Business Information Technology
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Course Introduction
Business Information Technology explores the intersection of business processes and information systems, focusing on how technology can be leveraged to improve organizational performance and decision-making. The course covers key topics such as information systems fundamentals, database management, e-business strategies, enterprise resource planning, and cybersecurity. Students will examine real-world case studies to understand the strategic value of IT in a business context, while also developing practical skills in analyzing, designing, and implementing technology-based solutions to support business objectives. Through collaborative projects and hands-on exercises, participants gain a thorough understanding of how information technology drives innovation and adds value in modern enterprises.
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Business Data Communications Infrastructure Networking and Security 7th Edition by William Stallings
Chapter 1: Introduction
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Q1) Cloud computing is being embraced by all major business software vendors with the exception of Oracle.
A)True
B)False
Answer: False
Q2) The number of computers and terminals at work in the world today is over 100 million.
A)True
B)False
Answer: True
Q3) Convergence can be thought of in terms of a three-layer model of enterprixe communications: applications,enterprise services,and _________. Answer: infrastructure
Q4) Mobility is the newest frontier for ICT managers.
A)True
B)False
Answer: True
Q5) The type of network commonly used at business premises is called a __________. Answer: Local Area Network (LAN)
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Chapter 2: Business Information
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Q1) The time interval between when a user presses a key and when the result of that action arrives at his or her workstation is called the:
A)response time
B)turn-around time
C)think time
D)delay time
Answer: A
Q2) ________ files contain very little formatting and do not support formatting such as boldface,italics,or underline.
Answer: Text
Q3) The _________ service supports the communication of individual pictures,charts,or drawings.
Answer: image
Q4) Common examples of data include text and numerical information.
A)True
B)False
Answer: True
Q5) A representation of images that uses an array of pixels is called ______. Answer: raster graphics
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Chapter 3: Distributed Data Processing
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Q1) _________ are specialized computers that provide services for clients such as database services,printing services,and communication services.
Answer: Servers
Q2) No redundancy guarantees for servers,storage systems,network equipment, and communication connections to Internet or other networks; single path for power and cooling distribution; no redundant components; and availability: 99.671% are _________ characteristics of data centers.
A)Tier 1
B)Tier 2
C)Tier 3
D)Tier 4
Answer: A
Q3) Database applications are always distributed applications.
A)True
B)False
Answer: False
Q4) An _________ provides users of client devices with applications associated with the Internet but isolated within the organization.
Answer: intranet
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Chapter 4: Data Transmission
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Q1) Analog signals differ from digital signals in that:
A)analog signals are represented versus time while digital signals are measured versus frequency
B)analog signals are periodic,digital signals are not
C)analog signals are continuous while digital signals remain at one constant level and then move to another constant level
D)analog signals operate at higher frequencies than digital signals
Q2) Attenuation is greater at lower frequencies.
A)True
B)False
Q3) The loudness of a signal is measured by its amplitude.
A)True
B)False
Q4) Given a resolution of 320 pixels x 240 pixels,1 byte of color information per pixel and a transmission rate of 30 frames per second,calculate the bandwidth necessary for this signal:
A)18.4 Mbps
B)2.3 Mbps
C)18.4 Kbps
D)6 Mbps
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Chapter 5: Data Communication Fundamentals
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Q1) Asynchronous transmission includes a start and stop bit with each character transmitted to ensure:
A)that the total number of bits is a factor of 10
B)to allow a continuous stream of data
C)to prevent single bit errors from occurring
D)to allow the receiver to maintain synchronization with the sender
Q2) ________ data take on discrete values; examples are text,integers,and binary data.
Q3) One of the main differences between amplifiers and repeaters is that:
A)amplifiers forward noise as well as data
B)amplifiers clean the signal and then forward it
C)amplifiers increase the amount of attenuation
D)amplifiers focus primarily on digital signals
Q4) Error detection requires that extra bits be introduced into the data stream.
A)True
B)False
Q5) An _________ is a continuously varying electromagnetic wave that may be transmitted over both guided and unguided media.
Q6) The mapping from binary digits to signal elements is the ________ scheme.
Q7) A _______ modem permits Internet access over cable television networks.
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Chapter 6: Data Link Control and Multiplexing
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Q1) ________ uses multiple carrier signals at different frequencies,sending some of the bits on each channel.
A)FWD
B)DMT
C)WDM
D)TDM
Q2) Sliding window is one form of error control.
A)True
B)False
Q3) One of the most popular forms of synchronous TDM is known as ________.
Q4) With ________ the light steaming through the fiber consists of many colors,or wavelengths,each carrying a separate channel of data.
A)LCF
B)WDM
C)TDM
D)FWD
Q5) To prevent interference,the channels are separated by ________,which are unused portions of the spectrum.
Q6) The higher the ________ rate,the more cost-effective the transmission facility.
Page 8
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Chapter 7: The Internet
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Q1) The ________ is a company that provides backbone service to an ISP.
A)NSP
B)CO
C)IXP
D)CPE
Q2) The first "killer application" for the ARPANET was ________.
A)Telnet
B)FTP
C)email
D)remote login
Q3) A paradigm for electronic communications where messages are split into blocks of data with limited size,which are then transmitted one-by-one across the network is called _________.
A)message switching
B)circuit switching
C)packet switching
D)data switching
Q4) The Internet is able to support communications using the ________ suite or its subsequent extensions / follow-ons,and / or other IP-compatible protocols.
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Chapter 8: Tcp / Ip
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Q1) There are many protocols and technologies to select from when building an entire communication system.
A)True
B)False
Q2) UDP provides guaranteed delivery of messages.
A)True
B)False
Q3) Which of the following is a commonly used set of standards for computer communications?
A)SLA
B)ISO
C)POP
D)TCP / IP
Q4) The ________ layer is concerned with the exchange of data between a computer and the network to which it is attached.
A)transport
B)application
C)network access
D)physical
Q5) The standard network management protocol for TCP / IP networks is _________.
Page 10
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Chapter 9: Client Server, intranet, and Cloud Computing
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Q1) __________ products are typically based on one of three underlying mechanisms: message passing,remote procedure calls,and object-oriented mechanisms.
Q2) A cloud broker evaluates the services provided by a cloud provider in terms of security controls,privacy impact,performance,and so on.
A)True
B)False
Q3) A benefit of extranets is:
A)reduced costs
B)coordination
C)customer satisfaction
D)all of the above
Q4) Traditional client / server architecture is also called 3-tier architecture.
A)True
B)False
Q5) A ________ is a computer,usually a high-powered workstation or a mainframe,that houses information for manipulation by networked clients.
Q6) ________ is a language developed by IBM and standardized by ANSI for addressing,creating,updating,or querying relational databases.
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Chapter 10: Internet-Based Applications
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Q1) In order to be compliant,a mail system must include all five of the additional MIME headers.
A)True
B)False
Q2) End users should not run virus protection software that examines incoming mail because the administrators of the email servers have already checked for viruses.
A)True
B)False
Q3) A _______ is a network data object or service that can be identified by a URL.
Q4) Email functions visible to a user,such as facilities for preparing and submitting messages,filing,replying,and forwarding,are considered:
A)message transfer agent functions
B)client functions
C)email client functions
D)user agent functions
Q5) SMTP can be used to send executable files and other binary file types.
A)True
B)False
Q6) HTTP is a ________ protocol; each transaction is treated independently.
Page 12
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Chapter 11: Internet Operation
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Q1) The _________ in an internet are responsible for receiving and forwarding packets through the interconnected set of networks,making routing decisions based on knowledge of the topology and traffic / delay conditions of the internet.
A)gateways
B)routers
C)channels
D)links
Q2) Multiple IP addresses referring to a block of CIDR addresses can be identified with a single mask,a process known as __________ .
A)uni-masking
B)OSPF
C)supernetting
D)block masking
Q3) One way to assure that the packet is received by all members of the group is to ___________ a copy of each packet to each network in the configuration,over the least-cost route for each network.
Q4) __________ is an identifier for a single interface in which a packet is delivered to the interface identified by that address.
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Chapter 12: Lan Architecture and Infrastructure
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Q1) Sometimes called computer room networks,__________ networks are used to interconnect large systems such as mainframes,supercomputers,and mass storage devices that typically need to transfer large volumes of data between one another.
Q2) Traditionally,twisted pair has been the workhorse for communications of all sorts.
A)True
B)False
Q3) A design factor relating to the transmission medium and the signal to determine the data rate and distance is:
A)bandwidth
B)transmission impairments
C)interference
D)all of the above
Q4) The major difference between Category 3 UTP and Category 5 UTP is that the latter uses a larger sized wire for the conductors.
A)True
B)False
Q5) Twisted pair comes in two varieties: unshielded and _________.
Q6) Two different types of light source are used in fiber optic systems: LED and
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Chapter 13: Ethernet, switches, and Virtual Lans
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Q1) A MAC frame includes various bit patterns to enable a receiver to correctly recognize key parts of the information contained in the frame.
A)True
B)False
Q2) Network topology refers to the way individual end stations access the network prior to transmission of user data.
A)True B)False
Q3) Two general approaches to connecting multiple LANs are bridges and switches. A)True B)False
Q4) This short-wavelength option supports duplex links of up to 275 m using 62.5- m multimode or up to 550 m using 50- m multimode fiber.Wavelengths are in the range of 770-860 nm.
A)1000BASE-SX
B)1000BASE-T
C)1000BASE-LX
D)1000BASE-CX
Q5) A _________ provides a means of interconnecting similar LANs.
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Chapter 14: Wireless Lans
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Q1) A station of this type either is stationary or moves only within the direct communication range of the communicating stations of a single BSS.
A)ISS transition
B)no transition
C)BSS transition
D)ESS transition
Q2) Wireless LAN applications typically employ control modules that link wireless LANs to wired LANs.
A)True
B)False
Q3) The two frequency bands typically used by IEEE 802.11 wireless networks are located approximately at 900 MHz and 2.4 GHz.
A)True
B)False
Q4) A basic service set (BSS)is:
A)the smallest building block of a wireless LAN
B)the same as an access point
C)the same as a control module
D)always connected to a backbone distribution system
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Chapter 15: Wan Technology and Protocol
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Q1) In a __________ network ,data entering the network from a station are routed to the destination by being switched from node to node.
A)packet switching
B)simple switching
C)switched communication
D)all of the above
Q2) An advantage of packet switching over circuit switching is:
A)line efficiency is better
B)priorities can be used
C)can carry out data-rate conversion
D)all of the above
Q3) The choice between circuit and packet switching depends on a host of considerations,including cost,performance,reliability, and flexibility.
A)True
B)False
Q4) A public telecommunications network can be described using four generic architectural components: subscribers,subscriber line,exchanges,and _________.
Q5) ________ signals identify a subscriber.
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Chapter 16: Wan Services
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Q1) _____________notifies the user that congestion avoidance procedures should be initiated where applicable for traffic in the opposite direction of the received frame.
Q2) Traffic leaving a network or internal telephone system is separated into different lines and then sent to the service provider.
A)True
B)False
Q3) ___________ notifies the user that congestion avoidance procedures should be initiated where applicable for traffic in the same direction as the received frame.
Q4) Which of the following are WAN protocols?
A)Frame Relay
B)T-1
C)SONET
D)all of the above
Q5) Selecting a WAN protocol for a particular business is a fairly simple task given current pricing structures and business traffic patterns.
A)True
B)False
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Chapter 17: Wireless Lans
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Q1) With ____________,a cell is divided into a number of wedge shaped sectors,each with its own set of channels,typically three or six sectors per cell.
Q2) The WAP Programming Model uses a ________ that acts as a proxy server for the wireless domain.
A)translator
B)WAP server
C)gateway
D)decoder
Q3) The specific base station that communicates with the mobile unit is selected by the MTSO based on the strength of the signal received from the mobile unit.
A)True
B)False
Q4) There are basically four ways to divide the spectrum among active users: frequency division multiple access (FDMA),time division multiple access (TDMA),code division multiple access (CDMA),and ______________.
Q5) The electronics in the satellite that takes an uplink signal and converts it to a downlink signal is called a _________ .
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Chapter 18: Computer and Network Security Threats
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Q1) The stage of a virus where it is activated to perform the function for which it was intended is referred to as the _________.
A)propagation phase
B)triggering phase
C)execution phase
D)none of the above
Q2) All parasitic malware is software that replicates.
A)True
B)False
Q3) The three key objectives of computer security are confidentiality, integrity,and availability.
A)True
B)False
Q4) _________ are in the nature of eavesdropping on,or monitoring of, transmissions.The goal of the attacker is to obtain information that is being transmitted.
Q5) A _________ propagates itself and activates itself,whereas a bot is controlled from some central facility,at least initially.
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Chapter 19: Computer and Network Security Techniques
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Q1) ___________ is a set of protocols for providing encryption,authentication,and key management for IP.
Q2) The SSL Record Protocol provides two services for SSL connections: confidentiality and ___________.
Q3) A _________ is a hardware or software entity inserted between a system or network to be protected and the Internet or other outside access network to control traffic in both directions to enforce a security policy.
Q4) Ipsec is based primarily upon the DES standard.
A)True
B)False
Q5) The most complex part of SSL is the ___________ Protocol.
A)Handshake
B)Change Cipher Spec
C)Alert
D)Record
Q6) _________ mode is used when at least one of the two ends is a security gateway, such as a firewall or router,that implements IPsec.
Q7) Malware defense can involve a combination of prevention,__________,and removal.
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Q8) An IDS comprises three logical components: sensors,user interface,and _______.