Explaining Network Applications

Question 1

Application protocol used to provide web content to browsers.

Answer 1

HyperText Transfer Protocol (HTTP)
Port 80
Port 443

Question 2

Original obsolete version of the security protocol now developed as TLS

Answer 2

Secure sockets layer (SSL)

Question 3

Security protocol that uses certificates for authentication and encryption to protect web communications and other application protocols

Answer 3

Transport layer security (TLS)

Question 4

Application protocol used to transfer files between network hosts. Variants include S(ecure)FTP, FTP with SSL (FTPS and FTPES) and T(rivial)FTP. FTP utilizes ports 20 and 21.

Answer 4

File transfer protocol (FTP)
Port 21

Question 5

Simplified form of FTP supporting only file copying. TFTP works over UDP.

Answer 5

Trivial File Transfer Protocol (TFTP)
Port 69

Question 6

A secure version of the File Transfer Protocol that uses a Secure Shell (SSH) tunnel as an encryption method to transfer, access and manage files

Answer 6

Secure FTP (SFTP)
Port 22

Question 7

Application protocol used for requesting files from Windows servers and delivering them to clients. It allows machines to share files and printers thus making them available for other machines to use. Client software is available for UNIX-based systems. Samba software allows UNIX and LINUX servers or NAS appliances to run services for Windows clients.

Answer 7

Server Message Block (SMB)
Netbios port 139 or 445 (137-139)

Question 8

Often used to mean print device but also refers to a term used to describe the software components of a printing solution. It’s the object that windows sends output to. It consists of a spool directory, printer driver and configuration information

Answer 8

Printer
Port 9100
Port 631 (IPP)

Question 9

Programming and query language common to many relational database management systems.

Answer 9

Structured Query Language (SQL)
Oracle port 1521
Ms SQL Server 1433
MySQL 3306
PostgreSQL 5432

Question 10

Application protocol used to send mail between hosts on the a internet. Messages are sent between servers over TCP port 25 or submitted by a mail client over secure port TCP 587

Answer 10

Simple Mail Transfer Protocol (SMTP)
Port 25
Port 587

Question 11

Application protocol that enables a client to download email messages from a server mailbox to a client over port TCP 110 or secure port TCP 995.

Answer 11

Post Office Protocol (POP)

Question 12

Application protocol providing a means for a client to access and manage email messages stored in a mailbox on a remote server.

Answer 12

Internet Message Access Protocol (IMAP)
IMAP4 port 143
IMAPS port 993

Question 13

Generic name for protocols that carry voice traffic over data networks.

Answer 13

Voice over IP (VoIP)

Question 14

Parts of telephone network “local hoop” that use voice-grade cabling. Analog data transfer over this using dial up modems is slow (33.3Kbps)

Answer 14

Plain old telephone service (POTS)

Question 15

Routes incoming calls to direct numbers and provides facilities such as voice mail, Automatic Call Distribution (ACD) and Interactive Voice Response (IVR). A PBX can also be implemented as software (virtual PBX). An IP based PBX or hybrid PBX allows use of VoIP.

Answer 15

Private Branch Exchange (PBX)

Question 16

Application protocol used to establish disestablish and manage VoIP and conferencing communications sessions. It handles user discovery (locating a user in the network) availability advertising (whether a user is prepared to receive calls) negotiating session parameters (such as use of audio/video) and session management and termination.

Answer 16

Session Initiation Protocol (SIP)
Port 5060 and 5062

Question 17

Handset or software client that implements a type of voice over Internet Protocol (VoIP) to allow a user to place and receive calls

Answer 17

VoIP Phones

Question 18

Means of translating between a VoIP system and legacy voice equipment and networks.

Answer 18

Voice gateway