Exam jn0-102 - All Questions

The IP address 10.1.1.1 belongs to which class of IP address space?


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


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


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Which command prompt indicates that you are in operational mode?


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What is the decimal equivalent of 00000100?


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What is a valid IPv6 address?


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Which simplified IPv6 address is the same as the IP address 2001:0000:1000:0000:0000:cbff:0020:0001/64?


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What are three characteristics of UDP? (Choose three.)


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Which layer in the OSI model is responsible for translating frames into bits?


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Which layer in the TCP/IP model is responsible for delivering packets to their destination?


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Why is IPv6 packet processing more effective than IPv4 packet processing?


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A user opens a webpage that requires the transmission of packets from the Web server to the client's browser. The packets transmitted from the Web server to the client exceed the smallest MTU value on the communications path.

Which two protocol functions allow this type of communication? (Choose two.)


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Which two statements are true about TCP communication? (Choose two.)


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Which two statements are true about optical networks? (Choose two.)


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At which layer of the OSI model does error checking occur with IPv6?


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Which statement is correct regarding IPv6 addresses?


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Which two statements about MPLS label-switched paths (LSPs) are true? (Choose two.)


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What are two ways that packet fragmentation is handled differently between IPv6 and IPv4? (Choose two.)


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-- Exhibit --

user@router> show route protocol static

inet.0: 15 destinations, 15 routes (15 active, 0 holddown, 0 hidden)

+ = Active Route, - = Last Active, * = Both

99.0.0.0/17 *[Static/5] 00:00:11

>to 10.1.1.2 via ge-0/0/1.0

99.0.0.0/19 *[Static/5] 00:00:11

>to 10.1.2.2 via ge-0/0/2.0

99.0.0.0/24 *[Static/5] 00:00:11

>to 10.1.3.2 via ge-0/0/3.0

99.0.0.0/26 *[Static/5] 00:00:11

>to 10.1.4.2 via ge-0/0/4.0

-- Exhibit --

In the exhibit, there are four static routes that route traffic through different interfaces.

Which interface does the router use if traffic is sent to the 99.0.0.1 destination?


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In dotted decimal notation, what is the equivalent of 11010101 01000010 01111111 11000010?


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What is the binary equivalent of 242.168.94.124?


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What is the last usable IP address in the 218.6.0.0/17 network?


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What is the network address for the 10.13.147.100/19 host?


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Which two prefixes would summarize the networks shown below? (Choose two.)

192.168.1.0/24

192.168.2.0/24

192.168.3.0/24


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How many host addresses are available in the 172.27.0.0/28 network?


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What are three benefits of using IPv6? (Choose three.)


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Which statement is correct about the forwarding table?


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Which statement describes exception traffic?


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What are two benefits of the modular design of the Junos OS? (Choose two.)


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Which statement describes the PFE?


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Which process is responsible for the routing protocols on a Junos device?


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Which process is responsible for the configuration of the router and all user commands on a Junos device?


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How does the PFE handle unicast transit traffic destined for an existing forwarding table entry?


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Which two design goals describe the Junos OS design? (Choose two.)


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Which two Junos platforms provide stateful firewall functionality? (Choose two.)


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What are two examples of RE exception traffic? (Choose two.)


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In the Junos OS, what handles transit traffic?


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Which statement describes transit traffic?


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What is the central processing component of the forwarding plane?


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Which statement is correct regarding the Junos OS?


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


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Which statement is correct regarding exception traffic processing?


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When using keyboard shortcuts, which single keystroke combination allows users to erase the entire current command?


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


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What must you type to enter operational mode from the root@% command prompt?


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Which two commands would you use to discard a candidate configuration? (Choose two.)


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Which two statements are true about the configure exclusive command? (Choose two.)


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Which command will display the active configuration?


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Which three commands will cause a logical interface to go administratively down after being committed? (Choose three.)


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Which command returns a list of commands in which a given keyword is used throughout the Junos hierarchies?


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


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-- 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;

+ }

-- Exhibit --

Referring to the exhibit, what are two differences between the active and candidate configurations? (Choose two.)


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Which mode is used to allow only a single person to edit a configuration?


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


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


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Which two statements are true regarding rescue configurations? (Choose two.)


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-- Exhibit --

Amnesiac (ttyu0)

login:

-- Exhibit --

Which statement is correct about the information shown in the exhibit?


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Which two statements are true regarding the use of NTP clock synchronization? (Choose two.)


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You are asked to change the cable on interface ge-2/1/3.

Which statement is correct?


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

Which statement is correct?


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You are asked to change the cable on interface ge-0/2/1.

Which statement is correct?


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-- 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?


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Which interface type connects the control and forwarding planes on an MX Series device?


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Which command is used to restore a Junos device to its default state?


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-- 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?


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Which statement is true about logical units?


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-- 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.)


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Which command is used to load the rescue configuration?


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


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-- 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?


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At which command prompt would you issue the set date <date> command?


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You must apply the family inet configuration parameter only to Gigabit Ethernet interfaces that are in FPC 2.

Which output applies to this configuration?


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-- 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?


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You are asked to configure the configuration archival feature on your Junos devices.

Which two transfer methods are available? (Choose two.)


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-- 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?


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Which command displays only the interfaces that are operationally and administratively up?


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To which directory does the Junos OS write traceoptions files?


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Which command gracefully shuts down the Junos OS?


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Which action does the ping 172.18.1.1 size 5 command perform?


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Which command displays the current temperature of a Junos device's components?


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Which command would you use to view interface usage details in real time?


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What happens when you issue the ping 172.19.102.2 count 5 command?


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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.)


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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.)


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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.)


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Which two commands are used during the password recovery process? (Choose two.)


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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.)


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-- Exhibit --

[edit interfaces ge-0/0/6]

user@router# show

unit 0 {

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?


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Which routing instance type is used to facilitate filter-based forwarding?


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


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Which configuration parameter on a Junos device alters the default next-hop resolution behavior of a static route?


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


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


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Which two statements are correct when you use the reject parameter as the next-hop value for a static route? (Choose two.)


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Which routing table stores IPv4 unicast routes and is used by multicast routing protocols to prevent loops?


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Which source of routing information is preferred by default?


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What are two routing requirements for a device to communicate with another device? (Choose two.)


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-- 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.)


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What are three types of routing instances? (Choose three.)


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


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-- 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?


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Which command will silently drop a matching packet?


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Which command will drop a matching packet and send out a notification message?


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


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


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Which route filter match type only matches prefixes greater than the defined prefix?


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In which hierarchy are routing policies defined?


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


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Which statement is correct about policies in the Junos OS?


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Which statement is correct about policies in the Junos OS?


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What is the default action for firewall filters?


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What is the purpose of unicast reverse path forwarding?


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Which two statements are correct about firewall filters in the Junos OS? (Choose two.)


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Which two firewall filter actions will terminate the processing and evaluation of a packet? (Choose two.)


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Which two statements are true regarding routing policy processing? (Choose two.)


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


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Which command will apply a policy to redistribute static routes into OSPF?


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-- 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.)


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