Quiz Questions 1-5

 Question 1 1 out of 1 points _____ is an open-source operating system whose source code is freely available to everyone. Selected Answer: a. Linux Answers: a. Linux b. Mac OS X c. Chrome d. UNIX Response Feedback: a Linux is an OS developed in 1991 by Linus Torvalds as a student in Finland. The OS is distributed under the GNU General Public License, and its source code is freely available to everyone. It is, therefore, called an open-source operating system.  Question 2 1 out of 1 points A _____ is a climate- and access-controlled building or a set of buildings that houses the computer hardware that delivers an organization’s data and information services. Selected Answer: c. data center Answers: a. data mart b. data warehouse c. data center d. data mine Response Feedback: c A data center is a climate- and access-controlled building or a set of buildings that houses the computer hardware that delivers an organization’s data and information services.  Question 3 1 out of 1 points New cars come with onboard computer systems that control antilock brakes, air bag deployment, fuel injection, etc. They run operating system software known as ____. Selected b. Answer: an embedded operating system Answers: a. a multi-user operating system b. an embedded operating system c. an enterprise operating system d. mobile application software Response b Feedback: An embedded system is a computer system that is implanted in and dedicated to the control of another device often within a larger mechanical or electrical system. The typical car contains many embedded systems, including those that control antilock brakes, air bag deployment, fuel injection, active suspension devices, transmission control, and cruise control. An embedded operating system is designed to run in computers with a limited amount of memory and it must be highly reliable.  Question 4 1 out of 1 points Which of the following statements is NOT true about a mainframe computer? Selected Answer: a. A single computer with a single user is typical of a mainframe computer. Answers: a. A single computer with a single user is typical of a mainframe computer. b. A mainframe computer provides the computing and storage capacity to meet massive data processing requirements c. A mainframe computer can support dozens or even hundreds of concurrent users. d. A key feature of mainframe computers is their backward compatibility. Response a Feedback: A mainframe computer is a large, powerful computer shared by dozens or even hundreds of concurrent users connected to the machine over a network. Mainframe computers provide the data-processing power and data storage capacity that enables banks and brokerage firms to deliver new mobile services, credit card companies to detect identity theft, and government agencies to better serve citizens. A key feature of mainframe computers is backward compatibility or the ability of current mainframes to run software created decades ago.  Question 5 1 out of 1 points Completing an instruction involves two phases—instruction and execution—which are each broken down into two steps for a total of four steps. Which of the following is NOT one of the four steps? Selected Answer: d. process data Answers: a. fetch instruction b. store results c. execute instruction d. process data Response Feedback: d Completing an instruction involves two phases (instruction or I-Time, and execution or E-Time), which are broken down into the following four steps. Instruction phase: Fetch instruction. The computer reads the next program instruction to be executed—along with any necessary data—into the processor. The instruction and data are typically held in a storage register.  Decode instruction. The instruction is decoded and passed to the appropriate processor execution unit. Execution phase:    Execute instruction. The computer executes the instruction by making an arithmetic computation, logical comparison, bit shift, or vector operation. Store results. The results are stored in temporary storage locations called registers or in memory.