5.1.10 - Scanning Overview (Practice Questions)

Network scan

A ping sweep is used to scan a range of IP addresses to look for live systems. A ping sweep can also alert a security system, which could result in an alarm being triggered or an attempt being blocked. Which type of scan is being used?

Wardialing

A technician is using a modem to dial a large block of phone numbers in an attempt to locate other systems connected to a modem. Which type of network scan is being used?

SYN/ACK

TCP is a connected-oriented protocol that uses a three-way handshake to establish a connection to a system port. Computer 1 sends a SYN packet to Computer 2. Which packet does Computer 2 send back?

Vulnerability scan

What type of scan is used to find the system weaknesses such as open ports, access points, and other potential threats?

Helps determine whether the firewall is stateful or stateless and whether or not the ports are open.

Which of the following best describes the scan with ACK evasion method?

It filters incoming and outgoing traffic, provided you with anonymity, and shields you from detection.

Which of the following is a benefit of using a proxy when you find that your scanning attempts are being blocked?

Scany

You are using an iOS device. You want to scan networks, websites, and ports to find open network devices. Which of the following network mapping tools should you use?

Currports

You want a list of all open UDP and TCP ports on your computer. You also want to know which process opened the port, which user created the process, and what time it was created. Which of the following scanning tools should you use?

RST

Alex, a security specialist, is using an Xmas tree scan. Which of the following TCP flags will be sent back if the port is closed?

Idle scan

A hacker finds a target machine but wants to avoid getting caught, so the hacker finds another system to take the blame. This system is frequently called a zombie machine because it's disposable and creates a good distraction. Which of the following port scans is being used?

Fingerprinting

Randy is an ethical hacker student. He has learned how nmap flag manipulation can help find open ports. Although the name of the operating system did not jump right out at him, he might be able to figure it out by reviewing packet information. In a packet, Randy can see a TTL of 255 and a window size of 4128. What type of scanning process is Randy using?

PSH

Which of the following flags is used by a TCP scan to direct the sending system to send buffered data?

Colasoft

Which of the following packet crafting software programs can be used to modify flags and adjust other packet content?

Port scan

Which of the following scans is used to actively engage a target in an attempt to gather information about it?