Junos, Associate (JNCIA-Junos) JN0-104 Study Guide [2022] To Prepare Well

Eleanor2022-03-30T03:45:22+00:00

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Great to all, JN0-104 Junos, Associate (JNCIA-Junos) exam can be prepared with the valid JN0-104 study guide online. As the baseline certification for high-level Juniper certifications, JNCIA-Junos provides a core understanding of the Juniper Networks core operating system. It contains 65 multiple-choice questions, which need to be completed in 90 minutes. JN0-104 study guide are based on the actual exam topics, which will help you prepare for Junos, Associate (JNCIA-Junos) JN0-104 exam well.

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1. Which operational command displays the routing table?

show routing-table

route print

display routes

show route

2. Which two statements describe the connection between control plane and the forwarding plane? Choose Two

No rate limiter is configured by default

A rate limiter is configured by default

Exception traffic is preferred over the control traffic during congestion

Control traffic is preferred over the exception traffic during congestion

3. What information does the help topic command provide?

a brief description of commands and their default values

usage guidelines for a topic or configuration statement

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

a verification of the current configuration on the router

4. What are three acceptable modifiers to a terminating action on a firewall filter? (Choose three.)

policer

count

log

discard

syslog

5. You are modifying the default route preference under the [edit protocols] hierarchy. In which two routing information sources can you change the default preference value? (Choose two)

BGP

local

OSPF

direct

6. What are two important steps when upgrading an SRX300 Series device? (Choose two.)

Verify that enough space exists to upload the software package.

Verify that the netconf protocol is enabled.

Clear all alarms.

Reboot the device.

7. Which source of routing information is preferred by default?

static

RIP

direct

BGP

8. Which command will completely turn off a Junos device?

request system halt

request chassis fpc offline

request system power-off

request system recover

9. 1. Referring to the exhibit, what will be the result?

The device will boot in single-user mode at the operational prompt.

The device will boot into single-user mode at the shell prompt.

The device will boot into multi-user mode at the shell prompt.

The device will boot in multi-user mode at the configuration prompt.

10. What represents the decimal equivalence 1100 00011111 11001001 11000101?

172.28.187.189

172.31.201.197

172.30.231.182

172.19.151.107

Page 2 of 10

11. What are three firewall filter terminating actions? (Choose three.)

discard

reject

log

drop

12. Which two statements are correct regarding the internal link between the control plane and forwarding plane? (Choose two.)

The internal link has a built-in rate limiter that is configurable.

The internal link rate limits exception traffic to protect the Routing Engine against denial-of-service attacks.

The internal link has a built-in rate limiter that is not configurable.

The internal link rate limits transient traffic to protect the Routing Engine against denial of service attacks.

13. Which two commands would you use to reset the candidate configuration to the active configuration? (Choose two.)

rollback 0

rollback 2

rollback 1

rollback

14. What is a characteristic of route preference?

It is the same as a route metric.

It must be assigned manually for each protocol.

A higher preference is better than a lower preference.

A lower preference is better than a higher preference.

15. Which two statements describe the default behavior for OSPF? (Choose two)

OSPF imports all routes into the inet4.0 routing table.

OSPF exports all static routes into the OSPF database.

OSPF imports all routes into the inet.O routing table.

OSPF does not export static routes into the OSPF database.

16. Which types of destinations are populated into the forwarding table?

Destinations that are only local to the system

Destinations that are active and passed from the routing table

Destinations that are not accepted by an import policy

Destinations that are user-defined only

17. Which statement is correct about the validate option when upgrading JUNOS software with the request system software add command?

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

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

It will check the MD5 checksum of the install package.

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

18. What are two functions of the PFE? (Choose two.)

to maintain the forwarding tables

to apply the class of service function

to forward transit traffic

to monitor the chassis

19. Referring to the exhibit, which command will change the 172.16.10.1/24 IP address to 172.16.100.1/24 IP address?

copy interfaces ge-0/0/2 unit 0 family inet address 172.16.10.1/24 to address 172.16.100.1/24

set interfaces ge-0/0/2 unit 0 family inet address 172.16.100.1/24

rename interfaces ge-0/0/2 unit 0 family inet address 172.16.10.1/24 to address 172.16.100.1/24

insert interface ge-0/0/2 unit 0 family inet address 172.16.10.1/24 before address 172.16.100.1/24

20. Which two of the following items does a scheduler map associate with each other? (Choose two.)

Scheduler

BA Classifier

Forwarding class

Rewrite rule

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21. Which command is used to replace a current configuration?

load replace

load patch

load override

load set

22. Which two features are implemented on the Packet Forwarding Engine? (Choose two.)

firewall filters

chassis management

class of service

routing protocol updates

23. Which of these commands can be used to discard changes made to candidate configuration? (Choose two)

delete 0

rollback 0

delete

rollback

24. Which two statements are true regarding interface properties? (Choose two.)

MTU and speed must be configured under the logical unit.

Physical parameters such as MTU, duplex mode, and speed are configured under the interface name.

IPv4 and IPv6 addresses are configured under the logical unit.

DLCI numbers, VPI/VCI values, and VLAN tags are physical parameters.

25. By default, which character indicates the UNIX shell prompt?

26. You need to access a server on a subnet 172.0.46.0/24. The next-hop router is 10.0.4.2/30. A static route on the gateway has been configured to accomplish the task.

You want to keep the static route from being redistributed into dynamic routing protocols.

Which command will satisfy this requirement?

set routing-options static route 172.0.46.0/24 next-hop 10.0.4.2/30 no-redistribute

set routing-options static route 172.0.46.0/24 next-hop 10.0.4.2/30 no-readvertise

set routing-options static route 172.0.46.0/24 next-hop 10.0.4.2/30 no-resolve

set routing-options static route 172.0.46.0/24 next-hop 10.0.4.2/30

27. Given the configuration shown below: set system authentication-order [tacplus] Which two statement are correct? (Choose two.)

If the TACACS+ server is no available, the user is not allowed to access the device.

If the TACACS+ server is no available, the local database is checked.

If the TACACS+ server is available, and rejects the username/password provided, the local password database is checked.

If the TACACS+ server is available, and rejects the username/password provided, the user is not allowed to access the device.

28. After logging in as a root user, which of these commands must be used to enter operational mode?

configure

enable

cli

edit

29. Which command allows you to view the raw packet data of interface ge-1/0/5?

monitor interface traffic ge-1/0/5

monitor traffic interface ge-1/0/5

show interface ge-1/0/5 media

show interface ge-1/0/5 extensive

30. Which feature must you enable prior to performing a unified in-service software upgrade?

graceful Routing Engine switchover (GRES)

Virtual Router Redundancy Protocol (VRRP)

graceful restart

Network Time Protocol (NTP)

Page 4 of 10

31. Click the Exhibit button.

Referring to the exhibit, which two statements are correct? (Choose two.)

The memory utilization is 28%

The memory utilization is 72%

The CPU kernel utilization is 1%

The 15 minute CPU load average is 99%

32. You are connected to your Junos device using an SSH connection to the txp0 interface. No other interfaces are currently configured and unreachable from your management network .

How would you reestablish communication with the device?

Establish a SSH connection to the loopback interface

Unplug the network cable and plug it back in

Power off and power on the device

Connect to the console of the device

33. Which account is used to access a Junos device in a factory-default configuration?

root

admin

lab

juniper

34. Which two statements are correct about the inet.0 routing table? (choose two.)

It is used for populating the Ethernet switching table.

It stores information learned from routing protocols and other sources.

It is used for populating the forwarding table.

It is used for populating the forwarding policy.

35. What is the maximum number of configurations, by default, that are recoverable using the rollback command?

100

36. What statement is true about the orlonger route-filter match type?

All routes within the specified prefix that are longer than the given prefix are considered a match

All routes within the specified prefix that are longer or equal to the given prefix up to a defined acceptable prefix length are considered a match

All routes within the specified prefix that are longer than the given prefix up to a defined acceptable prefix length are considered a match

All routes within the specified prefix that are longer or equal to the given prefix are considered a match

37. When a non-root user connects to a Junos device and successfully enters a username and password, they are immediately placed at which level?

UNIX shell

user-level CLI

configuration mode

operational mode

38. Which command is used to replace the current configuration?

load replace

load set

load patch

load override

39. What are three benefits of using a dynamic routing protocol? (Choose three.)

increased network security

decreased network latency

increased network availability

greater network scalability

lower administrative overhead

40. Routing policies contain which two types of statements? (Choose two.)

from

then

default

and

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41. Routing policies contain which two type of statements? (Choose two.)

and

from

default

then

42. What is the default location of the syslog file on Junos devices?

/var/log/

/var/tmp/

/var/home/

/var/db/

43. Which statement is correct regarding IPv6 addresses?

An IPv6 address consists of 128 bits separated into eight 16-bit hexadecimal sections.

An IPv6 address consists of 64 bits separated into four 16-bit hexadecimal sections.

An IPv6 address consists of 128 bits separated into sixteen 8-bit hexadecimal sections.

An IPv6 address consists of 64 bits separated into eight 8-bit hexadecimal sections.

44. What are three terminating actions for a firewall filter? (Choose three.)

reject

log

terminate

discard

45. Which of these commands can be used to view the active configuration?

user@router> show system commit

user@router> show system configuration

user@router# show

user@router> show configuration

46. What represents the decimal equivalence of 10100101?

127

165

47. Which TWO of the following are private IP addresses?

12.0.0.1

168.172.19.39

172.20.14.36

172.33.194.30

192.168.24.43

48. Referring to the exhibit,

what happens when ping packets are sent to management interface address of the local router?

The ping packets are silently discarded

An ICMP unreachable message is returned

The Ping packets are accepted

An ICMP redirect message is returned

49. What is a valid IPv6 address?

00:05:85:23:45:67

127.0.0.1

2001:0db8:3000:2215:0000:0000:aaaa:llll

49.0001.0192.0168.1001.00

50. Which three statements describe OSPF? (Choose three)

OSPF must operate between different autonomous system

OSPF calculates the best path to each destination

OSPF is a link-state IGP

OSPF uses areas to incorporate hierarchy and to allow for scalability

OSPF uses a distance-vector algorithm to calculate routing cost

Page 6 of 10

51. Which of these statements is true about logical units on Juniper Router interfaces?

A logical unit is always required.

Logical units are used only when a Layer 2 identifier is present such as VLA

Logical units are not required unless ATM or 802.1Q VLAN tagging is configured.

A logical unit of 0 is required when using a frame-relay DLC

52. What are the contents of a scheduler?

A scheduler contains parameters that describe how a queue should be serviced.

A scheduler contains traffic that is ready to be transmitted.

A scheduler contains forwarding classes that allow traffic to be forwarded.

A scheduler contains a map between the classification of a packet and its forwarding class.

53. Which two statements are true regarding dynamic routing? (Choose two.)

Participating devices dynamically learn routing information from each other

Dynamic routing requires more administrative overhead than static routing

Dynamic routing allows a device to automatically reroute traffic around a failure

Dynamic routing is used when absolute control of routing parameters is necessary

54. When using keyboard shortcuts, which keystroke combination allows users to erase a single word to the left of the cursor?

Ctrl + a

Ctrl + e

Ctrl + u

Ctrl + w

55. Which command displays the output shown in the exhibit?

show chassis temperature-thresholds

show chassis environment

show chassis hardware

show chassis alarms

56. What are three valid software release designations for the junos OS? (Choose three.)

57. Which statement is correct regarding the configuration shown in the exhibit?

When the ospf-trace file has created five files, it will stop logging additional information.

When the ospf-trace file reaches the 64 kB file size, it is renamed and begins a new file

the ospf-trace file will automatically replace any any existing trace file with the same name

Timestamp information will not be included for each line of ospf-trace output

58. How many usable host addresses are available in 181.74.94.235/21?

2048

2044

1024

2046

59. You are connected to your Junos device using an SSH connection to the fxp0 interface. No other interface are currently configured beyond their default setting. You commit a configuration that makes the fxp0 interface unreachable from your management network.

In this scenario, how would you re-establish communication with the device?

Unplug the network cable and plug it back in.

Power off and power on the device.

Establish an SSH connection to the loopback interface.

Connect to the console of the device.

60. Referring to the Exhibit,

What information is provided about the route to 192.168.47.0/24? Choose Two

There is a single active route to 192.168.47.0/24

There are two next-hops available to 192.168.47.0/24

There is a single next-hop available to 192.168.47.0/24

There are two active route to 192.168.47.0/24

Page 7 of 10

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

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

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

Static routes are defined at the [edit routing-instance] hierarchy

Static routes must have next hop defined

62. Click the Exhibit button.

Referring to the exhibit, what happens to a packet that has a destination address of 172.17.0.1?

The packet is forwarded to the next hop defined in the default route.

The packet is silently discarded.

The packet is rejected and an ICMP network unreachable message is sent to the source address.

The packet is forwarded to the next hop of the management network.

63. Which of these are valid match criteria for a firewall filter applied to a Layer 3 interface? (Choose three)

Session ID

protocol

MAC address

port

IP address

64. Exhibit:

Which statement is correct when traffic is received from 10.10.10.4?

The traffic is only rejected

The traffic is only accepted

The traffic is counted and accepted

The traffic is counted and rejected

65. Which command is used to load the rescue configuration?

load merge rescue

rollback rescue

rollback 0

load replace rescue

66. What is the last usable IP address in 200.10.10.0/26?

200.10.10.62

200.10.10.64

200.10.10.63

67. Which character in the Junos software CLI allows you to filter and manipulate command output?

question mark

pipe character

68. Which statement is true about the forwarding plane?

The forwarding plane is the intelligence of the platform.

The forwarding plane is based on an X86 architecture.

The forwarding plane maintains the routing tables, bridging table, and primary forwarding table.

The forwarding plane implements policers, stateless firewall filters, and class of service.

69. What is the decimal equivalent of 00000100?

70. Which of these commands can be used to gracefully shutdown the Junos OS?

request system reboot

request system halt

restart gracefully

request system logout

Page 8 of 10

71. Exhibit:

Referring to the exhibit, which command was issued to generate the output?

show chassis environment

show chassis routing-engine

show chassis fpc

show chassis hardware

72. You are asked to change the cable on interface fe-4/2/3.

Which statement is correct?

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

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

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

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

73. The monitor traffic command closely resembles which UNIX-based utility?

ps -x

passwd

ls -a-l

tcpdump

74. Which two commands are used during the password recovery process?

clear system login

boot -s

recovery

delete system root-authentication

75. Consider the host IP Address is - 192.168.100.60 and the network mask is - 255.255.255.224 (or /27).

Which of the following address represents the correct network address for the referenced host?

192.168.100.0

192.168.100.32

192.168.100.48

192.168.100.16

76. Exhibit:

Which statement is true about the command shown in the exhibit?

There needs to be a ; after top for the command to be accepted as a valid command.

Only top should be used, no other options are allowed on the same line.

The command shown in the exhibit would be accepted as a valid command.

If you replace top with up command, it becomes valid.

77. Which three attributes contribute to the reliability of TCP?

Choose three.

Port numbers

EXP bits

Sequence numbers

Acknowledgements

Timers

78. Click the Exhibit button.

***Exhibit is Missing***

Referring to the exhibit, how many received packets are classified as exception traffic?

20814681

14442602

12417

27824

79. Which statement is true about import routing policies?

Import policies evaluate routes in the inet.3 routing table.

Import policies evaluate routes as they are advertised to another router.

Import policies evaluate routes in the inet.0 routing table.

Import policies evaluate routes after they are received from another router.

80. Which of these authentication methods are NOT supported by Junos? (Choose two)

RADIUS

local user database

CHAP

TACACS+

PAP

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81. Exhibit:

Referring to the exhibit, which statement is true?

Traps are allowed from 10.21.15.180

Traps are sent to 10.21.15.180

Traps are sent to 10.21.15.16

Traps are allowed from 10.21.15.16

82. For the interface ge-1/2/3.4, what does "ge" represent?

SONET/SDH

Gigabit Ethernet

Aggregated Ethernet

GRE

83. How would you change the display so the display so that 40 lines will be displayed in the terminal program when you are logged into a Junos device?

Issue the set cli screen-length 40 command from configuration mode.

Set the display options in your terminal program.

Issue the set cli screen-length 40 command from operational mode.

Set the windows size of your terminal program.

84. Which layer of the TCP/IP model is tasked with delivering packets to the destination?

Network Layer

Application Layer

Internet Layer

Transport Layer

85. You have the policy configuration shown in the exhibit applied to a BGP peering. You determine that customer routes coming from the 10.1.1.0/24 network are being rejected

Which action should be used to correct the problem?

[edit policy-options policy-statement my-policy] user@router# copy term 2 to term 1

[edit policy-options policy-statement my-policy] user@router# rename term 1 to term 3

[edit policy-options policy-statement my-policy] user@router# copy term 2 to term 0

[edit policy-options policy-statement my-policy] user@router# insert term 2 before term 1

86. What is minimum configuration required for a Junos device to respond to SNMP requests?

set snmp community public authorization read only

set snmp public version v2

set snmp community public

set snmp trap-group public version v1

87. Which command prompt indicates that you are in operational mode?

user @ router &

user @ router #

user @ router $

user @ router >

88. Which of the following protocols uses both TCP and UDP?

FTP

SMTP

Telnet

DNS

89. What are three benefits of using IPv6?

IPv6 supports a greater level of security by integrating features that were optional add-ons in IPv4.

IPv6 reduces administrative overhead using stateless address autoconfiguration for hosts.

IPv6 eliminates the need for private to public NAT using a large address pool.

IPv6 provides backward compatibility with IPv4 using the Next Header field.

IPv6 represents large IP addresses using dotted decimal notation.

90. Choose the advantages that dynamic routing protocols offer over static routing protocols. (Choose three)

easier to implement qualified next hops

easier ECMP route implementation

increased network availability

lower administrative overhead

greater network scalability

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91. Which statement is true about PFEs?

A PFE receives microcode updates from the RE

A PFE receives layer 4 forwarding table updates from the RE

A PFE receives hardware status messages from the RE

A PFE receives environmental status messages from the RE

92. Which two ping command parameters would be used to troubleshoot MTU issues? (Choose two.)

ping <destination> do-not-fragment

ping <destination> rapid

ping <destination> verbose

ping <destination> size

93. Which operational command allows a user to view the exhaust temperatures of a Junos device?

show chassis state

file list alarm

show chassis alarms

show chassis environment

94. Which word starts a command to display the operational status of a Junos device?

put

set

show

get

95. Which two statements are true about the default behavior of Junos routing policies? (Choose two.)

Routing policies can export active and inactive routes.

Routing policies can export only active routes.

Routing policies control the flow of routing information going to and from the routing table.

Routing policies control the flow of routing information going to and from the forwarding table.

96. Referring to the exhibit, what does the number inside the square brackets represent?

local preference

metric

protocol reference number

route preference

97. Host A is communicating with Host B through a Layer 2 switch.

What is the highest layer that the switch will inspect the traffic in this scenario?

Data Link

Transport

Network

Session

98. You specify a regular expression for allow-commands with the commit synchronize command. You specify a regular expression for deny-commands with the commit command.

For a user assigned to such a login class, which of this is true?

The user wouldn't be able to issue any of the command.

The user would be able to issue both the commands - commit synchronize and commit.

The user would be able to issue the commit command but not the commit synchronize command.

The user would be able to issue the commit synchronize command but not the commit command.

99. How would you change the display so that 40 lines will be displayed in the terminal program when you are logged into a Junos device?

Issue the set cli screen-length 40 command from configuration mode

Set the display options in your terminal program

Set the window size of your terminal program

Issue the set cli screen-length 40 command from operational mode

100. Which two interfaces are considered physical interface? Choose TWO

Ge-0/0/0

Et-3/0/0:0.501

Et-7/1/4:0

Xe-10/2/1

Junos, Associate (JNCIA-Junos) JN0-104 Study Guide [2022] To Prepare Well