Chapter 7/introduction to TCP/IP

Question 1

What is a protocol

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Answer 1

a protocol is a set of rules that govern communications that a computer use as comunication language

Question 2

TCP/IP

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Answer 2

the transmission control protocol/internet protocol

it is the protocol used on the internet

Question 3

DOD is similar to OSI

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Answer 3

department of defense model is the model that TCP/PI is based on

Question 4

4 layers on the DOD model

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Answer 4

process/ Application
Host to host
Internet
Network access

Question 5

Where are the majority of TCP/IP layers at

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Answer 5

the majority of layers are in the process/ Application

Question 6

1- process/ Application

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Answer 6

the layer of differentiation and flexibility 
it has so many protocols:
DHCP
DNS
 FTP
HTTP
HTTPS
IMAP
LDAP
POP3
RDP
SFTP
SMB
SMTP
SNMP
SSH
Telent

Question 7

• protocol is

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Answer 7

Sometimes referred to as an access method, a protocol is a standard used to define a method of exchanging data over a computer network such as local area network, Internet, Intranet, etc. Each protocol has its own method of how data is formatted when sent and what to do with it once received, how that data is compressed or how to check for errors in data.
One of the most common and known protocols is HTTP (HyperText Transfer Protocol), which is a protocol used to transmit data over the world wide web (Internet).

Question 8

DHCP

314

Answer 8

Short for Dynamic Host Configuration Protocol, DHCP is a protocol used to assign an IP address to a computer or device that has been connected to a network automatically. Routers, switches, or servers that use DHCP to assign addresses to other computers can make setup and management easier for the network administrator.

Question 9

DNS

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Answer 9

Short for Domain Name System or Domain Name Service, a DNS is an Internet or network server that helps to point domain names or hostnames to their associated Internet Protocol address.

Question 10

FTP

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Answer 10

Short for File Transfer Protocol, FTP. is a standard way of sending and receiving files between two computers. A good example of how FTP is used today is by web developers, who will connect to their web server using FTP and send updated versions of their web pages to the server.

Question 11

HTTP

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Answer 11

Short for HyperText Transfer Protocol, HTTP is a set of standards that allow users of the World Wide Web to exchange information found on web pages. When accessing any web page entering http:// in front of the address tells the browser to communicate over HTTP.
Hypertext Transfer Protocol Secure, HTTPS is a protocol which uses HTTP on a connection encrypted by transport-layer security.
HTTP transmit Data in plain text it main there is no encryption and the information can be stolen.

Question 12

HTTPS

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Answer 12

HTTPS is used to protect transmitted data from eavesdropping. It is the default protocol for conducting financial transactions on the web, and can protect a website’s users from censorship by a government or an ISP. The data on HTTPS is encrypts.

Question 13

• encrypts is

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Answer 13

The process of making data unreadable by other humans or computers for the purpose of preventing others from gaining access to its contents. Encrypted data is generated using an encryption program such as PGP, encryption machine, or a simple encryption key and appears as garbage until it is decrypted. To read or use the data, it must be decrypted, and only those who have the correct password or decryption key can make the data readable again.

Question 14

IMAP

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Answer 14

Short for Internet Message Access Protocol, IMAP
It is a protocol for retrieving e-mail from a server, similar to POP. The secure version of IMAP is called IMAPS, which stands for IMAP over SSL.

Question 15

LDAP ?

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Answer 15

Lightweight Directory Access Protocol, LDAP is an Internet protocol that runs over TCP designed

Question 16

POP3

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Answer 16

Post Office Protocol 3 has been the preferred protocol for downloading email but it is being replaced by IMAP4
because the IMAP4 has more security

Question 17

RDP

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Answer 17

Remote Desktop Protocol, RDP is the protocol that enables Remote Desktop Connection to communicate with Microsoft Terminal Services.

Question 18

SFTP port 115

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Answer 18

Secure File Transfer Protocol, SFTP is a version of FTP that encrypts any commands and data transfers, helping keep your passwords secure and your session private.

Question 19

SMB

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Answer 19

Server Message Block, SMB is a common network communications method used on Microsoft operating systems allowing those computers to communicate with other SMB computers.

Question 20

SMTP

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Answer 20

Simple Mail Transfer Protocol, SMTP is an Internet standard for the sending of e-mail, we call it push protocol.

Question 21

SNMP port 161 (set trapes)

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Answer 21

Simple Network Management Protocol, SNMP, it gathered and manage network performance information.

Question 22

SSH

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Answer 22

Secure Shell, SSH
is a secure protocol for remote logins. Using an SSH client, a user can connect to a server to transfer information in a more secure manner than other methods, such as telnet.

Question 23

Telnet

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Answer 23

Telnet is considered insecure because it transfers all data in clear text. Which means if a user was sniffing a network, it’s very possible they could grab your username and password as they were being transmitted. Users who are concerned about the data being transmitted should consider SSH as opposed to telnet.

Question 24

2- Host to Host layer protocol

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Answer 24

within this layer there are two alternatives
TCP guarantees pockets delivery throw the use of a virtual circuit and data acknowledgment but UDP does not ( connection oriented )
UDP is connectionless.it is faster because it doese not have

Question 25

how many ports are there

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Answer 25

there are 65536 ports numbered from 0 to 65535

Question 26

The well known ports

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Answer 26

ports from 0 to 1023

Question 27

the registered ports

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Answer 27

ports from 1024 to 49151

Question 28

TCP/IP applications combine the host IP address with the port number
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Answer 28

the combination is known as a socket

Question 29

3- internet layer protocol

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Answer 29

in this layer we fined the main workhorse of the TCP/IP which is the IP and 3 support protocols ICMP, ARP, RARP.

Question 30

IP

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Answer 30

is responsible for managing logical net work addresses and ultimately getting data from point A to point B

Question 31

octet

Answer 31

An octet is unit of digital information equal to exactly eight bits.

Question 32

IPv4 has 32 bits and there are classes, those classes are define by the first three bites on the IP address
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Answer 32

class A 1-127 the first bit is 0
class B 128-191 the first bit is 10
class C 192-223 the first bit is 110

Question 33

what does a DNS do

Answer 33

translaet url in to

Question 34

SMB

Answer 34

it function as FTP

Question 35

static and dynamic hust configuration protocol DHCP

Answer 35

324

Question 36

way would some one use a remote disktop

Answer 36

316

Question 37

NAT PAT

Answer 37

326