Common network protocols and vulnerabilities in Cybersecurity - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of the HTTP protocol?

HTTP (HyperText Transfer Protocol) is used to transfer web pages from servers to browsers, allowing users to view websites.

beginner

What does the TCP protocol do in networking?

TCP (Transmission Control Protocol) ensures reliable, ordered, and error-checked delivery of data between devices on a network.

intermediate

What is a common vulnerability of the FTP protocol?

FTP (File Transfer Protocol) often transmits data, including passwords, in plain text, making it vulnerable to interception and eavesdropping.

beginner

What is a Denial of Service (DoS) attack?

A DoS attack floods a network or service with excessive traffic to make it unavailable to legitimate users.

intermediate

Why is using outdated protocols like Telnet considered risky?

Telnet sends data, including passwords, without encryption, making it easy for attackers to intercept sensitive information.

Which protocol is commonly used to securely browse websites?

A SMTP

B FTP

C Telnet

D HTTPS

HTTPS encrypts data between the browser and server, making web browsing secure.

What vulnerability does FTP commonly have?

A Data sent in plain text

B Automatic encryption

C Limited file size

D Slow transfer speed

FTP sends data, including passwords, without encryption, exposing it to interception.

Which attack aims to make a network service unavailable by overwhelming it?

A Phishing

B Denial of Service (DoS)

C Man-in-the-middle

D SQL Injection

DoS attacks flood a service with traffic to disrupt normal access.

Which protocol is NOT secure because it sends data unencrypted?

A SSH

B HTTPS

C Telnet

D SFTP

Telnet transmits data in plain text, making it insecure.

What does TCP ensure in data transmission?

A Data is sent without errors and in order

B Data is compressed

C Data is encrypted

D Data is broadcast to all devices

TCP provides reliable, ordered, and error-checked delivery of data.

Explain the difference between HTTP and HTTPS and why HTTPS is important.

Think about how websites keep your information safe.

Describe common vulnerabilities in network protocols and how attackers exploit them.

Consider what happens when data is not protected.