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Final exam (Juniper course)

Q1

Select the correct answer. What is the function of the Routing Engine?

  • A. Forwarding packets
  • B. Policing interface bandwidth
  • C. Maintaining the routing table
Correct answer

C. Maintaining the routing table

Q2

Select the correct answer. What is the function of the Packet Forwarding Engine?

  • A. Forwarding packets
  • B. Processing device access
  • C. Manipulating routing decision
Correct answer

A. Forwarding packets

Q3

Select the correct answer. To access the Juniper EX switch using serial console, the baud rate must be set to which value in the terminal software?

  • A. 2400
  • B. 9600
  • C. 19200
  • D. 15200
Correct answer

B. 9600

Q4

Select the correct answer. Which commands are required to switch from shell mode to configuration mode?

  • A 
    exit
configure
  • B 
    start shell
configure
  • C 
    cli
configure
  • D 
    configure
cli
Correct answer

C 

cli
configure

Q5

Select the correct answer. What is the usage for configuration mode?

  • A. Configuring the device
  • B. Monitoring and troubleshooting
  • C. Accessing the Routing Engine's shell
Correct answer

A. Configuring the device

Q6

Select the correct answer. To achieve the end result below, which missing configuration command needs to be entered? 

root> configure
root# <Missing configuration>
root# commit

# Result
root@coresw#

  • A. set system domain-name coresw
  • B. set system host-name coresw
  • C. set system ntp server coresw
Correct answer

B. set system host-name coresw

Q7

Select the correct answer. What is the maximum number of rollbacks supported on a Juniper EX switch?

  • A. 5
  • B. 10
  • C. 30
  • D. 50
Correct answer

D. 50

Q8

Select the correct answer. The prefix xe- represents an interface running at which speed?

  • A. 10/100/1000Mbps
  • B. 1Gbps
  • C. 10Gbps
  • D. 40Gbps
Correct answer

C. 10Gbps

Q9

Select the correct answer. How many protocol families can be assigned to a logical unit?

  • A. 1
  • B. 0
  • C. Không giới hạn
Correct answer

A. 1

Q10

Select the correct answers. There can be more than one correct answers to this question. Which link aggregation types and/or protocols are supported on a Juniper EX switch?

  • A. FlexLink
  • B. LACP
  • C. PAgP
  • D. Aggregated Ethernet
Correct answers

B. LACP & D. Aggregated Ethernet

Q11

True or False? Traffic passing through an access port is untagged?

  • A. True
  • B. False
Correct answer

A. True

Q12

True or False? When a VLAN is not allowed on a trunk port, traffic of that VLAN will not be forwarded by the switch?

  • A. True
  • B. False
Correct answer

A. True

Q13

Select the correct answer. What is the function of a VLAN?

  • A. Separating different broadcast domains
  • B. Routing between subnets
  • C. Providing physical connectivity
  • D. Providing a user interface
Correct answer

A. Separate different broadcast domains

Q14

Select the correct answer. Which set of commands need to be entered to configure a trunk port with VLANs 100 and 200?

  • A 
    configure
set vlans v0100-t1-letan vlan-id 100
set vlans v0200-t2-hoitruong vlan-id 200
set interfaces ge-0/0/0.0 family ethernet-switching port-mode trunk
set interfaces ge-0/0/0.0 family ethernet-switching vlan members [100 200]
commit
  • B 
    configure
set vlans v0100-t1-letan l3-interface vlan.100
set vlans v0200-t2-hoitruong l3-interface vlan.200
set interfaces ge-0/0/0 vlan-tagging
commit
  • C 
    configure
set vlans v0100-t1-letan vlan-id 100
set vlans v0200-t2-hoitruong vlan-id 200
set interfaces ge-0/0/0.0 family ethernet-switching vlan members [100 200]
commit
  • D 
    configure
edit vlans v0100-t1-letan vlan-id 100
edit vlans v0200-t2-hoitruong vlan-id 200
edit interfaces ge-0/0/0.0 family ethernet-switching port-mode trunk
edit interfaces ge-0/0/0.0 family ethernet-switching vlan members [100 200]
commit
Correct answer

A 

configure
set vlans v0100-t1-letan vlan-id 100
set vlans v0200-t2-hoitruong vlan-id 200
set interfaces ge-0/0/0.0 family ethernet-switching port-mode trunk
set interfaces ge-0/0/0.0 family ethernet-switching vlan members [100 200]
commit

Q15

Select the correct answer. IPv4 address needs to be configured under which protocol family?

  • A. inet6
  • B. mpls
  • C. ethernet-switching
  • D. inet
Correct answer

D. inet

Q16

Select the correct answer. Which type of interface is being configured? 

configure
set vlans v1000-muasam vlan-id 1000 l3-interface vlan.1000
set interfaces vlan.1000 family inet address 10.10.0.1/24
commit

  • A. Routed VLAN interface
  • B. Routed interface
  • C. Loopback
  • D. Access interface
Correct answer

A. Routed VLAN interface

Q17

Select the correct answer. Given the routing table below: 

show route

inet.0: 4 destinations, 4 routes (4 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

0.0.0.0/0          *[Static/5] 5d 16:08:46
                    > to 10.10.11.254 via vlan.1010
10.10.11.128/25    *[Direct/0] 5d 16:08:46
                    > via vlan.1010
10.10.11.129/32    *[Local/0] 5d 16:09:06
                      Local via vlan.1010
172.16.0.0/16      *[Static/5] 5d 16:08:46
                    > to 10.10.11.130 via vlan.1010

Traffic destined for 172.17.12.68 will be routed to which next hop IP?

  • A. 10.10.11.129
  • B. 10.10.11.130
  • C. 10.10.11.254
  • D. 172.16.0.0
Correct answer

C. 10.10.11.254

Q18

True or False? Given the routing table below: 

show route

inet.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

172.16.123.0/29    *[Direct/0] 1w1d 15:18:46
                    > via vlan.123
172.16.123.1/32    *[Local/0] 1w1d 15:19:06
                      Local via vlan.123
192.168.10.0/24    *[Direct/0] 1w1d 15:18:46
                    > via vlan.10
192.168.10.1/32    *[Local/0] 1w1d 15:19:06
                      Local via vlan.10
192.168.20.0/24    *[OSPF/10] 1w1d 15:18:46, metric 2
                    > to 172.16.123.2 via vlan.123
192.168.30.0/24    *[Static/5] 1w1d 15:18:46
                    > to 172.16.123.3 via vlan.123

To reach 192.168.30.12, the switch would route the packet to next hop 172.16.123.1?

  • A. True
  • B. False
Correct answer

B. False

Q19

True or False? When participating in OSPF, does a router always need a router ID?

  • A. True
  • B. False
Correct answer

A. True

Q20

Select the correct answer. Which command can be used to rollback the configuration to the previous version?

  • A. commit confirmed 5
  • B. rollback 0
  • C. abort
  • D. rollback 1
Correct answer

D. rollback 1

Thank you for your participation in the course.