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Questions-CertNCIA-#2

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certnica 2
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Quiz by fdsqwertyfds qwerty, updated more than 1 year ago
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Created by fdsqwertyfds qwerty about 8 years ago
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Resource summary

Question 1

Question
Which mode is used to allow only a single person to edit a configuration?
Answer
  • A. configure batch
  • B. configure private
  • C. configure exclusive
  • D. configure dynamic

Question 2

Question
Which information would you find using the CLI help function? (Choose two.)
Answer
  • 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

Question 3

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

Question 4

Question
Which two statements are true regarding rescue configurations? (Choose two.)
Answer
  • A. Once saved, a rescue configuration is loaded using the rollback 0 command.
  • B. The rescue configuration must contain the minimal elements necessary to restore network connectivity.
  • C. A minimal rescue configuration is defined by default.
  • D. A rescue configuration must include a root password.

Question 5

Question
-- Exhibit -- Amnesiac (ttyu0) login: -- Exhibit -- Which statement is correct about the information shown in the exhibit?
Answer
  • 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  • C. The device was recently upgraded to a newer version of the Junos OS.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.

Question 6

Question
Which two statements are true regarding the use of NTP clock synchronization? (Choose two.)
Answer
  • A. The Junos OS supports client, server, and symmetric modes of NTP operation.
  • B. Synchronized time on all network devices makes log messages more useful for troubleshooting.
  • C. Authentication methods are not supported.
  • D. The Junos OS must be used as the primary time reference.

Question 7

Question
You are asked to change the cable on interface ge-2/1/3. Which statement is correct?
Answer
  • A. The cable is found on FPC 1, slot 3, and port 2.
  • B. The cable is found on slot 1, port 2, and FPC 3.
  • 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.

Question 8

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

Question 9

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

Question 10

Question
-- Exhibit -- user@router> show configuration groups { ge-int { interfaces { <ge-*> { unit 0 { familyinet { address 10.10.12.1/24; } } } } } } ... interfaces { ge-0/0/1 { unit 0; } -- Exhibit -- Referring to the exhibit, which two actions would you take to only apply the 10.10.12.1/24 address to the ge-0/0/1.0 interface?
Answer
  • A. Apply the ge-int group to the configuration at the [edit] hierarchy.
  • B. Apply the ge-int group to the configuration at the [edit interfaces ge-0/0/1] hierarchy.
  • C. Apply the ge-int group to the configuration at the [edit interfaces ge-0/0/1 unit 0] hierarchy.
  • D. Apply the ge-int group to the configuration at the [edit interfaces] hierarchy.

Question 11

Question
Which interface type connects the control and forwarding planes on an MX Series device?
Answer
  • A. fxp1
  • B. fxp0
  • C. me0
  • D. ae1

Question 12

Question
Which command is used to restore a Junos device to its default state?
Answer
  • A. load factory-default
  • B. load override factory-default
  • C. load replace default
  • D. load set default

Question 13

Question
-- Exhibit -- {master:0}[edit interfaces] user@switch# show me0 { disable; unit 0 { familyinet { address 10.1.1.10/24; } } } -- Exhibit -- 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?
Answer
  • A. delete me0 disable
  • B. activate me0
  • C. set me0 unit 0 enable
  • D. deactivate me0

Question 14

Question
Which statement is true about logical units?
Answer
  • A. Logical units are similar to VLANs used by other vendors.
  • B. A logical unit is required for transit interfaces.
  • C. Frame Relay encapsulation supports one logical unit.
  • D. Link speed and duplex are configured in the logical unit properties.

Question 15

Question
-- Exhibit -- [edit system syslog] user@router# show host 152.170.10.10 { any warning; } file changes { change-log info; } -- Exhibit -- Referring to the exhibit, which two statements are true? (Choose two.)
Answer
  • A. Any warning message will be sent to the 152.170.10.10 host.
  • B. A warning message will be logged when the 152.170.10.10 host logs in.
  • C. Changes to the device's internal temperatures will be logged.
  • D. Changes to the configuration will be logged.

Question 16

Question
Which command is used to load the rescue configuration?
Answer
  • A. load override rescue
  • B. rollback rescue
  • C. load replace rescue-configuration
  • D. rollback 49

Question 17

Question
Which two external authentication servers are supported for administrative access to a Junos device? (Choose two.)
Answer
  • A. RADIUS
  • B. LDAP
  • C. ACE
  • D. TACACS+

Question 18

Question
-- 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?
Answer
  • 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 userdefined policy.

Question 19

Question
At which command prompt would you issue the set date <date> command?
Answer
  • A. [edit chassis] user@router#
  • B. [edit] user@router#
  • C. [edit system] user@router#
  • D. user@router>

Question 20

Question
You must apply the family inet configuration parameter only to Gigabit Ethernet interfaces that are in FPC 2. Which output applies to this configuration?
Answer
  • A. [edit groups] user@router# show ge-int { interfaces { <ge-*> { 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 { familyinet; } } } }
  • D. [edit groups] user@router# show ge-int { interfaces { <ge-2/*> { unit 0 { familyinet; } } } }

Question 21

Question
-- 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] '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?
Answer
  • 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.

Question 22

Question
You are asked to configure the configuration archival feature on your Junos devices. Which two transfer methods are available? (Choose two.)
Answer
  • A. TFTP
  • B. FTP
  • C. SCP
  • D. SFTP

Question 23

Question
-- 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?
Answer
  • A. user@router> request system configuration rescue save
  • B. user@router# request system configuration rescue save
  • C. user@router> file copy current /config/rescue.conf
  • D. user@router# file copy current /config/rescue.conf

Question 24

Question
Which command displays only the interfaces that are operationally and administratively up?
Answer
  • A. show interfaces terse | match up
  • B. show interfaces terse | match down
  • C. show interfaces terse | except up
  • D. show interfaces terse | except down

Question 25

Question
To which directory does the Junos OS write traceoptions files?
Answer
  • A. /var/tmp/
  • B. /var/
  • C. /var/log/
  • D. /var/home/<username>/

Question 26

Question
Which command gracefully shuts down the Junos OS?
Answer
  • A. request system reboot
  • B. request system logout
  • C. request system halt
  • D. restart gracefully

Question 27

Question
Which action does the ping 172.18.1.1 size 5 command perform?
Answer
  • A. It sends only five ping requests to the 172.18.1.1 destination.
  • B. It sends a continuous ping with a packet length of five bytes to the 172.18.1.1 destination.
  • C. It sends five rapid ping requests to the 172.18.1.1 destination.
  • D. It sends a continuous rapid ping with a packet length of five bytes to the 172.18.1.1 destination.

Question 28

Question
Which command displays the current temperature of a Junos device's components?
Answer
  • A. show chassis temperature-thresholds
  • B. show chassis environment
  • C. show chassis hardware
  • D. show chassis alarms

Question 29

Question
Which command would you use to view interface usage details in real time?
Answer
  • A. show interfaces terse
  • B. show interfaces extensive
  • C. monitor interface traffic
  • D. monitor traffic interface

Question 30

Question
What happens when you issue the ping 172.19.102.2 count 5 command?
Answer
  • A. ICMP echo requests are sent to 172.19.102.2 in five-millisecond intervals.
  • B. ICMP echo requests are sent to 172.19.102.2 until five packets are dropped.
  • C. ICMP echo requests are sent to 172.19.102.2 five times.
  • D. ICMP echo requests are sent continuously to 172.19.102.2 for five seconds.

Question 31

Question
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.)
Answer
  • A. ICMP
  • B. SNMP
  • C. TCP
  • D. HTTPS

Question 32

Question
You are troubleshooting a routing issue and need to check the hop-by-hop path to the 10.10.10.10 destination. Which three commands would display the path? (Choose three.)
Answer
  • A. user@router# traceroute 10.10.10.10
  • B. user@router> ping record-route 10.10.10.10
  • C. user@router>traceroute 10.10.10.10
  • D. user@router# run traceroute 10.10.10.10
  • E. user@router# ping record-route 10.10.10.10

Question 33

Question
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.)
Answer
  • 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

Question 34

Question
Which two commands are used during the password recovery process? (Choose two.)
Answer
  • A. clear system login
  • B. boot -s
  • C. recovery
  • D. delete system root-authentication

Question 35

Question
You receive an alarm that your Junos device is experiencing problems regarding temperature. Which two commands would you use to investigate this problem? (Choose two.)
Answer
  • A. show chassis hardware
  • B. show chassis temperature-thresholds
  • C. show chassis pic fpc-slot <value> pic-slot <value>
  • D. show chassis environment

Question 36

Question
-- Exhibit -- [edit interfaces ge-0/0/6] user@router# show { familyinet { address 172.16.10.100/24; address 172.16.10.101/24; } } -- 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?
Answer
  • A. preferred
  • B. broadcast
  • C. primary
  • D. arp 172.16.10.101

Question 37

Question
Which routing instance type is used to facilitate filter-based forwarding?
Answer
  • A. VRF
  • B. FBF
  • C. forwarding
  • D. no-forwarding

Question 38

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

Question 39

Question
Which configuration parameter on a Junos device alters the default next-hop resolution behavior of a static route?
Answer
  • A. no-readvertise
  • B. resolve
  • C. preference
  • D. passive

Question 40

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

Question 41

Question
Which two statements are true regarding routing tables? (Choose two.)
Answer
  • 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.4.

Question 42

Question
Which two statements are correct when you use the reject parameter as the next-hop value for a static route? (Choose two.)
Answer
  • A. The packet is dropped and the packet's source is marked with the no-readvertise parameter.
  • B. The system sends the packet back to the source.
  • C. The packet is dropped from the network.
  • D. The system sends an ICMP message back to the source of the packet.

Question 43

Question
Which routing table stores IPv4 unicast routes and is used by multicast routing protocols to prevent loops?
Answer
  • A. inet.0
  • B. inet.1
  • C. inet.2
  • D. inet.3

Question 44

Question
Which source of routing information is preferred by default?
Answer
  • A. OSPF internal
  • B. OSPF external
  • C. IS-IS Level 1
  • D. IS-IS Level 2

Question 45

Question
What are two routing requirements for a device to communicate with another device? (Choose two.)
Answer
  • A. end-to-end communications path
  • B. hosts on the same Layer 2 broadcast domain
  • C. hosts on the same Layer 3 broadcast domain
  • D. routing information on participating Layer 3 devices

Question 46

Question
-- Exhibit -- inet.0: 4 destinations, 4 routes (4 active, 0 holddown, 0 hidden) + = Active Route, - = Last Active, * = Both 172.23.10.0/24 *[Direct/0] 21:59:56 >via ge-0/0/6.0 172.23.10.100/32 *[Local/0] 22:00:10 Local via ge-0/0/6.0 172.23.12.0/24 *[Static/5] 00:01:36 >to 172.23.10.1 via ge-0/0/6.0 172.23.15.0/24 *[Static/5] 00:01:36 >to 172.23.10.1 via ge-0/0/6.0 -- Exhibit -- Users are unable to access resources in the 172.23.14.0/24 subnet. Referring to the exhibit, which two actions would solve this problem? (Choose two.)
Answer
  • A. Configure a separate routing instance.
  • B. Configure a default static route.
  • C. Configure a static route to 172.23.14.0/24.
  • D. Configure the existing routes to resolve the indirect next hop.

Question 47

Question
What are three types of routing instances? (Choose three.)
Answer
  • A. VPN
  • B. virtual-router
  • C. policy
  • D. VRF
  • E. forwarding

Question 48

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

Question 49

Question
-- 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?
Answer
  • A. Traffic matching the default route will use 10.1.1.1 as the next hop.
  • B. Traffic matching the default route will use 10.1.1.254 as the next hop.
  • 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.

Question 50

Question
Which command will silently drop a matching packet?
Answer
  • A. set routing-options static route 10.1.1.1/32 no-retain
  • B. set routing-options static route 10.1.1.1/32 discard
  • C. set routing-options static route 10.1.1.1/32 reject
  • D. set routing-options static route 10.1.1.1/32 passive

Question 51

Question
Which command will drop a matching packet and send out a notification message?
Answer
  • A. set routing-options static route 10.1.1.1/32 no-retain
  • B. set routing-options static route 10.1.1.1/32 discard
  • C. set routing-options static route 10.1.1.1/32 reject
  • B. set routing-options static route 10.1.1.1/32 drop
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