1. Which computer component is considered the nerve center of the computer system and is responsible for processing all of the data within the machine? 2. What are two advantages of purchasing a preassembled computer? (Choose two. 3. A user plans to run multiple applications simultaneously on a computer. Which computer component is essential to accomplish this? 4. Which adapter card enables a computer system to exchange information with other systems on a local network? 5. What is the main storage drive used by servers, desktops, and laptops? 6. Which component is designed to remove high-voltage spikes and surges from a power line so that they do not damage a computer system? 7. What are two examples of output peripheral devices? (Choose two. )
8. What two functions does a UPS provide that a surge protector does not? (Choose two. ) 9. What is a word processor? It is a physical computer component. * It is a program designed to perform a specific function. It is a program that controls the computer resources. It is a functional part of an operating system. 10. What is the purpose of the ASCII code? * represents letters, characters, and numbers with bits 11.
Why do servers often contain duplicate or redundant parts? Servers require more power and thus require more components. * Servers should be accessible at all times. Servers can be designed as standalone towers or rack mounted. Servers are required by networking standards to have duplicate parts. 12. What are two benefits of hooking up a laptop to a docking station? (Choose two. ) Mobility is increased. * An external monitor can be used. * Alternate connectivity options may be available. The keyboard can be changed to a QWERTY-style keyboard. More wireless security options are available. 13. Applications can be grouped into general use software or industry specific software. What are two examples of industry specific software? (Choose two. ) 14. Which three terms describe different types of computers? (Choose three. ) 15. How is a server different from a workstation computer? The server works as a standalone computer. * The server provides services to clients. The workstation has fewer applications installed. The workstation has more users who attach to it. 16. How many values are possible using a single binary digit? 17.
What measurement is commonly associated with computer processing speed? 18. What can be used to prevent electrostatic discharge (ESD)? 19. If a peripheral device is not functioning, what are three things you should do to solve the problem? (Choose three. ) * Use the testing functionality on the peripheral itself, if available. * Verify that all cables are connected properly. Disconnect all cables connected to the computer except those connected to the peripheral. * Ensure that the peripheral is powered on. Disconnect the peripheral and verify that the computer is operating normally. Reload the computer operating system. 20. Which two steps should be performed when installing a peripheral device? (Choose two. ) * Download and install the most current driver. Connect the peripheral using any cable and any available port on the computer. * Connect the peripheral using an appropriate cable or wireless connection. Test the peripheral on another machine before installing it on the one where it will be used. Check the computer documentation to see if the peripheral vendor is compatible with the PC vendor. 21. In newer operating systems, how are system resources assigned by default when components are installed?
Sometimes for fault tolerance and sometimes because servers handle a lot of traffic and need extra capacity to handle the heavy demands. For example, most servers will have at least 2 CPU s (central processing units). These are the main processors of the computer where most of the computations and command executions occur. A lot of enterprise applications take advantage of multi-core (more than one CPU) systems and this can dramatically improve performance. Most servers will also have redundant NICs (network interface cards). This is the network interface all requests to and from the server must go through. Depending on how the NICs are configured this can provide fault tolerance if one of the NICs fails, but can also provide greater throughput to the network if the NICs are teamed correctly to allow requests to flow through both NICs. Servers also have redundant hard drives which are typically mirrored so that data is actually copied across multiple drives so that if one fails your server will continue to function and no data is lost.