To start the Computer Management Console from command line just type compmgmt.msc /computer:computername in your run box or at the command line and it should automatically open the Computer Management console.
References: http://www.waynezim.com/tag/compmgmtmsc/

The OSI layer 2 is where packet sniffers collect their data.
References: https://en.wikipedia.org/wiki/Ethernet_frame

You requested a scan type which requires root privileges.
References: http://askubuntu.com/questions/433062/using-nmap-for-information-regarding-web-host

command = nmap -T4 -F
description = This scan is faster than a normal scan because it uses the aggressive timing template and scans fewer ports.

References: https://svn.nmap.org/nmap/zenmap/share/zenmap/config/scan_profile.usp

Ransomware is a type of malware that can be covertly installed on a computer without knowledge or intention of the user that restricts access to the infected computer system in some way, and demands that the user pay a ransom to the malware operators to remove the restriction. Some forms of ransomware systematically encrypt files on the system’s hard drive, which become difficult or impossible to decrypt without paying the ransom for the encryption key, while some may simply lock the system and display messages intended to coax the user into paying. Ransomware typically propagates as a Trojan.

References: https://en.wikipedia.org/wiki/Ransomware

Cryptcat enables us to communicate between two systems and encrypts the communication between them with twofish.
References: http://null-byte.wonderhowto.com/how-to/hack-like-pro-create-nearly-undetectable-backdoor-with-cryptcat-0149264/

In computer science, a zombie is a computer connected to the Internet that has been compromised by a hacker, computer virus or trojan horse and can be used to perform malicious tasks of one sort or another under remote direction. Botnets of zombie computers are often used to spread e-mail spam and launch denial-of-service attacks. Most owners of zombie computers are unaware that their system is being used in this way. Because the owner tends to be unaware, these computers are metaphorically compared to zombies. A coordinated DDoS attack by multiple botnet machines also resembles a zombie horde attack.

Incorrect Answers:

B: Turtle Trojans are about getting backdoor access to an intruder.
C: A Banker Trojan-horse (commonly called Banker Trojan) is a malicious program used in an attempt to obtain confidential information about customers and clients using online banking and payment systems.
D: Ransomware is a type of malware that can be covertly installed on a computer without knowledge or intention of the user that restricts access to the infected computer system in some way, and demands that the user pay a ransom to the malware operators to remove the restriction. Some forms of ransomware systematically encrypt files on the system’s hard drive, which become difficult or impossible to decrypt without paying the ransom for the encryption key, while some may simply lock the system and display messages intended to coax the user into paying. Ransomware typically propagates as a Trojan.

References: https://en.wikipedia.org/wiki/Botnet

Bluetooth is a standard for the short-range wireless interconnection of mobile phones, computers, and other electronic devices.

References: http://www.bbc.co.uk/webwise/guides/about-bluetooth

The following ports are associated with file sharing and server message block (SMB) communications:
Microsoft file sharing SMB: User Datagram Protocol (UDP) ports from 135 through 139 and Transmission Control Protocol (TCP) ports from 135 through 139.

Direct-hosted SMB traffic without a network basic input/output system (NetBIOS): port 445 (TCP and UPD).
References: https://support.microsoft.com/en-us/kb/298804

Watering Hole is a computer attack strategy, in which the victim is a particular group (organization, industry, or region). In this attack, the attacker guesses or observes which websites the group often uses and infects one or more of them with malware. Eventually, some member of the targeted group gets infected.

Incorrect Answers:

B: Heartbleed is a security bug disclosed in April 2014 in the OpenSSL cryptography library, which is a widely used implementation of the Transport Layer Security (TLS) protocol. Heartbleed may be exploited regardless of whether the party using a vulnerable OpenSSL instance for TLS is a server or a client. It results from improper input validation (due to a missing bounds check) in the implementation of the TLS heartbeat extension, thus the bug’s name derives from “heartbeat”.
C: Shellshock, also known as Bashdoor, is a family of security bugs in the widely used Unix Bash shell, the first of which was disclosed on 24 September 2014. Many Internet-facing services, such as some web server deployments, use Bash to process certain requests, allowing an attacker to cause vulnerable versions of Bash to execute arbitrary commands. This can allow an attacker to gain unauthorized access to a computer system.
D: Spear phishing is an email or electronic communications scam targeted towards a specific individual, organization or business.

References: https://en.wikipedia.org/wiki/Watering_Hole