Exam Objective 1.1

Question 1

SSH

Answer 1

Secure Shell (SSH)
-Is a Cryptographic Network Protocol
-Uses TCP port 22
-Is used to remotely access the shell of a remote
client.
-Is the effective replacement for Telnet.

Question 2

DNS

Answer 2

Domain Name System (DNS)
-Is a hierarchical and decentralized naming system
for computers, services, or other resources
connected to a private network or the Internet
-Uses UDP port 53.
-Gives an IP address for a Domain Name (ex.
www.Google.com)

Question 3

SMTP

Answer 3

Simple Mail Transfer Protocol (SMTP)
-Used to send emails from Server to Server, as well
as to send mail from a device to a mail server.
-Uses TCP port 25.

Question 4

Telnet

Answer 4

Telecommunication Network (Known as Telnet)
-allows you to log into devices remotely and gain
console access.
-Is connection-oriented but is an non-encrypted
connection.
-Telnet uses TPC port 23.
-Is rarely used anymore (was replaced by SSH).

Question 5

SFTP

Answer 5

SSH File Transfer Protocol (known as SFTP)
-Is the secured (Encrypted) version of FTP.
-Provides File system functionality such as resuming
interupted transfers, directory listings, rand remote
file removal.

Question 6

FTP

Answer 6

File Transfer Protocol (Known as FTP)
-Is an unsecured Protocol. It authenticates with a username and password,
-Has full-featured functionality.
-Runs off of two separate ports (TCP 20 for active
data mode, and TCP 21 for control).

Question 7

TFTP

Answer 7

Trivial File Transfer Protocol (Known as TFTP)
-Is a simple file transfer application that reads and
writes files without any authentication and should
not be used on production systems.
-It runs off of UDP port 69.

Question 8

DHCP

Answer 8

Dynamic Host Configuration Protocol (known as DHCP)
-Automates the configuration of IP addresses, subnet
masks and other options.
-Uses UDP ports 67 and 68.
-requires that all clients have access to a dhcp
server.
-These servers are often servers, appliances, or are
intigrated into a SOHO Router.

Question 9

HTTP

Answer 9

Hypertest Transfer Protocol (Known as HTTP)

- uses TCP Port 80
- Is responsible for unsecured webpages. 
- Is not only used by browsers.

Question 10

HTTPS

Answer 10

Hypertext Transfer Protocol Secure (Known as HTTPS)

- Is used for secure communications. 
- It uses public key encryption. 
- HTTPS uses TCP Port 443.

Question 11

SNMP

Answer 11

Simple Network Management Protocol (Known as SNMP)
-Gathers statistics from network devices.
-Uses udp port 161.
-Version 3 requires authentication, is encrypted, and
maintains message integrity.

Question 12

RDP

Answer 12

Remote Desktop Protocol (RDP)
-Uses TCP port 3389.
-Is common on many versions of windows.
-Can connect to an entire desktop or just an
application on a device.
-Clients for other operating systems (MacOS, Linux,
ETC) exist

Question 13

NTP

Answer 13

Network Time Protocol (NTP)
-UsesUDP port 123
-Synchronizes a devices individual clock to the NTP
servers time so that all devices are in sync.

Question 14

SIP

Answer 14

Session Initiation Protocol (SIP)
-uses tcp ports 5060 and 5061
-Is commonly used for VoIP services.
- can provide the Following services Call, RIng,
Hangup, Video Conferencing, instant messaging,
file transfers, etc.

Question 15

SMB

Answer 15

Server Message Block (SMB also referred to as CIFS or Common Internet File System)

- is a protocol used by windows
- is responsible for File sharing, Printer sharing
- It uses tcp port 445. (NETBOIS-less)

Question 16

POP3 / IMAP

Answer 16

Post Office Protocol Version 3 (POP 3)
-uses tcp port 110. POP3 has basic mail transfer
functionality.

Internet Message Access Protocol v4
-uses TCP/143
-incudes management of email inbox from multiple
clients

Question 17

LDAP / LDAPS

Answer 17

LDAP (lightweight directory access protocol)

- TCP 389
- store and retrieve information in a network directory 

LDAPS (LDAP (lightweight directory access protocol) secure)

- non-standard lamentation of ldap over SSL  
- TCP 636

Question 18

H.323

Answer 18

H.323 
    - ITU Telecommunication h.32x protocol series 
    - TCP 1720 
    - set up in manage VoIP sessions 
    -ex. Call, ring, hang up
    - one of the earliest VoIP standards
     still in use today