Chapter 10 1 Which of the following kinds of modems is a modem that sends and receives digital data over and information to and from a digital line a Broadband 2 The type of network shown in the accompanying figure describes a network in which each computer has equal responsibilities and capabilities What is this kind of network called 3 Which of the following terms is an electrical disturbance that can a P2P degrade communications a Noise use a peer to peer signal transmission a Microwaves 4 Which of the following is the least likely technology PANs would 5 Which of the following are radio waves that provide a high speed 6 Which of the following can be avoided if a computer or mobile device has a motherboard that integrates networking capability 7 Which of the following is true of DSL a NIC a It is a popular digital line alternative for the small business or home user bus network 8 Which of the following is the greatest problem with regard to a a The bus itself might become inoperable a ATM 9 Which of the following has the fastest transfer rate 10 Which of the following is a network standard that specifies no central computer or device on the network should control when data can be transmitted a Ethernet 12 13 14 15 16 17 18 11 The design of computers devices and media in a network is categorized as either client server or peer to peer What is the term used to refer to this characterization a Network architecture Which of the following kinds of cable consists of a single copper wire surrounded by at least three layers an insulating material a woven or braided metal and a plastic outer coating Which of the following terms is the time it takes a signal to a Coaxial travel from one location to another on a network a Latency a NFC Which of the following defines how a network uses close range radio signals to communicate between two devices or objects equipped with this technology Which of the following kinds of devices is any type of hardware capable of transmitting data instructions and information between a sending device and a receiving device a Communications a WLAN a NIC Which of the following is a LAN that uses no physical wires Which of the following enables a computer or device that does not have built in networking capability to access a network Which of the following defines guidelines that specify the way computers access the medium to which they are attached the type s of medium used the speeds used on different types of networks and the type s of physical cable and or the wireless technology used a Network Standard a Fixed Wireless 19 Microwave transmission involves sending signals from one microwave station to another What is this often called 20 21 22 23 The amount of data instructions and information that can travel over a communications channel sometimes is called which of the following a Bandwidth Which of the following is a transmission media on which data instructions or information travel a Communications Channel Which of the following terms identifies any network based on the 802 11 family of standards Which of the following is the data transfer rate equivalent to one million bits per second a WI FI a Mbps 24 Which of the following is a wireless transmission medium that distributes radio signals through the air over long distances a Broadcast Radio 25 Which of the following is a simple inexpensive network that typically connects fewer than 10 computers a Peer to Peer Network 1 Which of the following kinds of values is the one that a DBMS Chapter 11 initially displays in a field a Default 2 What is the process of comparing data with a set of rules or values to find out if the data is correct 3 Which of the following is a program with which users interact that generally has a more user friendly interface than a DBMS a Validation a Front End 4 A DBMS uses which of the following to perform validation 5 Which of the following is an item that contains data as well as the actions that read or process the data 6 The developer of a relational database refers to a file as which of 7 The developer of a relational database refers to a record as checks a Data Dictionary a Object the following a Relation which of the following a Tuple 8 In what kind of recovery does the DBMS use the log to undo any changes made to a database during a certain period 9 In what kind of recovery does the DBMS use the log to reenter changes made to a database since the last save or backup 10 Which of the following is a collection of data organized in a manner that allows access retrieval and use of that data a Backward a Forward a Database Compared with relational databases which of the following is NOT true of object oriented databases a They store unstructured information less efficiently The developer of a relational database refers to a field as 11 12 13 which of the following a Attribute data current a File Maintenance Which of the following refers to the procedures that keep 14 An application that supports a front end program sometimes is called which of the following a Back End 15 Object oriented and object relational databases often use a query language to manipulate and retrieve data What is the name of this query language a OQL 16 Which of the following privileges for data involve establishing who can enter new data change existing data delete unwanted data and view data a Access a Relational 17 18 Which of the following is a database that stores data in tables that consist of rows and columns Which of the following kinds of backup are used by organizations such as hospitals communications companies and financial institutions 19 Which of the following kind of checks is a validity check performed on data like that in the accompanying figure which ensures users enter only alphabetic data into a field a Continuous a Alphabetic 20 Which of the following languages consists of simple English like statements that allow users to specify the data to display print or store 21 Most of this kind of database products for servers and mainframes include SQL an example of which is shown in the accompanying figure What kind of database product is this a Query 22 Which of the following is a huge database that stores and manages the data required to analyze historical and current transactions a Relational Which of the following identifies the quality of data in a a Data Warehouse database a Data Integrity In managing a company s database which of the following roles requires a technical inside view of
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