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Questions in computers-and-technology

[Free] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Free] What is an element of the user interface on which the user can click to execute a command, such as confirm, cancel, or exit? A. Button B. Icon C. Submenu D. Drop down box E. Mouse pad

[Free] Which best describes Internet wikis as a source of scientific information? A. Wikis are good sources of reliable scientific information. B. Wikis are written only by experts in their fields. C. Wikis are always extensively peer reviewed. D. Wikis are written or edited by anyone.

[Free] Blue 'add' buttons are used throughout the SimChart for the Medical Office system to make changes to patient accounts. True False

[Free] Apply conditional formatting to the selected cells so cells with a value greater than 400 are formatted using a light red fill.

[Free] What does the acronym STEM stand for? A. Science and Technology Educational Methods B. Science, Technology, Engineering, and Mathematics C. Study, Think, Educate, and Move D. Study Technology, Engineering, and Math

[Free] When it comes to early childhood, what does STEM education refer to? A. The set of skills and knowledge used in the fields of Science, Technology, Engineering, and Mathematics. B. The careers offered in the fields of Science, Technology, Engineering, and Mathematics. C. The courses taught that lead to careers in the fields of Science, Technology, Engineering, and Mathematics. D. The degree paths offered in the fields of Science, Technology, Engineering, and Mathematics.

[Free] A) Star topology B) Ring topology C) Bus topology D) Mesh topology 7. What is the primary function of the transport layer? A) Data formatting B) Error detection C) Reliable data transfer D) Physical transmission 8. Which of the following is NOT a type of network protocol? A) Network communication protocols B) Network management protocols C) Network application protocols D) Network security protocols 9. What does CSMA/CD stand for? A) Carrier Sense Multiple Access with Collision Detection B) Carrier Sense Multiple Access with Collision Avoidance C) Communication Sense Multiple Access with Collision Detection D) None of the above 10. Which layer of the TCP/IP model handles the physical transmission of data? A) Internet layer B) Datalink layer C) Transport layer D) Application layer 11. What is a primary characteristic of a LAN? A) Covers large geographical areas B) High-speed data transfer rates C) Managed by external organizations D) Lower fault tolerance 12. Which protocol is used for secure HTTP communication? A) FTP B) SMTP C) HTTPS D) TCP 13. What does the application layer refer to? A) Hardware specifications B) User interface interactions C) Physical connections D) Data packet routing 14. Which one of the following is the application of Client-side programs? A) Makes interactive web pages B) Make stuffs work dynamically C) Interact with local storage D) all are answer 15. What is the main purpose of network security protocols?

[Free] Which command is used to install packages in R? A) install.packages("packageName") B) load.packages("packageName") C) add.packages("packageName") D) setup.packages("packageName")

[Free] What is the primary function of the RStudio Console? A) To display help documentation B) To execute R scripts line by line C) To manage R projects D) To write and execute R scripts