Part 1 : Chapter 1 - Introduction to TCP/IP Networking

Question 1

What is the most pervasive model used in the world?

Answer 1

TCP/IP

Question 2

Layer 1 PDU

Question 3

Layer 2 PDU

Answer 3

Frame

Question 4

Layer 3 PDU

Question 5

Layer 4 PDU

Question 6

Layer 5 PDU

Question 7

Layer 6 PDU

Question 8

Layer 7 PDU

Question 9

Which layer in TCP/IP Model adds header and trailer while sending the data?

Answer 9

The Data Link Layer

“ The Data link layer add LH (Link Header) and LT (Link Trailer) to the Ethernet frame.

Question 10

What is the name of he process of putting headers (sometime trailers) to the data?

Answer 10

Data Encapsulation

Question 11

Which networking model uses PDU?

Answer 11

OSI

Question 12

What is Protocol Data Unit?

Question 13

Which of the following protocols are examples of TCP/IP transport layer protocols?
(Choose two answers.)
a. Ethernet
b. HTTP
c. IP
d. UDP
e. SMTP
f. TCP

Answer 13

UDP

TCP

Question 14

Which of the following protocols are examples of TCP/IP data-link layer protocols?
(Choose two answers.)
a. Ethernet
b. HTTP
c. IP
d. UDP
e. SMTP
f. TCP
g. PPP

Answer 14

Ethernet

PPP

Question 15

The process of HTTP asking TCP to send some data and making sure that it is received
correctly is an example of what?
a. Same-layer interaction
b. Adjacent-layer interaction
c. OSI model
d. All of these answers are correct.

Answer 15

b. Adjacent-layer interaction

Question 16

The process of TCP on one computer marking a TCP segment as segment 1, and the
receiving computer then acknowledging the receipt of TCP segment 1 is an example of
what?
a. Data encapsulation
b. Same-layer interaction
c. Adjacent-layer interaction
d. OSI model
e. All of these answers are correct.

Answer 16

b. Same-layer interaction

Question 17

The process of a web server adding a TCP header to the contents of a web page, followed
by adding an IP header and then adding a data-link header and trailer, is an
example of what?
a. Data encapsulation
b. Same-layer interaction
c. OSI model
d. All of these answers are correct.

Answer 17

a. Data encapsulation

Question 18

Which of the following terms is used specifically to identify the entity created when
encapsulating data inside data-link layer headers and trailers?
a. Data
b. Chunk
c. Segment
d. Frame
e. Packet

Answer 18

e. Packet

Question 19

Which OSI encapsulation term can be used instead of the term frame?

a. Layer 1 PDU
b. Layer 2 PDU
c. Layer 3 PDU
d. Layer 5 PDU
e. Layer 7 PDU

Answer 19

b. Layer 2 PDU

Question 20

What is Adjacent Layer Interaction?

Answer 20

The general topic of how on one computer, two adjacent layers in a networking architectural model work together, with the lower layer providing services to the higher layer.

Question 21

What is De-capsulation?

Answer 21

On a computer that receives data over a network, the process in which the device interprets the lower-layer headers and, when finished with each header, removes the header, revealing the next-higher-layer PDU.

Question 22

What is Encapsulation?

Answer 22

The placement of data from a higher-layer protocol behind the header (and in some cases, between a header and trailer) of the next-lower-layer protocol. For example, an IP packet could be encapsulated in an Ethernet header and trailer before being sent over an Ethernet.

Question 23

What is frame?

Answer 23

A term referring to a data-link header and trailer, plus the data encapsulated between the header and trailer.

Question 24

What is Networking Model?

Answer 24

A generic term referring to any set of protocols and standards collected into a comprehensive grouping that, when followed by the devices in a network, allows all the devices to communicate. Examples include TCP/IP and OSI.

Question 25

What is packet?

Answer 25

A logical grouping of bytes that includes the network layer header and encapsulated data, but specifically does not include any headers and trailers below the network layer.

Question 26

What is Protocol Data Unit (PDU)?

Answer 26

A generic term referring to the header defined by some layer of a networking model, and the data encapsulated by the header (and possibly trailer) of that layer, but specifically not including any lower-layer headers and trailers.