science day competition(Network)

This protocol used to encrypt all data sent and received to/from web servers :

• http

• https

• ftps

• ftp

This protocol used to retrieve emails from a server. The server holds the email until client download it :

• SMTP

• FTP

• HTTP

• POP3

A command used to find out the IP address of a certain network you are connected to.

• Ip Command

• Netstat Command

• Ip Config

• Ping Command

How many bits are in an ipv4 address?

• 16

• 32

• 64

• 128

What is an IP address?

• A unique string of numbers that identifies each computer on a network.

• An unique number to identify mouse and keyboard

• An address used to find a printer

• An address to identify computer hardware

How many bits are contained in each field of an IPv6 address?

• 8

• 24

• 16

• 32

A __________ is a device that forwards packets between networks by processing the routing information included in the packet.

• bridge

• firewall

• router

• hub

How many bits are contained in each field of an mac address?

• 8

• 48

• 16

• 32

port number of DNS :

• 53

• 63

• 55

• 54

port number of Http:

• 88

• 90

• 80

• 53