Local via ge-0/0/2.0 192.168.0.0/16 *[Aggregate/130] 00:00:06 Reject 192.168.0.0/17 *[Aggregate/130] 00:00:06 >to

A. 192

B. 192

C. 192

D. 192

View answer

Correct Answer: B

Question #37

-- Exhibit -- user@router> restart ^ unknown command. -- Exhibit -- You are investigating routing problems on a device running the Junos OS. You receive the error shown in the exhibit when you attempt to restart the routing process. Which statement describes the problem?

A. You have typed an invalid command

B. You must be in configuration mode to restart the routing process

C. You do not have permission to restart the routing process

D. You must wait until close of business to restart the routing process, based on user-defined policy

View answer

Correct Answer: C

Question #38

-- Exhibit -- [edit policy-options] user@router# show policy-statementpolicyABC { term A { from { protocol rip; route-filter 192.168.1.0/24 longer; } then accept; } } [edit protocols ospf] user@router# show exportpolicyABC; area 0.0.0.0 { interface ge-0/0/0.0; interface lo0.0; } -- Exhibit -- Referring to the exhibit, which two statements are true? (Choose two.)

A. The route 192

B. The route 192

C. OSPF routes will be exported into RIP

D. RIP routes will be exported into OSPF

View answer

Correct Answer: AD

Question #39

Which command configures an address of 192.168.1.1 with a mask of 255.255.255.0 on interface ge-0/0/0?

A. set ip interface ge-0/0/0 address 192

B. set ip interface ge-0/0/0 address 192

C. set interface ge-0/0/0 ip4 address 192

D. setinterfaces ge-0/0/0 unit 0 family inet address 192

View answer

Correct Answer: D

Question #40

Referring to the exhibit, you are asked to rate-limit traffic from Web-Server to the subnet where Mal-User is located. All other traffic should be permitted. Which firewall filter configuration do you use?

A. [edit firewall] user@router# show policer LIMIT-MAL-USER { if-exceeding { bandwidth- limit 400k; burst-size-limit 100k; } then discard; } familyinet { filter STOP- MAL-USER { term one { from { source-address { 100

B. [edit firewall] user@router# show policer LIMIT-BAD-USER { if-exceeding { bandwidth- limit 400k; burst-size-limit 100k; } then discard; } familyinet { filter STOP- MAL-USER { term one { from { source-address { 100

C. [edit firewall] user@router# show policer LIMIT-MAL-USER { if-exceeding { bandwidth- limit 400k; burst-size-limit 100k; } then discard; } familyinet { filter STOP- MAL-USER { term one { from { source-address { 100

D. [edit firewall] user@router# show policer LIMIT-MAL-USER { if-exceeding { bandwidth- limit 400k; burst-size-limit 100k; } then discard; } familyinet { filter STOP- MAL-USER { term one { from { source-address { 200

View answer

Correct Answer: A

Question #41

Which CLI mode allows you to make configuration changes?

A. enable mode

B. configuration mode

C. operational mode

D. active mode

View answer

Correct Answer: B

Question #42

Referring to the exhibit, you want to block HTTP access to Web-Server from the subnet where Mal-User is located. All other traffic should be permitted. Which firewall filter configuration do you use?

A. [edit firewall family inet filter STOP-MAL-USER] user@router# show term one { from { source- address { 200

B. [edit firewall family inet filter STOP-MAL-USER] user@router# show term one { from { source- address { 100

C. [edit firewall family inet filter STOP-MAL- USER] user@router# show termone { from { source-address { 100

D. [edit firewall family inetfilter STOP-MAL-USER] user@router# show term one { from { source- address { 200

View answer

Correct Answer: D

Question #43

What is correct regarding the configuration shown below? static route 0.0.0.0/0 qualified-next-hop 172.30.25.1 preference 7 next-hop 172.30.25.5

A. The next-hop 172

B. The next-hop 172

C. The next-hop 172

D. The next-hop 172

View answer

Correct Answer: D

Question #44

-- Exhibit -- [edit policy-options policy-statement my-policy] user@router# show term reject { then reject; } term match { from { protocolbgp; route-filter 10.10.10.0/24 exact; } } -- Exhibit -- Referring to the exhibit, you must move the match term above the reject term. Which command would accomplish this task?

A. set term match from policy reject

B. up 1 copy policy-statement my-policy term match to term before-reject

C. activate term match to policy

D. insert term match before term reject

View answer

Correct Answer: D

Question #45

You are asked to change the cable on interface fe-4/2/3. Which statement is correct?

A. The cable is found on port 4, FPC 2, and slot 3

B. The cable is found on slot 2, port 3, and FPC 4

C. The cable is found on FPC 4, slot 3, and port 2

D. The cable is found on slot 2, FPC 3, and port 4

View answer

Correct Answer: B

Question #46

Which command gracefully shuts down the Junos OS?

A. request system reboot

B. request system logout

C. request system halt

D. restart gracefully

View answer

Correct Answer: C

Question #47

-- Exhibit -- [edit firewall family inet filter COS-CLASSIFIER] user@router# show term MANAGER { from { source- address { 192.168.200.0/25; } destination-address { 100.100.100.1/32; } } then { forwarding-class expedited- forwarding; accept; } } term ALL-OTHER-TRAFFIC { then accept; } [edit interfaces ge-0/0/1] user@router# show unit 0 { familyinet { filter { input COS-CLASSIFIER; } address 192.168.200.1/24; } } -- Exhibit -- Referring to the exhibit, which type of classifier is being used in this CoS config

A. behavior aggregate

B. policer

C. multifield

D. forwarding policy

View answer

Correct Answer: C

Question #48

Which two statements are true about firewall filter configurations? (Choose two.)

A. Multiple action modifiers can be included in the same term

B. Only a single action modifier can be included in the same term

C. If an action modifier exists without a terminating action, matching packets will be accepted

D. If an action modifier exists without a terminating action, matching packets will be discarded

View answer

Correct Answer: AC

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