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Prepare Juniper JN0-102 Exam Questions & Practice Tests, Juniper JNCIA-Junos Certification | SPOTO

SPOTO provides everything you need to excel on the Juniper Networks Certified Associate - Junos (JNCIA-Junos) exam. We offer a robust library of exam preparation materials, including practice tests, free sample questions, and a vast bank of online exam questions. Unlike shady exam dumps, SPOTO focuses on delivering high-quality exam questions and answers that represent the actual exam format. Our practice tests and mock exams are built using the latest information, allowing you to pinpoint your strengths and weaknesses. By leveraging these resources, you'll be well-prepared to tackle the JNCIA-Junos exam with confidence and unlock new opportunities in your networking career.
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Question #1
Which two protocols use UDP as a transport protocol by default? (Choose two.)
A. Telnet
B. ICMP
C. DHCP
D. RIP
View answer
Correct Answer: D
Question #2
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
View answer
Correct Answer: C
Question #3
Which command would you use to view interface usage details in real time?
A. show interfaces terse
B. show interfaces extensive
C. monitor interface trafficD
View answer
Correct Answer: D
Question #4
-- Exhibit -[editsnmp] user@router# show communityCommunityA { authorization read-only; clients { 192.168.1.0/28; } } trap-groupgroupA { categories { link; } targets { 192.168.100.1; 192.168.200.1; } } -- Exhibit -- Referring to the exhibit, what is the purpose of the targets section of the configuration?
A. It defines which devices will be sending traps
B. It specifies where to send traps
C. It defines the IP addresses of management systems that can access the device
D. It specifies which devices can be polled for SNMP data
View answer
Correct Answer: AC
Question #5
What represents the binary equivalence of 148?
A. 10010110
B. 11010010
C. 10011100
D. 10010100
View answer
Correct Answer: AB
Question #6
Which two commands is used to validate the syntax of a configuration without applying the configuration?
A. commit confirmed
B. commit synchronize
C. commit check
D. commit and-quit
View answer
Correct Answer: BC
Question #7
What information is used by a switch to forward an Ethernet frame to its destination?
A. IP address
B. destination MAC address
C. ARP table entry
D. FCS checksum
View answer
Correct Answer: C
Question #8
What are two valid actions for a routing policy? (Choose two.)
A. discard
B. next policy
C. accept
D. ignore
View answer
Correct Answer: BC
Question #9
Which two fields are found in an Ethernet frame header? (Choose two.)
A. TTL
B. flags
C. checksum
D. type
View answer
Correct Answer: AD
Question #10
Which two statements are true regarding trace options on Junos devices? (Choose two.)
A. You can see the contents of the log file by entering the show log command
B. Trace options will send information to your screen automatically
C. Trace options are limited to one protocol at a time
D. The file name and a set of flags may be specified when enabling traceoptions
View answer
Correct Answer: B
Question #11
-- Exhibit -- user@router> show system alarms 1 alarms currently active Alarm time Class Description 2013-09-14 23:54:01 UTC Minor Rescue configuration is not set - - Exhibit -- Which command will resolve the problem shown in the exhibit?
A. user@router> request system configuration rescue save
B. user@router# request system configuration rescue save
C. user@router> file copy current /config/rescue
D. user@router# file copy current /config/rescue
View answer
Correct Answer: C
Question #12
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: C
Question #13
Which two commands would you use to discard a candidate configuration? (Choose two.)
A. rollback
B. delete
C. delete 0
D. rollback 0
View answer
Correct Answer: AD
Question #14
A packet is evaluated against three user-defined terms within a firewall filter and no match is found. What correctly describes the action the firewall filter will take for this packet?
A. The filter will permit the packet and take no additional action
B. The filter will reject the packet and send an ICMP message back to the sender
C. The filter will discard the packet and take no additional action
D. The filter will permit the packet and write a log entry to the firewall log
View answer
Correct Answer: AC
Question #15
To which directory does the Junos OS write traceoptions files?
A. /var/tmp/
B. /var/
C. /var/log/
D. /var/home//
View answer
Correct Answer: D
Question #16
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 re-transmit
B. The device with the lowest MAC address is permitted to retransmit first
C. The device with the lowest MAC address sends a jam signal to notify all other devices of the collision
D. Both devices send a jam signal to notify all other devices of the collision
View answer
Correct Answer: D
Question #17
You have been asked to develop an application that uses only connection-oriented protocols. Which two protocols can you use? (Choose two.)
A. PPP
B. UDP
C. TCP
D. ICMP
View answer
Correct Answer: D
Question #18
Which two loopback types are supported for serial interfaces on Juniper devices? (Choose two.)
A. Local
B. Far End
C. Remote
D. Bidirectional
View answer
Correct Answer: C
Question #19
-- 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
View answer
Correct Answer: ABD
Question #20
After issuing the show interfaces terse command, you notice that the status of one interface is "up down". What does this indicate?
A. Layer 1 on the interface is up but Layer 2 is down
B. Layer 2 on the interface is up but Layer 3 has not been configured
C. The interface is administratively up but the link status is down
D. The interface is up but has been administratively turned off
View answer
Correct Answer: C
Question #21
Which statement is true regarding the password-recovery process?
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: C
Question #22
-- 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: D
Question #23
Which two statements are correct regarding default protocol preference values? (Choose two.)
A. RIP is preferred over OSPF external routes
B. Direct, local, and static routes have the same preference value
C. OSPF's preference value is lower than BGP
D. OSPF has a single preference value for both internal and external routes
View answer
Correct Answer: AD
Question #24
Which Junos release would address only bug fixes that were not contained in the 15.1R1 version of code?
A. 15
B. 15
C. 15
View answer
Correct Answer: AC
Question #25
Which information would you find using the CLI help function? (Choose two.)
A. message of the day
B. tip of the day
C. explanation for specific system log error messages
D. explanation for specific traceoptions log messages
View answer
Correct Answer: AC
Question #26
Which two statements about the Junos OS are true? (Choose two.)
A. It supports Java for automation on all platforms
B. It uses the same software source code base for all platforms
C. It uses a different software source code base for each platform
D. It supports XML for automation on all platforms
View answer
Correct Answer: C
Question #27
What represents the decimal equivalence of 01101110?
A. 90
B. 96
C. 110
D. 118
View answer
Correct Answer: A
Question #28
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
B. 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 #29
At which command prompt would you issue the set date command?
A. [edit chassis] user@router#
B. [edit] user@router#
C. [edit system] user@router#
D. user@router>
View answer
Correct Answer: AD
Question #30
What must you type to enter operational mode from the root@% command prompt?
A. exit
B. configure
C. edit
D. cli
View answer
Correct Answer: D
Question #31
-- 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: C
Question #32
You have been allocated a /22 network. How many usable hosts are available?
A. 510
B. 512
C. 1022
D. 1024
View answer
Correct Answer: AD
Question #33
What is the decimal equivalent of 10101010?
A. 182
B. 180
C. 172
D. 170
View answer
Correct Answer: ACD
Question #34
Which command displays the current temperature of a Junos device's components?
A. show chassis temperature-thresholds
B. show chassis environment
C. show chassis hardware
D. show chassis alarms
View answer
Correct Answer: A
Question #35
How many host addresses are available in the 172.27.0.0/28 network?
A. 6
B. 30
C. 28
D. 14
View answer
Correct Answer: AD
Question #36
Which three commands will cause a logical interface to go administratively down after being committed? (Choose three.)
A. shutdown
B. deactivate
C. disable
D. down
E. delete
View answer
Correct Answer: A
Question #37
-- 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: AD
Question #38
Which command causes the Junos OS temporarily activate a configuration?
A. commit check
B. commit synchronize
C. commit confirmed
D. commit and-quit
View answer
Correct Answer: B
Question #39
What are two examples of RE exception traffic? (Choose two.)
A. BGP updates that travel through the local router and are destined for a remote router
B. OSPF hello packets that are sent from a remote router and are destined for the local router
C. Telnet traffic that is sent from a remote host and is destined for the local router
D. Telnet traffic that travels through the local router and is destined for a remote end host
View answer
Correct Answer: BC

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