JNCIA- JUNOS CERT PREP QUESTIONS 1-50
The IP address 10.1.1.1 belongs to which class of IP address space?
A. Class A
B. Class B
C. Class C
D. Class D - Answer- A. Class A
For the interface ge-1/2/3.4, what does "ge" represent?
A. SONET/SDH
B. Gigabit Ethernet
C. Aggregated Ethernet
D. GRE - Answer- B. Gigabit Ethernet
Which word starts a command to display the operational status of a Junos device?
A. put
B. set
C. show
D. get - Answer- C. show
Which command prompt indicates that you are in operational mode?
A. user@router&
B. user@router#
C. user@router%
D. user@router> - Answer- D. user@router>
What is the decimal equivalent of 00000100?
A. 2
B. 4
C. 9
D. 12 - Answer- B. 4
What is a valid IPv6 address?
A. 00:05:85:23:45:67
B. 127.0.0.1
C. 2001:0db8:3000:2215:0000:0000:aaaa:1111
D. 49.0001.0192.0168.1001.00 - Answer- C.
2001:0db8:3000:2215:0000:0000:aaaa:1111
Which simplified IPv6 address is the same as the IP address
2001:0000:1000:0000:0000:cbff:0020:0001/64?
A. 2001::1::cbff:2:0001/64
B. 2001::1000::cbff:20:1/64
C. 2001:0:1000::cbff:20:1/64
D. 2001:0:1:0:0:cbff:2:1/64 - Answer- C. 2001:0:1000::cbff:20:1/64
, What are three characteristics of UDP? (Choose three.)
A. UDP is faster than TCP.
B. UDP operates at the Transport Layer.
C. UDP is connection-oriented.
D. UDP data is sent best-effort.
E. UDP is more reliable than TCP. - Answer- A. UDP is faster than TCP.
B. UDP operates at the Transport Layer.
D. UDP data is sent best-effort.
Which layer in the OSI model is responsible for translating frames into bits?
A. Application Layer
B. Presentation Layer
C. Data Link Layer
D. Physical Layer - Answer- C. Data Link Layer
Which layer in the TCP/IP model is responsible for delivering packets to their
destination?
A. Application Layer
B. Transport Layer
C. Internet Layer
D. Network Access Layer - Answer- C. Internet Layer
Why is IPv6 packet processing more effective than IPv4 packet processing?
A. fixed header size
B. smaller header size
C. fewer header fields
D. variable header size - Answer- A. fixed header size
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.)
A. packet segmentation
B. serialized checking
C. packet sequencing
D. parallel checking - Answer- A. packet segmentation
C. packet sequencing
Which two statements are true about TCP communication? (Choose two.)
A. The receiver acknowledges the final packet in each communications stream.
B. The receiver adds sequencing numbers to the packets received.
C. The sender adds sequencing numbers to the packets it sends.
D. The receiver acknowledges each packet it receives from the sending device. -
Answer- A. The receiver acknowledges the final packet in each communications stream.
C. The sender adds sequencing numbers to the packets it sends.
The IP address 10.1.1.1 belongs to which class of IP address space?
A. Class A
B. Class B
C. Class C
D. Class D - Answer- A. Class A
For the interface ge-1/2/3.4, what does "ge" represent?
A. SONET/SDH
B. Gigabit Ethernet
C. Aggregated Ethernet
D. GRE - Answer- B. Gigabit Ethernet
Which word starts a command to display the operational status of a Junos device?
A. put
B. set
C. show
D. get - Answer- C. show
Which command prompt indicates that you are in operational mode?
A. user@router&
B. user@router#
C. user@router%
D. user@router> - Answer- D. user@router>
What is the decimal equivalent of 00000100?
A. 2
B. 4
C. 9
D. 12 - Answer- B. 4
What is a valid IPv6 address?
A. 00:05:85:23:45:67
B. 127.0.0.1
C. 2001:0db8:3000:2215:0000:0000:aaaa:1111
D. 49.0001.0192.0168.1001.00 - Answer- C.
2001:0db8:3000:2215:0000:0000:aaaa:1111
Which simplified IPv6 address is the same as the IP address
2001:0000:1000:0000:0000:cbff:0020:0001/64?
A. 2001::1::cbff:2:0001/64
B. 2001::1000::cbff:20:1/64
C. 2001:0:1000::cbff:20:1/64
D. 2001:0:1:0:0:cbff:2:1/64 - Answer- C. 2001:0:1000::cbff:20:1/64
, What are three characteristics of UDP? (Choose three.)
A. UDP is faster than TCP.
B. UDP operates at the Transport Layer.
C. UDP is connection-oriented.
D. UDP data is sent best-effort.
E. UDP is more reliable than TCP. - Answer- A. UDP is faster than TCP.
B. UDP operates at the Transport Layer.
D. UDP data is sent best-effort.
Which layer in the OSI model is responsible for translating frames into bits?
A. Application Layer
B. Presentation Layer
C. Data Link Layer
D. Physical Layer - Answer- C. Data Link Layer
Which layer in the TCP/IP model is responsible for delivering packets to their
destination?
A. Application Layer
B. Transport Layer
C. Internet Layer
D. Network Access Layer - Answer- C. Internet Layer
Why is IPv6 packet processing more effective than IPv4 packet processing?
A. fixed header size
B. smaller header size
C. fewer header fields
D. variable header size - Answer- A. fixed header size
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.)
A. packet segmentation
B. serialized checking
C. packet sequencing
D. parallel checking - Answer- A. packet segmentation
C. packet sequencing
Which two statements are true about TCP communication? (Choose two.)
A. The receiver acknowledges the final packet in each communications stream.
B. The receiver adds sequencing numbers to the packets received.
C. The sender adds sequencing numbers to the packets it sends.
D. The receiver acknowledges each packet it receives from the sending device. -
Answer- A. The receiver acknowledges the final packet in each communications stream.
C. The sender adds sequencing numbers to the packets it sends.
