'Project Loon', sometimes seen in the news, is related to
- A.waste management technology
- B.wireless communication technology
- C.solar power production technology
- D.water conservation technology
Correct answer
Explanation
The correct answer is B, wireless communication technology. Project Loon used high-altitude balloons to beam internet access to remote areas.
Project Loon was developed by X, the research lab of Google's parent company Alphabet, and began trials in New Zealand in 2013. Large solar-powered balloons floated in the stratosphere, about 18 to 20 kilometres up, and acted as floating cell towers, passing an LTE signal from balloon to balloon and down to phones on the ground. Software steered each balloon by moving it up or down into winds blowing in the right direction. Loon gave emergency connectivity in Puerto Rico after Hurricane Maria in 2017 and in Peru after an earthquake, before Alphabet shut the project down in 2021.
A is wrong: Loon had nothing to do with treating or recycling waste.
C is wrong: the balloons used solar panels only to power themselves, not to produce power for others.
D is wrong: it was not a water project.
Exam tip: Project Loon = Alphabet's stratospheric balloons for internet (2013-2021); compare Starlink, which uses low-earth-orbit satellites.
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 →