Reference no: EM13751686
1. In a multi-tiered network:
a. the work of the entire network is centralized. b. the work of the entire network is balanced over several levels of servers. c. processing is split between clients and servers. d. processing is handled by multiple, geographically remote clients.
2. A client computer networked to a server computer, with processing split be tween the two types of machines, is called a(n):
a. service-oriented architecture. b. on-demand architecture. c. multi-tiered client/server architecture. d. two-tiered client/server architecture.
3. The primary storage technologies are:
a. storage networks, magnetic tape, magnetic disk, and optical disk. b. hard drives, magnetic tape, magnetic disk, and optical disk. c. storage networks, magnetic disks, hard disks, and optical disks. d. hard drives, removable drives, storage networks, and magnetic tape.
4. Which of the following is a type of optical disk storage?
a. CD-ROM b. Hard drive c. USB Flash drive d. Magnetic tape
5. Which of the following storage technology stores data sequentially?
a. CD-ROM b. RAID c. Magnetic disks d. Magnetic tape
6. A high-speed network dedicated to storage that connects different kinds of storage devices, such as tape libraries and disk arrays so they can be shared by multiple servers best describes:
a. SSN. b. ASP. c. LAN. d. SAN.
7. Which of the following is a device used to collect data directly from the envi ronment for input into a computer system?
a. Sensor b. Touch screen c. Audio input d. Trackball
8. What type of device gathers data and converts them into electronic form for use by the computer?
a. Output device b. Input device c. Optical storage d. Magnetic storage
9. Which of the following is not a type of output device?
a. Speakers b. Cathode ray tube c. Ink jet printer d. Keyboard
10. In a relational database, a record is also called a(n):
a. Tuple b. Part c. Entity d. Field
11. A field identified in a table as holding the unique identifier of the table's records is called the:
a. primary key. b. key field. c. primary field. d. foreign key.
12. A field identified in a record as holding the unique identifier for that record is called the:
a. primary key. b. key field. c. primary field. d. foreign key.
13. A schematic of the entire database that describes the relationships in a data base is called a(n):
a. data dictionary. b. intersection relationship diagram. c. entity-relationship diagram. d. data definition diagram.
14. A one-to-one relationship between two entities is symbolized in a diagram by a line that ends:
a. in two short marks. b. in one short mark. c. with a crow's foot. d. with a crow's foot topped by a short mark.
15. A one-to-many relationship between two entities is symbolized in a diagram by a line that ends:
a. in two short marks. b. in one short mark. c. with a crow's foot. d. with a crow's foot topped by a short mark.
16. A table that links two tables that have a many-to-many relationship is often called a(n):
a. derived table. b. intersection relation. c. foreign table. d. entity-relationship table.
17. The process of streamlining data to minimize redundancy and awkward many-to-many relationships is called:
a. normalization. b. data scrubbing. c. data cleansing. d. data administration.
18. Which type of network is used to connect digital devices within a half-mile or 500-meter radius?
a. Microwave b. LAN c. WAN d. MAN
19. Which type of network treats all processors equally, and allows peripheral devices to be shared without going to a separate server?
a. Peer-to-peer b. Wireless c. LAN d. Ring
20. Which type of network would be most appropriate for a business that com prised three employees and a manager located in the same office space, whose primary need is to share documents?
a. Wireless network in infrastructure mode b. Domain-based LAN c. Peer-to-peer network d. Campus area network
21. In a bus network:
a. signals are broadcast to the next station. b. signals are broadcast in both directions to the entire network. c. multiple hubs are organized in a hierarchy. d. messages pass from computer to computer in a loop.
22. All network components connect to a single hub in a:
a. star network b. bus network c. domain network d. peer-to-peer network
23. The most common Ethernet topology is:
a. bus. b. star. c. ring. d. mesh.
24. A network that spans a city, and sometimes its major suburbs as well, is an example of a:
a. CAN b. MAN c. WAN d. LAN
25. A network that covers a large geographic area is most commonly referred to as a(n):
a. local area network. b. Intranet. c. peer-to-peer network. d. wide area network.
1. Describe the major components of IT infrastructure.
2. What types of relationships are possible in a relational database? Describe and give an example of each.
3. What are the business advantages of using voice over IP (VoIP) technology?