OSI Model P&Ps

Question 1

FTP

Answer 1

File Transfer Protocol

Port # 21

Question 2

SSH

Answer 2

Secure Shell

Port# 22

Question 3

Telnet

Answer 3

TErminal NETwork

Port # 23

Question 4

SMTP

Answer 4

Simple Mail Transfer Protocol

Port # 25

Question 5

DNS

Answer 5

Domain Name Service or Domain Name Server

Port# 53

Question 6

HTTP

Answer 6

Hypertext Transfer Protocol

Por# 80

Question 7

POP3

Answer 7

POP3 Post Office Protocol 3

Port # 110

Question 8

IMAP

Answer 8

Internet Mail Access Protocol

Port # 143

Question 9

HTTPS

Answer 9

Hypertext Transfer Protocol Over Secure Sockets Layer

Port # 443

Question 10

RDP

Answer 10

Remote Desktop Protocol

Port # 3389

Question 11

NetBIOS/NetBT

Answer 11

Networked Basic Input/Output System

Port # 137-139

Question 12

SMB/CIFS

Answer 12

Server Message Block or Small To Midsize Business
Common Internet File System

Port # 445

Question 13

SLP

Answer 13

Service Location Protocol

Port # 427

Question 14

AFP

Answer 14

AFP Apple Filing Protocol

Port # 548

Question 15

DHCP

Answer 15

Dynamic Host Confirguration Protocol

Port # 67/68

Question 16

LDAP

Answer 16

Lightweight Directory Access Protocol

Port # 389

Question 17

SNMP

Answer 17

Simple Network Management Protocol

Port # 161/162

Question 18

TCP

Answer 18

Transmission Control Protocol

Port # 80/443

Question 19

UDP

Answer 19

User Datagram Protocol

Port # 161/162

Question 20

802.11a

Answer 20

One of the first standards issued under 802.11 umbrella in 1999

Footage/Speed: 5GHz/54Mbps

Question 21

802.11b

Answer 21

802.11b standard; it was also published in 1999

Footage/Speed: 2.4GHz/11Mbps

Question 22

802.11g

Answer 22

802.11g joined the 802.11 family in 2003.

Footage/Speed: 2.4GHz/54Mbps

Question 23

802.11n

Answer 23

Wireless-N was developed in 2009 to improve speeds, reliability, and extend the range of wireless transmissions, it used two radio frequencies;

802.11n standard compatible with 802.11a/b/g devices.

Footage/Speed: 2.4GHz and 5GHz/ 600Mbps/230ft indoor

Question 24

802.11ac

Answer 24

802.11n standard compatible with 802.11a/b/g devices.

Footage/Speed:
5GHz/1300Mbps
2.4GHz/450Mbps

Question 25

IEEE 802.11ad (WiGig)

Answer 25

Multiple Gigabit Wireless System (MGWS) with high throughput data, 802.11ad became part of the 802.11 series in 2012.

Footage/Speed:
6.7 Gbps/ 60 GHz
30 ft from the access point

Question 26

IEEE 802.11ah (WiFi HaLow)

Answer 26

Adopted in May 2017, 802.11ah aimed to use unlicensed frequency bands below 1 GHz.

Its purpose was to establish lower energy consumption and create extended-range WLANs that surpassed that of the 2.4/5 GHz bands.

Footage/Speed: 900 MHz/347Mbps/1,781.5 ft indoor

Question 27

IEEE 802.11ax (WiFi 6 or High-Efficiency WLAN)

Answer 27

As of 2019, the 802.11ax standard has become the newest WiFi standard.

Designed to deliver faster speeds, support more devices simultaneously, decrease latency, improve security, and increase bandwidth.

To do so, it includes technologies like OFDMA, MU-MIMO, 1024-QAM, and more.

Footage/Speed:
2.4GHz/5GHz/WiFi 6 Extended;

it has a theoretical maximum speed of 10 Gbps.

Question 28

• 2.4Ghz

Answer 28

WiFi Standards 1999

Footage/Speed: 11Mpbs

Question 29

• 5Ghz

Answer 29

WiFi Standard 2008 adopted 2013

Footage/Speed: 54Mbps