The terms 'WannaCry, Petya and EternalBlue' sometimes mentioned in the news recently are related to
- A.Exoplanets
- B.Cryptocurrency
- C.Cyber attacks
- D.Mini satellites
Correct answer
Explanation
The correct answer is C, Cyber attacks. WannaCry and Petya are ransomware, and EternalBlue is the Windows exploit that helped them spread.
EternalBlue was a hacking tool that exploited a flaw in Microsoft Windows' Server Message Block, the protocol computers use to share files over a network. It was developed by the United States National Security Agency and leaked online in April 2017 by a group called the Shadow Brokers. Within weeks, the WannaCry ransomware used it to infect more than two lakh computers in about 150 countries, locking files and demanding payment in Bitcoin; Britain's National Health Service was among the worst hit. In June 2017 a destructive variant of Petya, often called NotPetya, used the same exploit against companies in Ukraine and beyond. Microsoft had issued a patch in March 2017.
A is wrong because exoplanets are planets outside our solar system. B is wrong because Bitcoin was only the ransom currency, not what the names refer to. D is wrong because none of them is a satellite.
Exam tip: ransomware locks files and demands payment; WannaCry 2017 spread through EternalBlue.
Practice Questions
View allWhich one among the following is not a part of the SWAYAM programme?
- A.Video lectures
- B.Classroom lectures
- C.Online discussion forum for clearing doubts
- D.Specially prepared material that can be downloaded/printed
Show answer
SWAYAM is an online learning platform, so live classroom lectures are not one of its parts.
Read the full explanation →Which one among the following consists of a list of commands that is executed automatically as the computer system starts up ?
- A.COMMAND.COM
- B.AUTOEXEC.BAT
- C.CONFIG.SYS
- D.AUTOSTART.BAT
Show answer
It is the batch file that MS-DOS runs automatically, line by line, every time the computer starts. A batch file is a plain text file of DOS commands with the.BAT extension.
Read the full explanation →Which one among the following is NOT true about Standard Generalised Markup Language (SGML)?
- A.It is an international open standard
- B.It is dependent on a computer's hardware
- C.It is independent of a computer's operating system
- D.It defines document type
Show answer
SGML was designed to be independent of both hardware and software, so saying it depends on a computer's hardware is false.
Read the full explanation →Which one among the following tasks is NOT carried out by an operating system?
- A.To link a program with the subroutines it references
- B.To manage data transfer to and from peripherals
- C.To allocate memory for storing programs
- D.To provide a layered, user-friendly interface
Show answer
Joining a program to the library routines it calls is the job of a linker, a separate system utility, not of the operating system.
Read the full explanation →Which one among the following protocols works at application layer in a TCP/IP protocol suite?
- A.IP
- B.TCP
- C.TELNET
- D.Go-back-N
Show answer
TELNET is an application-layer protocol that lets a user log in to a remote computer and work on it through a text terminal.
Read the full explanation →