CCNA CHAPTER 2 (PASAR)

Question 1

Was created by by the DoD to ensure data integrity, as well as maintain communications during war.

Answer 1

Transmission Control Protocol/Internet Protocol

Question 2

Is a condensed version of the OSI Model

Answer 2

DoD Model

Question 3

TCP/IP Model Layers

Answer 3

Process/Application Layer
Host-to-Host Layer
Internet Layer
Network Access Layer

Question 4

TCP/IP layer that defines protocols for node to node application communication and also controls user-interface specifications

Answer 4

Application Layer

Question 5

TCP/IP that takes care of the addressing of host by giving them an IP address

Answer 5

Internet Layer

Question 6

TCP/IP layer that creates reliable end-to-end communication and ensuring the error-free delivery of data.

Answer 6

Host-to-Host Layer

Question 7

TCP/IP layer that monitors the data exchange between the host and the network.

Answer 7

Network Access Layer

Question 8

Is the chameleon of protocols and its specialty is terminal emulation

Answer 8

Telnet

Question 9

Protocol that actually lets us to transfer files

Answer 9

File Transfer protocol

Question 10

Stripped down, stock version of FTP

Answer 10

Trivial File Transfer Protocol

Question 11

Protocol specializing in file sharing

Answer 11

Network File System

Question 12

IS used to send email

Answer 12

SMTP

Question 13

Is used to receive email

Answer 13

POP3

Question 14

Protocol designed for printer sharing

Answer 14

Line Printer Daemon

Question 15

Defines a protocol for writing clients/server applications based on a GUI

Answer 15

X Window

Question 16

Collects and manipulates valuable network information

Answer 16

SNMP

Question 17

A report delimiting the operational traits of a healthy network

Answer 17

baseline

Question 18

Resolves hostnames

Answer 18

DNS

Question 19

Assigns IP addresses to hosts

Answer 19

DHCP

Question 20

Information a DHCP server can provide

Answer 20

IP Address
Subnet Mask
Domain Name
Default Gateway(routers)
DNS
WINS information

Question 21

Takes large block of information from an application and breaks them into segments.

Answer 21

TCP

Question 22

The TCP header is ___bytes long, or up to ___ bytes with options.

Answer 22

20 ; 24

Question 23

The port number of the application on the host sending the data.

Answer 23

Source port

Question 24

The port number of the application requested on the destination host.

Answer 24

Destination port

Question 25

A number used by TCP that puts the data back in the correct order or retransmits missing or damaged data, a process called sequencing.

Answer 25

Sequence number

Question 26

The TCP octet that is expected next.

Answer 26

Acknowledgment number

Question 27

The number of 32-bit words in the TCP header. This indicates where the data begins. The TCP header (even one including options) is an integral number of 32 bits in length.

Answer 27

Header length

Question 28

Always set to zero.

Answer 28

Reserved

Question 29

Control functions used to set up and terminate a session.

Answer 29

Code bits

Question 30

The window size the sender is willing to accept, in octets.

Answer 30

Window

Question 31

The cyclic redundancy check (CRC), because TCP doesn't trust the lower layers and checks everything. The CRC checks the header and data fields.

Answer 31

Checksum

Question 32

A valid field only if the Urgent pointer in the code bits is set. If so, this value indicates the offset from the current sequence number, in octets, where the first segment of non-urgent data begins.

Answer 32

Urgent

Question 33

May be 0 or a multiple of 32 bits, if any. What this means is that no options have to be present (option size of 0). However, if any options are used that do not cause the option field to total a multiple of 32 bits, padding of 0s must be used to make sure the data begins on a 32-bit boundary.

Answer 33

Options

Question 34

Handed down to the TCP protocol at the Transport layer, which includes the upper-layer headers.

Answer 34

Data

Question 35

- Scaled down economy model of TCP/IP model - referred to as thin model

Answer 35

UDP

Question 36

Considered as a connectionless protocol

Answer 36

UDP

Question 37

Specifies whether fragmentation should occur.

Answer 37

Flags

Question 38

Unique IP-packet value.

Answer 38

Identification