Comprehensive Juniper JN0-102 Exam Test Questions & Answers, Juniper JNCIA-Junos Certification

Question #1

Which statement is correct about policies in the Junos OS? A. Export policies are used to filter routes from the RE forwarding table to the PFE forwarding table.

B. Export policies are used to filter routes destined for the routing table

C. Export policies are used to filter routes being sent to neighboring devices

D. Export policies are used to filter traffic leaving the device

View answer

Correct Answer: AD

Question #2

You issue the ping interface t1-1/1/0 bypass-routing count 1000 rapid command. Which statement is correct?

A. The count parameter creates a counter that you can view with the show firewall command

B. The count parameter allows the router to count the number of pings for logging purposes

C. The count parameter allows the router to pause for 1000 seconds before sending out a ping

D. The count parameter allows the router to send out 1000 pings and then stop

View answer

Correct Answer: AD

Question #3

You have configured a firewall filter with a single term matching on packets with a source address Real 58 Juniper JN0-102 Exam in the 10.0.0.0/24 subnet. This term only includes the count action. Which two statements are true about traffic evaluated by this firewall filter? (Choose two.) A. Packets within the 10.0.0.0/24 subnet will be accepted.

B. Packets within the 10

C. Packets within the 10

D. Packets within the 10

View answer

Correct Answer: B

Question #4

Which statement is true regarding syslog on Junos devices?

A. No logging is enabled by default

B. By default, the information is stored in a file named events

C. Only the message severity level must be configured

View answer

Correct Answer: ACD

Question #5

What are two Junos processes? (Choose two.)

A. OSPF SPF daemon (ospfd)

B. SNMP daemon (snmpd)

C. BGP daemon (bgpd)

D. Routing protocols daemon (rpd) Real 64 Juniper JN0-102 Exam

View answer

Correct Answer: D

Question #6

Which command do you use to display the messages seen during the last system boot?

A. show system boot-messages

B. show chassis messages

C. show file system boot-messages

D. show boot-log messages

View answer

Correct Answer: D

Question #7

Which command is used to display all output at once?

A. show interfaces | all Real 68 Juniper JN0-102 Exam

B. show interfaces | no-more

C. show interfaces | hold

D. show interfaces | display-all

View answer

Correct Answer: A

Question #8

Which command will display the active configuration?

A. user@router> show configuration

B. user@router# show

C. user@router> show system configuration

D. user@router> show system commit

View answer

Correct Answer: C

Question #9

Which two statements are true regarding routing tables? (Choose two.) A. The routing table is populated by the forwarding table.

B. Devices running the Junos OS can accommodate multiple routing tables

C. Information learned from routing protocols is stored in the routing table

D. The primary routing table for IPv4 unicast routes is inet

View answer

Correct Answer: AC

Question #10

Which command will allow you to quickly determine the administrative status of all interfaces on a Junos device? Real 85 Juniper JN0-102 Exam

A. show interfaces status

B. show interfaces summary

C. show interfaces terse

D. show interfaces admin

View answer

Correct Answer: A

Question #11

What does the command show | compare rollback 1 display?

A. the difference between the current candidate configuration and the candidate configuration from one commit ago

B. the difference between the current active configuration and the current candidate configuration

C. the difference between the current active configuration and the active configuration from one commit ago

D. the difference between the current candidate configuration and the archived configuration from one commit ago

View answer

Correct Answer: D

Question #12

Which two statements are true about static routes in the Junos OS? (Choose two.)

A. Static routes are defined at the [edit routing-instances] hierarchy

B. Static routes must have a next hop defined

C. Static routes remain in the routing table until you remove them or until they become inactive

D. Static routes are learned by neighboring devices and added to their routing tables

View answer

Correct Answer: B

Question #13

By default, which character indicates the configuration mode prompt?

A. #

B. >

C. $ D

View answer

Correct Answer: A

Question #14

Real 35 Juniper JN0-102 Exam 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: D

Question #15

-- Exhibit -- Real 52 Juniper JN0-102 Exam [edit policy-options policy-statement my-policy] user@router# show term 1 { from { route-filter 192.168.0.0/16 orlonger; } 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: C

Question #16

Which statement is true regarding the password-recovery process? Real 91 Juniper JN0-102 Exam A. You must have a console connection.

B. You cannot set the console port to an insecure mode

C. You must press the Enter key so that you can boot into single-user mode

D. When prompted to enter the full pathname of the shell, you must press the Enter key

View answer

Correct Answer: D

Question #17

-- 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? Real 56 Juniper JN0-102 Exam

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: A

Question #18

Which command will show the best paths that are installed in the PFE?

A. show route

B. show route active-path

C. show route private

D. show route forwarding-table

View answer

Correct Answer: AC

Question #19

Which statement is true regarding the forwarding plane?

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

B. The forwarding plane processes and evaluates exception traffic

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

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

View answer

Correct Answer: A

Question #20

-- Exhibit -- [edit interfaces ge-0/0/1] user@router# show unit 100 { vlan-id 100; familyinet { address /24; } } [edit interfaces ge-0/0/1] user@router# commit check [edit interfaces ge-0/0/1] Real 30 Juniper JN0-102 Exam '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 #21

Which CLI command do you use to determine which files are cleanup candidates? Real 90 Juniper JN0-102 Exam

A. request system storage cleanup candidates

B. request system services storage candidates

C. request system services candidate cleanup

D. request system storage cleanup dry-run

View answer

Correct Answer: D

Question #22

-- Exhibit -- [edit policy-options] user@router# show policy-statement block-routes { term 1 { Real 51 Juniper JN0-102 Exam from { route-filter 172.27.0.0/24 longer; } then reject; } term 2 { then accept; } } -- Exhibit -- You are asked to ensure that your device does not accept any prefixes within the 172.27.0.0/24 network. You have applied the policy shown in the exhibit, but the 172.27.0.0/24 route is still present on your device. Which configuration will resolve this problem?

A. [edit policy-options policy-statement block-routes]

B. user@router# set term 1 from route-filter 172

C. user@router# set term 1 from route-filter 172

D. user@router# set term 2 from route-filter 172

E. user@router# set term 2 from route-filter 172

View answer

Correct Answer: AC

Question #23

Real 49 Juniper JN0-102 Exam -- Exhibit -- policy-options { policy-statement example-pol { term 1 { from { protocol static; route-filter 10.1.0.0/16 exact; } then { preference 6; accept; } } term 2 { from { protocol static; route-filter 10.1.1.0/24 longer; } then { preference 7; accept; } } term 3 { from { protocol static; route-filter 10.1.0.0/16 upto /24; Real 50 Juniper JN0-102 Exam } then { preference 8; accept; } } term 4 { then accept; } } } -- Exhibit -- Referring to the exhibit, if the static route

A. The preference will be 6

B. The preference will be 7

C. The preference will be 8

D. The preference will be the default for static routes

View answer

Correct Answer: A

Question #24

Which source of routing information is preferred by default?

A. OSPF internal

B. OSPF external

C. IS-IS Level 1

D. IS-IS Level 2 Real 39 Juniper JN0-102 Exam

View answer

Correct Answer: BC

Question #25

You are at the top of the hierarchy and must configure OSPF on interface so-0/0/0 unit 100. Which two achieve this result? (Choose two.)

A. set protocols setospf area 0 set interface so-0/0/0

B. set protocols ospf area 0 interface so-0/0/0

C. edit protocols ospf interface so-0/0/0

D. edit protocols ospf area 0 set interface so-0/0/0

View answer

Correct Answer: A

Question #26

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

A. show route forwarding-table

B. show route table Real 43 Juniper JN0-102 Exam

C. show route table extensive

D. show pfefwdd

View answer

Correct Answer: BC

Question #27

Which command do you issue to upgrade the current software on Junos devices?

A. request system software replace

B. request system software install

C. request system software add D

View answer

Correct Answer: B

Question #28

-- Exhibit -- {master:0}[edit interfaces] user@switch# show me0 { disable; unit 0 { familyinet { address 10.1.1.10/24; } } } -- Exhibit -- Real 25 Juniper JN0-102 Exam Administrators report that they are unable to access the management interface of the EX Series device shown in the exhibit. Which command will resolve this problem?

A. delete me0 disable

B. activate me0

C. set me0 unit 0 enable

D. deactivate me0

View answer

Correct Answer: A

Question #29

Which word starts the command to remove configuration elements on a Junos device?

A. undo

B. remove

C. delete

D. unset

View answer

Correct Answer: A

Question #30

What are two default routing policies on Junos devices? (Choose two.)

A. The BGP import policy accepts all BGP routes

B. The BGP export policy rejects all active BGP routes

C. The OSPF import policy accepts all OSPF routes

D. The OSPF export policy accepts all active OSPF routes

View answer

Correct Answer: A

Question #31

During a password recovery, what is the next step after configuring the system to boot into single- user mode?

A. Reset the root password

B. Press the space bar

C. Type recovery

D. Press the "Enter" key

View answer

Correct Answer: A

Question #32

Which three user authentication methods are supported by the Junos OS? (Choose three.)

A. RADIUS B

C. local user database

D. TACACS+

E. PAP

View answer

Correct Answer: D

Question #33

Which statement is true regarding the Network Time Protocol (NTP) on Junos devices?

A. MD5 authentication is supported by the Junos OS

B. Server mode is not supported by the Junos OS

C. The Junos OS can provide a primary time reference

D. The Junos OS does not support the use of a boot server

View answer

Correct Answer: C

Question #34

What are three physical interface properties? (Choose three.)

A. payload scrambling

B. virtual circuit identifier

C. FCS

D. link speed

E. IP address

View answer

Correct Answer: A

Question #35

You issue the command telnet interface ge-1/1/0 10.10.10.1 source 192.168.100.1 bypass-routing. Which statement is correct?

A. The bypass-routing parameter is ignored when using private IP addressing

B. The telnet session will have the source IP address 10

C. The telnet session will connect to the neighboring device's interface ge-1/1/0

D. Return traffic for the telnet session might not arrive at interface ge-1/1/0

View answer

Correct Answer: A

Question #36

Using the command, user@router# load override latest.conf, where in the file system will the latest.conf be located?

A. /var/home/user/

B. /var/config/saved/ Real 73 Juniper JN0-102 Exam

C. /var/tmp/

D. /config/

View answer

Correct Answer: A

Question #37

Which two statements are true regarding the role of the Routing Engine (RE)? (Choose two.)

A. The RE controls and monitors the chassis

B. The RE manages the Packet Forwarding Engine (PFE)

C. The RE receives a copy of the forwarding table from the forwarding plane

D. The RE implements class of service (COS)

View answer

Correct Answer: D

Question #38

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? Real 80 Juniper JN0-102 Exam

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

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

View answer

Correct Answer: A

Question #39

By default, which character indicates the UNIX shell prompt?

A. #

B. >

C. $

D. % Real 67 Juniper JN0-102 Exam

View answer

Correct Answer: C

Question #40

Which two external authentication servers are supported for administrative access to a Junos device? (Choose two.)

A. RADIUS

B. LDAP

C. ACE Real 27 Juniper JN0-102 Exam

D. TACACS+

View answer

Correct Answer: D

Question #41

Which two statements apply when a user has entered private configuration mode by typing configure private? (Choose two.) Real 71 Juniper JN0-102 Exam

A. All users have their own active configuration

B. All users have their own private candidate configuration

C. When a user commits, all nonconflicting changes made by all users are committed

D. When a user commits, only the user's own changes are committed

View answer

Correct Answer: D

Question #42

-- Exhibit -- [edit interfaces ge-0/0/6] user@router# show { familyinet { address 172.16.10.100/24; address 172.16.10.101/24; } Real 36 Juniper JN0-102 Exam } -- Exhibit -- You have two IP addresses configured on the ge-0/0/6 interface, as shown in the exhibit. You want to select the 172.16.10.101 address as the source address for packets sent from this interface to hosts on a remote subnet. Which parameter would you add to the 172.16.10.101 address to complete this task? A. preferred

B. broadcast

C. primary

D. arp 172

View answer

Correct Answer: C

Question #43

Which command will save the current active configuration as the rescue configuration?

A. user@router# save | rescue

B. user@router> request system configuration rescue save

C. user@router# save rescue configuration

D. user@router> file save rescue-configuration

View answer

Correct Answer: D

Question #44

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: BD

Question #45

Which command will drop a matching packet and send out a notification message? A. set routing-options static route 10.1.1.1/32 no-retain

B. set routing-options static route 10

C. set routing-options static route 10

D. set routing-options static route 10

View answer

Correct Answer: B

Question #46

Which three statements are true regarding the candidate configuration? (Choose three.)

A. The candidate configuration is a temporary configuration that might become the active configuration

B. A candidate configuration is initially populated with the configuration currently active on the system

C. Changes to the candidate configuration take effect immediately

D. The candidate configuration becomes the active configuration after a system reboot

E. The configure private command allows concurrent editing of a candidate configuration by multiple users

View answer

Correct Answer: D

Question #47

-- Exhibit -- [edit firewall family inet filter input-filter] user@router# show term my-policy { from { source-address { 151.43.62.0/24; } } then { count; } } term else { then { discard; } } -- Exhibit -- Which two tasks are accomplished by the firewall filter shown in the exhibit? (Choose two.)

A. Traffic matching the my-policy term will be counted and accepted

B. Traffic matching the my-policy term will be counted and discarded

C. Traffic not matching the my-policy term will be discarded

View answer

Correct Answer: A

Question #48

You must apply the family inet configuration parameter only to Gigabit Ethernet interfaces that are in FPC 2. Which output applies to this configuration?

A. [edit groups] user@router# show ge-int { interfaces { { unit 0 { familyinet; } } } }

B. [edit groups] user@router# show ge-int { interfaces { <*> { unit 0 { familyinet; } } } }

C. [edit groups] user@router# show ge-int { interfaces { <*-2/*/*> { unit 0 { Real 29 Juniper JN0-102 Exam familyinet; } } } }

D. [edit groups] user@router# show ge-int { interfaces { { unit 0 { familyinet; } } } }

View answer

Correct Answer: A

Question #49

You are asked to change the cable on interface ge-2/1/3. Which statement is correct?

A. The cable is found on FPC 1, slot 3, and port 2

C. The cable is found on port 3, FPC 2, and slot 1

D. The cable is found on FPC 1, slot 2, and port 3

View answer

Correct Answer: AC

Question #50

What is the default action for firewall filters?

A. accept

B. reject

C. discard

D. log

View answer

Correct Answer: BDE

Question #51

You are asked to change the cable on interface fe-4/2/3. Real 22 Juniper JN0-102 Exam 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: C

Question #52

Which two commands may be used when configuring an IP address for a Gigabit Ethernet interface? (Choose two.)

A. set interfaces ge-0/0/0

C. set interfaces ge-0/0/0 unit 0 family inet address 10

D. set interfaces ge-0/0/0 address 10

View answer

Correct Answer: D

Question #53

You are asked to configure real-time performance monitoring (RPM) between two Junos devices to track traffic in your network. Which two application traffic types can you track? (Choose two.)

A. ICMP

B. SNMP Real 34 Juniper JN0-102 Exam

C. TCP

D. HTTPS

View answer

Correct Answer: A

Question #54

-- Exhibit -- [edit system syslog] user@router# show host 152.170.10.10 { any warning; } Real 26 Juniper JN0-102 Exam file changes { change-log info; } -- Exhibit -- Referring to the exhibit, which two statements are true? (Choose two.)

A. Any warning message will be sent to the 152

B. A warning message will be logged when the 152

C. Changes to the device's internal temperatures will be logged

D. Changes to the configuration will be logged

View answer

Correct Answer: C

Question #55

What are two functions of the RE? (Choose two).

A. to maintain routing tables

B. to forward traffic toward its destination

C. to manage the PFE D

View answer

Correct Answer: B

Question #56

Which command do you use to identify the meaning of a syslog message?

A. help log messages Real 69 Juniper JN0-102 Exam

B. man log messages

C. man syslog

D. help syslog

View answer

Correct Answer: D

Question #57

Which two statements are true about firewall filter configurations? (Choose two.) Real 57 Juniper JN0-102 Exam 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. The default term within a firewall filter uses the discard action

D. The default term within a firewall filter uses the reject action

View answer

Correct Answer: AC

Question #58

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: BC

Question #59

A network administrator would like to view detailed interface status, properties, statistics, errors, and CoS packet counters. Which operational command will display this information?

A. show interfaces extensive B

C. show configuration interfaces

D. show interface status

View answer

Correct Answer: C

Question #60

You accidentally configured interface so-0/0/0.0 with /32 instead of /30. Which two solutions could you use to correct this configuration? (Choose two.)

A. [edit interfaces so-0/0/0

B. [edit interfaces so-0/0/0

C. [edit] user@router# replace interface so-0/0/0

D. [edit interfaces so-0/0/0

View answer

Correct Answer: A

Question #61

To which directory does the Junos OS write traceoptions files?

A. /var/tmp/ Real 32 Juniper JN0-102 Exam

B. /var/

C. /var/log/

D. /var/home//

View answer

Correct Answer: B

Question #62

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: BC

Question #63

Which command will silently drop a matching packet? Real 42 Juniper JN0-102 Exam

A. set routing-options static route 10

B. set routing-options static route 10

C. set routing-options static route 10

D. set routing-options static route 10

View answer

Correct Answer: BC

Question #64

How do you save the current candidate configuration in the set format to permanent storage media? A. [edit] user@router# show | set | save /var/tmp/current.conf

B. [edit] user@router# show | compare set | save /var/tmp/current

C. [edit] user@router# save /var/tmp/current

D. [edit] user@router# show | display set | save /var/tmp/current

View answer

Correct Answer: BC

Question #65

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: ADE

Question #66

-- Exhibit -- [edit] user@router# show | compare [edit protocols ospf area 0.0.0.0] - interface ge-0/0/0.0 { - disable; - } [edit protocols ospf] area 0.0.0.0 { ... } + area 0.0.0.1 { + interface ge-0/0/0.0; + } Real 19 Juniper JN0-102 Exam -- Exhibit -- Referring to the exhibit, what are two differences between the active and candidate configurations? (Choose two.)

A. The ge-0/0/0 interface was added to the candidate configuration

B. Area 0 was added to the active configuration

C. Area 1 was added to the candidate configuration

D. The ge-0/0/0 interface was added to the active configuration

View answer

Correct Answer: AD

Question #67

Which statement is true regarding the Junos OS?

A. All platforms running the Junos OS use the same source code base

B. All platforms running the Junos OS use the same PFE

C. All platforms running the Junos OS use a hard drive to optimize syslog data storage

View answer

Correct Answer: B

Question #68

-- 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 -- Real 55 Juniper JN0-102 Exam 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: C

Question #69

The authentication order configuration on your M120 includes the settings tacplus and radius (in that order), but does not include the password parameter. You attempt to log in to the device, but the network containing the authentication servers is currently down. Which statement is true about your login attempt?

A. The login attempt is rejected

B. The login attempt is automatically accepted after the authentication servers' timeout value is reached, since there are no other authentication methods available

C. The M120 automatically tries authenticating locally on the device after the authentication servers' timeout value is reached

D. The M120 automatically tries authenticating locally on the device before using external authentication

View answer

Correct Answer: A

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