WorksheetsNetwork Security Quiz
Total questions: 20
Worksheet time: 18mins
A video conferencing application experiences packet loss and delays during peak hours, while file downloads continue unaffected. Which QoS mechanism should be implemented to prioritize real-time traffic?
Increase bandwidth for all users
Use DiffServ to mark and prioritize RTP (Real-time Transport Protocol) packets
Disable TCP Slow Start to speed up transmissions
Enable Tail Drop on all routers
Which QoS mechanism reserves bandwidth for specific flows before data transmission?
DiffServ
IntServ (Integrated Services)
FIFO Queuing
Traffic Shaping
A company wants to limit bandwidth for non-critical applications like social media. Which technique should they use?
Traffic Policing
Load Balancing
ECN (Explicit Congestion Notification)
Multiplexing
A user types https://www.example.com in a browser. Which Application Layer protocol is responsible for translating 'www.example.com' to an IP address?
HTTP
DNS
DHCP
FTP
A company wants employees to access emails from multiple devices while keeping messages synchronized. Which email protocol should be configured?
POP3
IMAP
SMTP
Telnet
Alice wants to send a confidential message to Bob over an insecure network. She encrypts the message using Bob's public key. Which cryptographic concept ensures only Bob can decrypt it?
Symmetric Encryption
Digital Signature
Asymmetric Encryption
Hash Function
Which cryptographic algorithm is a symmetric-key block cipher with a fixed block size of 128 bits?
RSA
AES
SHA-256
Diffie-Hellman
In RSA key generation, what is Φ(n) (Euler's totient function) if n = p × q, where p and q are primes?
(p + q)
(p - 1) × (q - 1)
p × q
(p + 1) × (q + 1)
A hacker intercepts communication between a user and a banking website to steal login credentials. Which type of attack is this?
Phishing
Man-in-the-Middle (MitM)
Denial-of-Service (DoS)
SQL Injection
An attacker floods a web server with excessive traffic to crash it. This is an example of:
Brute Force Attack
Cross-Site Scripting (XSS)
Denial-of-Service (DoS) Attack
Zero-Day Exploit
Which symmetric encryption algorithm is widely used for securing internet communications due to its speed and security?
RSA
AES
SHA-256
Diffie-Hellman
Which of the following is the MOST secure method for user authentication?
Password
Two-Factor Authentication (2FA)
Security Questions
CAPTCHA
A website fails to sanitize user input, allowing attackers to inject malicious scripts. This vulnerability is called:
SQL Injection
Cross-Site Scripting (XSS)
Buffer Overflow
ARP Spoofing
Which technology hides a private network's IP addresses while allowing internet access?
Firewall
VPN
NAT (Network Address Translation)
IDS (Intrusion Detection System)
A company wants to block employees from accessing social media. Which firewall feature should they use?
NAT (Network Address Translation)
ACL (Access Control List)
IDS (Intrusion Detection System)
VPN (Virtual Private Network)
The (a) algorithm is commonly used to generate the hash for digital signatures.
IPSec operates in two modes: ______ mode (for end-to-end security) and ______ mode (for VPNs).
transport
tunnel
A ______ server centralizes authentication for multiple systems and applications.
Biometric authentication measures ______ characteristics like fingerprints or iris patterns.
To securely transmit emails, ________ protocol encrypts the connection between mail servers.
