JunOS-100 (2)

1.

1 point

What is the primary purpose for the classification of traffic in a router?

to use the classification to provide the configured service level

to use the classification to discard malformed packets

to use the classification to reorder packets from various sources

to use the classification to route traffic

2.

1 point

Which three statements are true regarding the Network Time Protocol (NTP) in JUNOS
platforms? (Choose three.)

MD5 authentication is supported.

It is useful to correlate timestamps on log files and other events for troubleshooting and forensics.

The boot-server configuration allows a router to synchronize its clock when it boots up, regardless of the offset between the NTP clock source and its internal clock.

A client always synchronizes to a server even when the difference between the server clock and the local clock differs by a large amount.

JUNOS software can provide a primary time reference

3.

1 point

What is the proper order for CoS processing for ingress packets on a Juniper router?

Multifield Classifier > Forwarding Policy > Policing > BA Classifier

BA Classifier > Policing > Multifield Classifier > Forwarding Policy

Multifield Classifier > Policing > BA Classifier > Forwarding Policy

BA Classifier > Forwarding Policy > Policing > Multifield Classifier

4.

1 point

When configuring a scheduler map, which two are referenced? (Choose two.)

Rewrite Rules

Forwarding Class

Scheduler

Priority

5.

1 point

What represents the decimal equivalence of 11000000 10101000 10101100 11110001?

192.168.184.201

192.170.184.221

192.170.172.237

192.168.172.241

6.

1 point

Which major J-Web menu should you use to upgrade the JUNOS software on the router?

Maintain

Monitor

Configuration

Diagnose

7.

1 point

What is the primary syslog file?

/var/syslog-file

/log-file

/var/syslog

/var/log/messages

8.

1 point

What are the usable hosts on the 200.50.12.64/26 network?

.65 through .127

65 through .126

.64 through .127

.66 through .128

9.

1 point

When you display the routing table by entering the show route command, what does the *
indicate?

The route is a default route.

The route was learned using a dynamic routing protocol.

The route is a direct route

The route was selected as active.

10.

1 point

What is used to segment larger networks into smaller networks?

wildcard masks

route filtering

supernet masks

subnet masks

11.

1 point

Given the host IP address of 192.168.100.60 and a network mask of 255.255.255.224 (or /27),
which address represents the correct network address for the referenced host?

192.168.100.0

192.168.100.16

192.168.100.48

192.168.100.32

12.

1 point

How is a loopback cleared on interface ge-0/0/0?

Issue the configuration command delete interfaces ge-0/0/0 gigether-options loopback , then commit.

No command is necessary, the loopback times-out in 5 minutes.

Issue the operational command clear interfaces ge-0/0/0 loopback local.

Issue the configuration command clear interfaces ge-0/0/0 loopback, then commit.

13.

1 point

Rewrite rules are used in which CoS scenario?

When a device is used to connect to another autonomous system.

When a single device is configured to provide differentiated services.

When CoS is used to classifiy traffic as low priority.

When multiple devices in a network are configured to use CoS to provide differentiated services.

14.

1 point

When a non-root user connects to a JUNOS platform and enters a username and password, the
user is immediately placed at which level?

user level CLI

UNIX shell

operational mode

configuration mode

15.

1 point

Which two statements accurately describe a broadcast domain? (Choose two.)

Broadcast domains consist of devices that reside on the same sub-network.

Broadcast domains consist of devices that connect to a common switch or hub.

Broadcast domains require a gateway device such as a router.

Broadcast domains consist of a group of devices that can be reached by sending a frame addressed to the Layer 2 broadcast address.

16.

1 point

Which two statements are correct about routing tables in JUNOS? (Choose two.)

They only contain the best possible route to each destination.

There are separate tables for IPv4 and IPv6 called inet.0 and inet6.0 respectively.

All running protocols can populate the routing tables at the same time.

Routes with the highest preference value are placed as active routes in the routing table.

17.

1 point

Which two statements are true regarding an Ethernet collision domain? (Choose two.)

If a switch is used, the collision domain includes all devices connected to the switch.

If a hub is used, the collision domain is limited to each device and the hub.

If a hub is used, the collision domain includes all devices connected to the hub.

If a switch is used, the collision domain is limited to each device and the switch.

18.

1 point

The auto-complete feature in the JUNOS CLI is triggered by which method?

space bar for variable completion; tab key for command completion

tab key for variable and command completion; space bar for command completion

space bar for both command and variable completion

space bar for command completion; tab key for variable completion

19.

1 point

The interface ge-0/2/3 is located in which flexible PIC concentrator slot?

2

3

4

0

20.

1 point

Which user authentication methods are available in JUNOS?

Local User Database

RADIUS and TACACS only

Local user Database, RADIUS, and TACACS+

MD5 and SHA

21.

1 point

What represents the binary equivalence of 192.168.187.201?

11000000 10101000 10111011 11001001

10101000 11001000 10101001 10101001

11000000 10101100 10101011 11000101

11000100 10101010 10110011 11001011

22.

1 point

If the PFE does not have a route to the destination address of a packet, which action will be
taken?

The PFE floods the packet out of all interfaces.

The PFE drops the packet and sends a destination unreachable notification back to source device.

The PFE forwards the packet to the routing engine for further processing.

The PFE queues the packet and sends a request for a layer 3 lookup to the routing engine.

23.

1 point

In which routing table would you find an OSPF V2 route?

inet.0

ipv4-unicast

inet.4

inet.ipv4

24.

1 point

Which three statements are true of dynamic routing protocols? (Choose three.)

They share network layer reachability information among neighbors.

They are scalable.

They are tolerant of configuration errors.

They automate next hop decisions..

B. They are Dijkstra based.

25.

1 point

The monitor traffic command provides access to which utility?

traceroute

tcpdump

telnet

netstat

26.

1 point

Which logical unit number must be configured on an interface using PPP encapsulation?

unit 255

unit 0

unit 100

unit 1

27.

1 point

Click the Exhibit button. Given the policy shown in the exhibit, what will happen to Static route
172.10.16.0/24?

reject

next-policy

accept

go to default policy

28.

1 point

Which protocol family is required prior to assigning an IP address to an interface?

family ip

family inet

family inet4

family ip6

29.

1 point

Which two loopback types are supported for serial interfaces on Juniper devices? (Choose two.)

Local

Bidirectional

Remote

Far End

30.

1 point

Which method loads the configuration which was active before your last commit?

load replace last-active

load rollback 1

rollback last-active

rollback 1

31.

1 point

What is the role of route preference?

It is used to determine what routes to accept into the routing table.

It is used to determine which route should become active.

It is used to select the best route between multiple equal cost paths.

It is used to select which routing table to use for forwarding.

32.

1 point

What are two valid initial configuration methods supported on Juniper routers? (Choose two)

CLI

PCMCIA flash card

JUNOScope

J-Web

33.

1 point

Which two policy actions are considered flow control actions? (Choose two.)

reject

community add

next policy

next term

34.

1 point

Click the Exhibit button. Given the firewall filter shown the exhibit, a
packet has a source IP address of 20.2.2.1 and a destination address of 10.1.1.1. How can the
packet be changed to discard and count it?

rename term 4 to term 1

insert term 4 before term 1

insert term 4 before term 3

rename term 1 to term 5

35.

1 point

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

tcpdump

ls -a-l

ps -x

passwd

36.

1 point

You are at the system level. Which two would allow you to see the protocol's level candidate
configuration? (Choose two.)

op show protocols

exit configuration-mode show protocols

top show protocols

exit configuration-mode show configuration protocols

37.

1 point

Which command is used to retrieve the serial numbers of a Juniper device?

show version

show hardware detail

show chassis hardware

view hardware database

38.

1 point

Which CLI command is used to upgrade a Juniper router?

request system software add

load override terminal

load package

request system software upgrade

39.

1 point

A router has been configured with the authentication order settings shown below: [edit]
user@host# show system authentication-order authentication-order [ radius tacplus password ];
The router also has a local database that contains the user lab with password lab123. What
would happen if both the RADIUS and the TACACS servers respond with a reject for user lab?

The user lab will not be able to login.

The user will be able to login only if tries to login as the root user.

The user lab will be authenticated against the local database and will be able to login.

The user lab will receive an error message indicating the username and password provided could not be found on the radius and tacacs servers.

40.

1 point

What are three components of a scheduler? (Choose three.)

Forwarding Class

RED Configuration

TOS Marking

Priority

Buffer Size