INT244 Unit 4: Sniffers, Social Engineering, Denial of Service - MCQ Practice | B. Tech. CSE

1 $What is the primary function of a packet sniffer in a network environment?$

A.

To block unauthorized access

B.

To encrypt network traffic

C.

To flood the network with data

D.

To capture and analyze network traffic

2 $In which mode must a Network Interface Card (NIC) be configured to capture all packets on a network segment, regardless of the destination MAC address?$

A.

Private Mode

B.

Protected Mode

C.

Promiscuous Mode

D.

Safe Mode

3 $Which of the following best describes 'Passive Sniffing'?$

A.

Overloading the switch's CAM table

B.

Sniffing on a hub-based network without altering traffic

C.

Using ARP poisoning to redirect traffic

D.

Sniffing on a switched network by injecting packets

4 $Why is sniffing on a switched network more difficult than on a hub-based network?$

A.

Switches have built-in firewalls

B.

Switches encrypt all data by default

C.

Switches only forward packets to the specific destination port

D.

Switches do not support Promiscuous mode

5 $What attack technique involves flooding a switch with numerous fake MAC addresses to fill up its CAM table?$

A.

DNS Spoofing

B.

ARP Poisoning

C.

MAC Flooding

D.

DHCP Starvation

6 $What is the result when a switch enters 'fail-open' mode due to a MAC flooding attack?$

A.

It acts like a hub and broadcasts all traffic

B.

It disconnects the attacker

C.

It shuts down all ports

D.

It blocks all UDP traffic

7 $Which protocol is abused during an ARP Poisoning attack?$

A.

Automatic Retrieval Protocol

B.

Authenticated Resolution Protocol

C.

Advanced Routing Protocol

D.

Address Resolution Protocol

8 $ARP Poisoning is commonly used to facilitate which type of attack?$

A.

SQL Injection

B.

Buffer Overflow

C.

Man-in-the-Middle (MitM)

D.

Cross-Site Scripting

9 $What is MAC Spoofing?$

A.

Flooding the network with MAC addresses

B.

Physically replacing a network card

C.

Stealing a user's password via email

D.

Changing the factory-assigned MAC address of a NIC in software

10 $Which switch feature allows an administrator to copy traffic from one port to another for analysis?$

A.

VLAN Tagging

B.

Port Security

C.

SPAN (Switched Port Analyzer)

D.

Spanning Tree Protocol

11 $What is the primary difference between a SPAN port and a hardware network tap?$

A.

SPAN is undetectable; taps are easily detected

B.

Taps drop packets; SPAN guarantees 100% capture

C.

A tap is a physical device inserted into the cable; SPAN is a switch configuration

D.

A tap is software-based; SPAN is hardware-based

12 $Which tool is commonly associated with performing MAC flooding attacks?$

A.

macof

B.

Wireshark

C.

Nessus

D.

Nmap

13 $How can an administrator detect a NIC running in promiscuous mode using DNS?$

A.

The NIC blocks port 53

B.

The NIC performs reverse DNS lookups for every IP it sniffs

C.

The NIC sends broadcast DNS requests only

D.

The NIC will not respond to DNS queries

14 $Which method involves measuring the response time of a host to detect if it is sniffing?$

A.

DNS Method

B.

Etherflood Method

C.

Latency/Ping Method

D.

ARP Method

15 $Which of the following is the most effective defense against packet sniffing?$

A.

Using a complex password

B.

Using encryption (e.g., SSH, SSL/TLS)

C.

Using static IP addresses

D.

Hiding the SSID

16 $What is Social Engineering in the context of information security?$

A.

Hacking into social media servers

B.

Manipulating people into divulging confidential information

C.

Engineering secure social platforms

D.

Creating social networks for hackers

17 $Which is the first phase of a social engineering attack?$

A.

Select Victim

B.

Develop Relationship

C.

Research/Reconnaissance

D.

Exploit

18 $In the context of social engineering phases, what is 'Pretexting' often part of?$

A.

The hook/trust development phase

B.

The cleanup phase

C.

The hardware installation phase

D.

The research phase

19 $Which social engineering threat involves sending fraudulent emails appearing to be from reputable sources?$

A.

Tailgating

B.

Dumpster Diving

C.

Phishing

D.

Vishing

20 $What is 'Vishing'?$

A.

Virtual Phishing

B.

Video Phishing

C.

Visual Phishing

D.

Voice/VoIP Phishing

21 $What is 'Smishing'?$

A.

Phishing via SMS/Text messages

B.

Smart Phishing

C.

Social Media Phishing

D.

Small Phishing attacks

22 $Looking over someone's shoulder to get information such as PINs or passwords is known as:$

A.

Shoulder Surfing

B.

Piggybacking

C.

Eavesdropping

D.

Screen Scraping

23 $Searching through trash to find sensitive information like bills or notes is called:$

A.

Waste Management

B.

Dumpster Diving

C.

Recycling

D.

Garbage Spoofing

24 $An attacker waits for an authorized person to open a secure door and then follows them inside. This is called:$

A.

Door Jamming

B.

Lock Picking

C.

Fence Jumping

D.

Tailgating/Piggybacking

25 $Which attack involves leaving infected physical media (like a USB drive) in a public place hoping someone plugs it in?$

A.

Spamming

B.

Skimming

C.

Phishing

D.

Baiting

26 $What is 'Quid Pro Quo' in social engineering?$

A.

Using a fake website

B.

Stealing an ID card

C.

Threatening a victim

D.

Promising a benefit in exchange for information

27 $Identity theft primarily involves:$

A.

Deleting a user's files

B.

Impersonating someone using their personal information

C.

Crashing a server

D.

Stealing a physical laptop

28 $What is the primary goal of a Denial of Service (DoS) attack?$

A.

To gain administrative access

B.

To compromise data integrity

C.

To disrupt the availability of a service

D.

To steal data

29 $What distinguishes a DDoS attack from a standard DoS attack?$

A.

DDoS targets databases only

B.

DDoS uses multiple compromised systems (botnet)

C.

DDoS uses a single attacker

D.

DDoS is only done via email

30 $In a DDoS architecture, what is a 'Zombie'?$

A.

The attacker's computer

B.

A compromised computer controlled by the attacker

C.

The firewall

D.

The target server

31 $Which attack exploits the TCP three-way handshake by sending many connection requests but never completing them?$

A.

Ping of Death

B.

SYN Flood

C.

HTTP GET Flood

D.

UDP Flood

32 $What is a 'Smurf Attack'?$

A.

Sending oversized ICMP packets

B.

Crashing a database with SQL queries

C.

Sending malware via email

D.

Using spoofed broadcast pings to flood a target

33 $Which of the following is an example of a Permanent Denial of Service (PDoS) attack?$

A.

Teardrop Attack

B.

Session Hijacking

C.

SYN Flooding

D.

Phlashing

34 $What type of DoS attack targets the application layer (Layer 7)?$

A.

UDP Flood

B.

SYN Flood

C.

HTTP Flood

D.

Smurf Attack

35 $Which tool, known as the 'Low Orbit Ion Cannon', is a popular open-source network stress testing and DoS tool?$

A.

Metasploit

B.

Netcat

C.

LOIC

D.

Nmap

36 $What is the function of a Command and Control (C&C) server in a DDoS attack?$

A.

To filter traffic

B.

To send instructions to the botnet

C.

To generate logs

D.

To host the victim website

37 $Which DoS tool is designed to keep many connections to the target web server open and hold them as long as possible?$

A.

Wireshark

B.

Slowloris

C.

Ping

D.

John the Ripper

38 $What is a 'Teardrop' attack?$

A.

Sending fragmented packets that cannot be reassembled

B.

Disconnecting the power cable

C.

Sending packets with future timestamps

D.

Flooding with tear-shaped emojis

39 $Hping3 is a command-line oriented TCP/IP packet assembler/analyzer that can be used for:$

A.

Repairing corrupted files

B.

Generating specific packet floods for DoS

C.

Only passive sniffing

D.

Social engineering

40 $What is a 'Reflection Attack'?$

A.

Mirroring the victim's website

B.

Reflecting laser signals

C.

Spoofing the victim's IP and sending requests to third-party servers

D.

Hacking the internal router

41 $Which of the following is a critical consideration when performing a DoS Pen-Test?$

A.

Use the most destructive malware available

B.

Coordinate with the ISP and cloud provider

C.

Target the personal devices of employees

D.

Ensure the attack is done without permission

42 $What is 'Blackholing' or 'Sinkholing' in the context of DDoS mitigation?$

A.

Deleting the attacker's computer

B.

Shutting down the internet

C.

Hacking back the attacker

D.

Redirecting malicious traffic to a non-existent endpoint

43 $Which UDP-based amplification attack uses Network Time Protocol servers?$

A.

Slowloris

B.

NTP Amplification

C.

HTTP Flood

D.

SYN Flood

44 $What is the concept of 'Reverse Social Engineering'?$

A.

The attacker creates a problem and convinces the victim to contact them for help

B.

Ignoring social engineering attempts

C.

The victim attacks the social engineer

D.

Using software to block social media

45 $Which tool is an advanced version of LOIC that supports HTTP floods and customization?$

A.

Ping

B.

Traceroute

C.

HOIC (High Orbit Ion Cannon)

D.

Netstat

46 $What does a packet sniffer capture when a network uses unencrypted Telnet?$

A.

Encrypted hashes

B.

Only the headers

C.

Plaintext usernames and passwords

D.

Garbage characters

47 $In a Man-in-the-Middle attack enabled by ARP poisoning, the attacker acts as:$

A.

A DNS server

B.

A firewall

C.

A relay between the victim and the gateway

D.

A database administrator

48 $Which of the following describes 'Impersonation' in social engineering?$

A.

Installing a virus

B.

Cracking a password

C.

Pretending to be a legitimate user or authority figure

D.

Scanning ports

49 $What is the 'Ping of Death'?$

A.

Sending an ICMP packet larger than the maximum IP packet size (65,535 bytes)

B.

Pinging a server every second

C.

A ping that destroys the hardware

D.

A ping that carries a virus

50 $Which countermeasure helps prevent ARP Poisoning on a switch?$

A.

Dynamic ARP Inspection (DAI)

B.

Disabling all ports

C.

Turning off the power

D.

Using Hubs instead of Switches

Unit 4: Sniffers, Social Engineering, Denial of Service - Practice Quiz

Did this save you a night before the exam?