Q1
What is the maximum number of configurations, by default, that are recoverable using the rollback
command?
A. 50
B. 75
C. 100
D. 25
Answer: A
Q2
Click the Exhibit button
You are connecting to a new device in your network and are presented with the information and
prompt shown in the exhibit Which three steps must be carried out to edit the configuration on this
device? (Choose three.)
A. Log in using the root user with the root 123 password.
B. Type cli at the > prompt
C. Log in using the root user with no password.
D. Type cli at the = prompt
E. Type configure at the > prompt.
Answer: C,E
Q3
Which parameter would you use to prohibit the redistribution of a static route used for management
traffic?
A. reject
B. passive
C. no-readvertise
D. discard
Answer: C
Q4
Exhibit:
Which statement is true about the command shown in the exhibit?
A. Only top should be used, no other options are allowed on the same line.
B. If you replace top with up command, it becomes valid.
C. There needs to be a ; after top for the command to be accepted as a valid command.
D. The command shown in the exhibit would be accepted as a valid command.
Answer: D
Q5
What are three interface prefixes for a 40-gigabit interface? (Choose three.)
A. es
B. xe
C. et
D. fte
E. xle
Answer: A,C,E
Q6
Depending on the device type, Junos is built upon which two OS kernels? (Choose two.)
A. FreeBSD
B. Linux
C. NetBSD
D. OpenBSD
Answer: A,B
Q7
Which two interfaces are considered physical interface? Choose TWO
A. Xe-10/2/1
B. Et-7/1/4:0
C. Ge-0/0/0
D. Et-3/0/0:0.501
Answer: A,C
Q8
Which command is used to load the rescue configuration?
A. load merge rescue
B. rollback rescue
C. rollback 0
D. load replace rescue
Answer: B
Q9
Referring to the exhibit, which dynamic routing protocol would be used for this topology?
A. RIPng
B. RIP
C. OSPFv2
D. IGMPv3
Answer: A
D. The command shown in the exhibit would be accepted as a valid command.
Answer: D
Q10
What is the default firewall filter behavior when a term is matched but no terminating action is
specified?
A. an implicit accept and the filter evaluation terminates
B. an implicit deny and the filter evaluation continues to the next term
C. an implicit deny and the filter evaluation terminates
D. an implicit accept and the filter evaluation continues to the next term
Answer: D
Q11
Which command displays the output shown in the exhibit?
A. show chassis environment
B. show chassis temperature-thresholds
C. show chassis alarms
D. show chassis hardware
Answer: B
Q12
Which CIDR notation is the equivalent of the subnet mask of 255.255.192.0?
A. /20
B. /18
C. /19
D. /17
Answer: B
Q13
Referring to the exhibit, what information is provided about the route to 192.168.47.0/24? (Choose
two.)
A. There are two active routes to 192.168.47.0/24.
B. There is a single next hop available to 192.168.47.0/24.
C. There is a single active route to 192.168.47.0/24.
D. There are two next hops available to 192.168.47.0/24.
Answer: C,D
Q14
While working on a Junos device, you receive the message shown in the exhibit.
In
this scenario, what should you do to stop the shutdown process?
A. Issue the request system halt in 0 command
B. Issue the request system power-off in 0 command
C. Issue the clear system reboot command
D. Issue the clear system commit command
Answer: C
Q15
Which two keystrokes are used to auto-complete commands? (Choose two.)
A. End
B. Tab
C. Spacebar
D. Esc
Answer: B,C
Q16
Which two parameters are considered action modifiers in the firewall filters then statement?
(Choose two.)
A. policer
B. counter
C. reject
D. next term
Answer: C,D
Q17
You have entered the command "show log messages | match "error | kernel | panic" which
statement is correct regarding the keywords error, kernel and panic in the output?
A. the output messages will contain all messages from the file that contains at least one of the three
defined keywords
B. the output messages will contain all messages from the file except the ones that contains at least
one of the three defined keywords
C. the output messages will contain all messages from the file except the ones that contain all three
defined keywords.
D. the output messages will contain all messages from the file that contains all three defined
Keywords
Answer: D
Q18
Which command produced the output shown in the exhibit?
A. Show interfaces extensive
B. Show interfaces terse
C. Show interfaces filters
D. Show interfaces summary
Answer: B
Q19
What are three firewall filter terminating actions? (Choose three.)
A. discard
B. accept
C. log
D. drop
E. reject
Answer: A,D,E
Q20
What is the network ID address of the IPv4 subnet that includes the IP address 114.180.192.120/28?
A. 114.180.192.106/28
B. 114.180.192.100/28
C. 114.180.192.112/28
D. 114.180.192.118/28
Answer: C
Q21
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?
A. Set the window size of your terminal program.
B. Issue the set cli screen-length 40 command from operational mode.
C. Issue the set cli screen-length 40 command from configuration mode
D. Set the display options in your terminal program.
Answer: B
Q22
You are performing the initial configuration of an SRX Series device.
What must you set before the device will allow you to commit your configuration?
A. root authentication
B. system time
C. management interface
D. hostname
Answer: A
Q23
Your firewall filters are not in the correct order, what would solve this problem?
A. Use the commit parameter to ensure that terms are evaluated correctly
B. Use the next-term action to force an evaluation of the next-term
C. Use the reject action to change the action of the filter
D. Use the filter command to reorder the terms with the filter
Answer: D
Q24
User 1 pings Router C to determine its status.
Which router shown in the exhibit, treats the traffic generated by the ping command as exception
traffic?
A. Router C
B. Router B
C. Router D
D. Router A
Answer: C
Q25
How does the PFE determine how to forward transit traffic?
A. The PFE uses the following table provided by the RE.
B. The PFE determines network destinations itself based on the RE's routing table.
C. The PFE performs a destination lookup based on its own routing table.
D. The PFE uses the routing table provided by the RE.
Answer: A
Q26
You must apply the policy shown in the exhibit to readvertise BGP routes to OSPF neighbors Which
action will accomplish this task?
A. You must apply the policy as an import policy within the BGP configuration
B. You must apply the policy as an import policy within the OSPF configuration.
C. You must apply the policy as an export policy within the BGP configuration
D. You must apply the policy as an export policy within the OSPF configuration
Answer: D
Q27
Which keystrokes are used to auto-complete user-defined variables?
A. Home
B. Tab CC
C. End
D. Spacebar
Answer: B
Q28
Which three benefits are made possible by the separation of the control plane and forwarding plane
of a Junos device? (Choose three.)
A. nonstop active routing
B. in-service software upgrades
C. graceful Routing Engine switchover
D. stateful firewall
E. deep packet inspection
Answer: A,B,C
Q29
What is minimum configuration required for a Junos device to respond to SNMP requests?
A. set snmp community public authorization read only
B. set snmp public version v2
C. set snmp community public
D. set snmp trap-group public version v1
Answer: C
Q30
Which two statements describe PFE functions are true?
A. The PFE provides access to the CLI and Jweb
B. The PFE stores the master copy of the layer 2 and layer 3 forwarding tables
C. The PFE implements rate limiting using policers
D. The PFE stores a local copy of the layer 2 and layer 3 forwarding tables
Answer: C,D
Q31
Which two conditions must exist in a Junos device for traffic to transit the device to a specific
destination?
(Choose two.)
A. A forwarding table entry for that destination must exist.
B. A routing policy must be in place on the device.
C. A routing table entry for that destination must exist.
D. A firewall filter must exist to allow traffic to reach that destination.
Answer: A,C
Q32
Which protocol family is required prior to assigning an IP address to an interface?
A. ip6
B. ip
C. inet4
D. inet
Answer: D
Q33
What statement is true about the orlonger route-filter match type?
A. 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
B. All routes within the specified prefix that are longer than the given prefix are considered a match
C. All routes within the specified prefix that are longer than the given prefix up to a defined
acceptable prefix length are considered a match
D. All routes within the specified prefix that are longer or equal to the given prefix are considered a
match
Answer: B
Q34
Which two interfaces are considered as physical interface? (Choose two.)
A. xe-1/1/1
B. ae1.1
C. et-5/0/0
D. ge-2/0/2.0
Answer: A,D
Q35
The PFE receives which two tables from the RE? (Choose two.)
A. Layer 5 forwarding table
B. Laver 4 forwardina table
C. Layer 2 forwarding table
D. Layer 3 forwarding table
Answer: C,D
Q36
What would you use as a network tool to open a secure terminal connection from a device running
Junos OS to another device?
A. telnet
B. HTTPS
C. SSH
D. RDP
Answer: C
Q37
Which keystroke combination allows users to move the cursor to the beginning of the command line
without deleting text?
A. Ctrl + a
B. Ctrl + w
C. Ctrl + u
D. Ctrl + b
Answer: A
Q38
Referring to the exhibit,
which command will cause this event message?
A. request system commit
B. request system recover
C. request system halt
D. request system logout
Answer: C
Q39
By default, which Junos directory contains the primary syslog file?
A. /var/syslog
B. /var/log
C. /var/home
D. /var/tmp
Answer: B
Q40
You notice that the terms in your firewall filter are not in the correct order. What would solve this
problem?
A. Use the count parameter to ensure that the terms are evaluated correctly.
B. Use the insert command to reorder the terms within the filter.
C. Use the next term action to force an evaluation of the next term.
D. Use the reject action to change the action of the filter.
Answer: B
Q41
You have configuration groups applied on your router.
Which command would you use to see all components of the interface hierarchy?
A. show configuration interfaces | display detail
B. show configuration interfaces | display inheritance
C. show configuration interfaces | display changed
D. show configuration interfaces | display set
Answer: B
Q42
How many IP addresses can be configured on a given interface?
A. one primary and multiple secondary
B. one
C. as many as you want
D. one primary and one secondary
Answer: C
Q43
Which IP protocol number is assigned to TCP?
A. 4
B. 18
C. 17
D. 6
Answer: D
Q44
What information would you find using the CLI help function? (Choose two.)
A. Junos technical publications
B. explanation of traceoption events
C. tip of the day
D. explanation of specific system log error messages
Answer: C,D
Q45
In your configuration, an interface contains multiple IP addresses belonging to the same subnet. You
want to identify the IP address to use for packets sent to hosts on the same subnet. Which
parameter would you use to accomplish this task?
A. relative
B. primary
C. patch
D. preferred
Answer: D
Q46
Referring to the exhibit, what will happen to traffic that is less than the bandwidth limit from source
address
1.0.0.207
A. The traffic will be accepted by term 2.
B. The traffic will be accepted by term 1.
C. The traffic will be discarded by the policer.
D. The traffic will be discarded by term 1.
Answer: B
Q47
Which statement about the Junos OS forwarding table is correct?
A. The forwarding table is only stored on the Routing Engine.
B. The forwarding table is responsible for identifying and selecting active routes.
C. The forwarding table consolidates routes from multiple sources.
D. The forwarding table is populated with active routes from the routing table
Answer: D
Q48
Which two keystrokes will auto-complete a command? (Choose two.)
A. End
B. Tab
C. Spacebar
D. Esc
Answer: B,C
Q49
You are capturing logs to troubleshoot an issue with IS-IS; however, the logs are increasing in size too
quickly.
Referring to the exhibit, which configuration statement would solve this problem?
A. delete protocols isis traceoptions flag normal
B. delete protocols isis traceoptions file is-is-logs.log
C. set protocols isis traceoptions file files 10
D. set protocols isis traceoptions flag hello detail
Answer: D
Q50
Refer to Exhibit:
Which parameter at the end of the command would provide information for troubleshooting
pusposes?
A. Print-ascii
B. No-timestamp
C. No-resolve
D. Extensive
Answer: D
Q51
Which statement regarding transit traffic processing is correct?
A. Transit traffic is only processed by the control plane.
B. Transit traffic is not processed by the local device.
C. Transit traffic is only processed by the forwarding plane
D. Transit traffic is processed by both the control plane and forwarding plane.
Answer: C
Q52
Click the Exhibit button.
***Exhibit is Missing***
Referring to the exhibit, how many received packets are classified as exception traffic?
A. 20814681
B. 12417
C. 14442602
D. 27824
Answer: C
Q53
The marketing team needs access to a server on subnet 172.0.46.0/24. The next- hop router is
10.0.4.2/30. A static route on their 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?
A. set routing-options static route 172.0.46.0/24 next-hop 10.0.4.2/30
B. set routing-options static route 172.0.46.0/24 next-hop 10.0.4.2/30 no-redistribute
C. set routing-options static route 172.0.46.0/24 next-hop 10.0.4.2/30 no-resolve
D. set routing-options static route 172.0.46.0/24 next-hop 10.0.4.2/30 no readvertise
Answer: A
Q54
You want to temporarily apply a candidate configuration to the active configuration and
automatically roll back after 10 minutes In this scenario, which command will accomplish this task?
A. commit at
B. commit confirmed
C. commit check
D. commit
Answer: B
Q55
What are two default password requirements on devices running Junos OS? (Choose two.)
A. Passwords must contain at least one special character.
B. Alphanumeric characters classes must be used.
C. Passwords must be at least six characters in length.
D. An expiration date must be set.
Answer: B,C
Q56
Which command verifies configuration syntax without applying the changes?
A. commit and -quit
B. commit confirmed
C. commit comment
D. commit check
Answer: D
Q57
What is the purpose of the load merge command?
A. to combine the current configuration with the configuration you load.
B. to completely overwrite the current configuration with the configuration you load.
C. to add or delete variables from the configuration based on the contents of a specified path file.
D. to look for a replace tag in the configuration you load.
Answer: A
Q58
Which statement is correct regarding exception traffic on Junos devices?
A. The Junos OS does not provide congestion control for exception traffic sent to the RE.
B. The built-in rate limiter for exception traffic is configurable.
C. The Junos OS has a built-in rate limiter for exception traffic.
D. All exception traffic destined for the RE is sent over the out-of-band management link.
Answer: C
Q59
What is the default route preference for OSPF internal?
A. 5
B. 150
C. 100
D. 10
Answer: D
Q60
Which command prompt indicates that you are in operational mode?
A. user @ router #
B. user @ router >
C. user @ router $
D. user @ router &
Answer: B
Q61
Refer to the exhibit.
A customer reports that they have recently lost connectivity to a remote site over a shared
architecture.
Referring to the exhibit, what is the problem?
A. The remote router has been powered off.
B. The remote link is down.
C. The authentication method or key has been changed.
D. The remote site router has been configured for OSPF.
Answer: C
Q62
Which statement is correct regarding the configurration shown in the exhibit?
A. Timestamp information will not be included for each line of ospf-trace
B. When the ospf-trace file has created five files, it will stop logging additional information.
C. When the ospf-trace file reaches the 64 KB file size, it is renamed and begins a new file.
D. The ospf-trace file will automatically replace any existing trace file with the same name.
Answer: C
Q63
Which command causes the Junos OS to temporarily activate a configuration?
A. commit confirmed
B. commit synchronize
C. commit and-quite
D. commit check
Answer: A
Q64
Exhibit:
You notice traffic destined to 172.31.17.0/24 is traversing an OSPF path rather than BGP Path.
What is causing this behavior?
A. The 172.31.17.0/24 BGP route's outgoing interface is down
B. The 172.31.17.0/24 route does not have a valid BGP entry
C. The 172.31.17.0/24 BGP route is missing a valid default next hop
D. The 172.31.17.0/24 BGP has a higher route preference
Answer: D
Q65
You are in configuration mode at the top of the hierarchy. You need to abort the changes that you
have made and start again with a fresh copy of the active configuration. Which command should you
use to accomplish this task?
A. rollback 0
B. clear candidate config
C. reset config
D. load active
Answer: A
Q66
Which step is required when performing a Junos software upgrade?
A. You must zeroize the device.
B. You must load the factory default configuration
C. You must create a user account named maintenance-user.
D. You must reboot the device
Answer: D
Q67
You must configure the 2bfc:0000:0000:beef:0217:cbff:0000:5c85 IPv6 address on your device.
In this scenario, which three addresses are correct? (Choose three.)
A. 2bfc:0:0:beef:0217:cbff:0:5c85
B. 2bfc:0:beef:0217:cbff:0:5c85
C. 2bfc::beef:217:cbff:0:5c85
D. 2BFC::BEEF:217:CBFF::5C85
E. 2BFCnBEEF:0217:CBFF:0:5C85
Answer: A,C,E
Q68
Which two commands will provide the current configuration of the MX1-PE1 BGP group on your
router?
(Choose two.)
A. user@router# show groups | display set | match MX1-PE1
B. user@router> show configuration | dispalv set | match MX1-PE1
C. user@router> show configuration | match set | match MX1-PE1
D. user@router# show | display set | match MX1-PE1
Answer: B,D
Q69
Referring to the exhibit,
Which next-hop interface will be used to reach the 10.21.14.16 destination?
A. ge-0/0/2.0
B. ge-0/0/0.0
C. ge-0/0/3.0
D. ge-0/0/1.0
Answer: D
Q70
You are asked to configure a Junos device to perform regular configuration backups Which feature
will you configure under the [edit system) hierarchy to accomplish this task?
A. syslog
B. backup-router
C. archival
D. tracing
Answer: B
Q71
Which two platforms are supposed in both physical and virtual form factors? Choose TWO
A. NFX Series
B. SRX Series
C. ACX Series
D. MX Series
Answer: B,D
Q72
You configured the route filter shown in the exhibit.
In this scenario, which IP addresses would term-One accept?
A. IP addresses that are part of the 172.35.0.0/16 network, but not IP addresses that are part of the
172.35.0.0/16 network itself.
B. IP addresses that are part of the 172.35.0.0/16 network and IP addresses that are in the
172.35.0.0/16 and 172.36.0.0/16 subnets.
C. IP addresses that are part of the 172.35.0.0/16 network and IP addresses that are in the subnets of
172.35.0.0/16 network.
D. IP addresses that are part of the 172.35.0.0/16 network only.
Answer: C
Q73
Which parameter must be included when executing operational mode commands from within
configuration mode?
A. prompt
B. insert
C. run
D. do
Answer: C
Q74
How does the PFE determine how to forward transit traffic?
A. The PFE performs a destination lookup based on its own routing table.
B. The PFE uses the forwarding table provided by the RE.
C. The PFE uses the routing table provided by the
D. The PFE determines network destinations itself based on the RE's routing table.
Answer: B
Q75
What is responsible for processing multicast transit traffic?
A. RE
B. PFE
C. Control plane
D. Management plane
Answer: B
Q76
Which two commands would you use to reset the candidate configuration to the active
configuration?
(Choose two.)
A. rollback 2
B. rollback 0
C. rollback 1
D. rollback
Answer: B,D
Q77
Which set of IP addresses are in the same subnet?
A. 185.114.16.40/28 and 185.114.16.45/28
B. 185.114.16.59/28 and 185.114.16.82/28
C. 185.114.16.77/28 and 185.114.16.82/28
D. 185.114.16.91/28 and 185.114.16.96/28
Answer: A
Q78
Exhibit:
Which type of route does the configuration create?
A. a generated route
B. a default gateway
C. an indirect next hop
D. a non-advertised route
Answer: B
Q79
You recently uploaded a new software package to your Junos and you want to ensure that the file
uploaded successfully by verifying the file size. In this scenario, which command should you use?
A. file show encoding
B. file compare
C. file checksum shal
D. file list detail
Answer: D
Q80
Which statement is true about a virtual router routing instance?
A. An interface in the routing instance can also reside in the default routing instance.
B. It automatically has import and export policies applied.
C. It can be used to create a separate routing table.
D. It can be used for Layer 3 VPN implementations.
Answer: C
Q81
A Junos device is in a factory-default configuration and no host name is set. What is used in place of a
host name in this scenario?
A. user
B. router
C. amnesiac
D. Junos
Answer: C
Q82
You must recover a device by loading the rescue configuration file.
In this scenario, which command will accomplish this task?
A. {master:0}
user@router> load override rescue
B. {master:0}
user@router> rollback rescue
C. {master:0} [edit]
user@routert load override rescue
D. {master:0} [edit]
user@router# rollback rescue
Answer: B
Q83
The next hop identified in the static route command is not directly connected to your router.
Referring to the exhibit, what must be added to the command for the static route to work?
A. readvertise
B. retain
C. resolve
D. install
Answer: C
Q84
Exhibit:
While working on a Junos Device, you receive the message shown.
In this scenario, what would you do to stop the shutdown process?
A. Issue the request system halt in command
B. Issue the request system power-off in command
C. Issue the clear system reboot command
D. Issue the clear system commit command
Answer: C
Q85
Which two statements describe the RE on Junos OS devices? (Choose two.)
A. The RE provides hardware status messages for the PFE
B. The RE maintains the routing tables.
C. The RE is considered the control plane.
D. The RE forwards traffic based on its local copy of the forwarding table.
Answer: B,C
Q86
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?
***Exhibit is Missing***
A. [edit policy-options policy-statement my-policy]
user@router# copy term 2 to term 1
B. [edit policy-options policy-statement my-policy]
user@router# copy term 2 to term 0
C. [edit policy-options policy-statement my-policy]
user@router# rename term 1 to term 3
D. [edit policy-options policy-statement my-policy]
user@router# insert term 2 before term 1
Answer: B
Q87
Which three statements describe OSPF? (Choose three)
A. OSPF is a link-state IGP
B. OSPF must operate between different autonomous system
C. OSPF uses areas to incorporate hierarchy and to allow for scalability
D. OSPF uses a distance-vector algorithm to calculate routing cost
E. OSPF calculates the best path to each destination
Answer: A,C,E
Q88
What are three interface prefixes for a 40-gigabit interface? (Choose three.)
A. xe
B. et
C. xle
D. fte
E. es
Answer: B,C,E
Q89
What are three functions of the RE? (Choose three.)
A. to manage the PFE
B. to enforce stateless firewall filters
C. to implement policing
D. to maintain the forwarding tables
E. to monitor the chassis
Answer: B,D,E
Q90
Referring to the exhibit, which statement is correct?
A. The device will attempt to authenticate using the local database if RADIUS and TACACS+ are
unresponsive.
B. The device will attempt to authenticate using RADIUS and TACACS+ at the same time.
C. The device will randomly select the authentication method used for each new login attempt.
D. The device will never attempt to authenticate using the local database.
Answer: D
Q91
Which statement is true about PFEs?
A. A PFE receives hardware status messages from the RE
B. A PFE receives environmental status messages from RE.
C. A PFE receives layer 4 forwarding tables updates from the RE.
D. A PFE receives microcode updates from the RE.
Answer: C
Q92
A user attempts to log in to a Junos device. but the RADIUS server is unreachable.
Referring to the exhibit, what is the default action of a Junos device in this scenario?
A. The Junos device retries every 30 seconds until the connection is restored.
B. The Junos device uses the local authentication database.
C. The Junos device displays a RADIUS connection error.
D. The Junos device prompts for a cached RADIUS password.
Answer: C
Q93
Which command allows you to verify the syntax and consistency of your configuration without
actually activating your configuration?
A. commit no-activate
B. commit check
C. commit verify
D. User Interfaces
E. check commit
Answer: B
Q94
Which user authentication method is supported by Junos as a last resort alternative?
A. CHAP
B. local user database
C. TACACS+
D. RADIUS
Answer: B