Information Systems
Exam Materials
Course Introduction
This course explores the fundamental principles and practices of Information Systems (IS), emphasizing their role in supporting business operations, decision-making, and competitive advantage. Students will examine core components including hardware, software, data, procedures, and people, as well as various types of information systems such as transaction processing, management information, and decision support systems. Key topics include systems development life cycles, database management, networking, security, and ethical issues associated with IS. By the end of the course, students will understand how information systems can be leveraged to solve organizational challenges and facilitate strategic initiatives.
Recommended Textbook
Data Communications and Computer Networks A Business Users Approach 8th Edition by Curt
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13 Chapters
1235 Verified Questions
1235 Flashcards
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Chapter 1: Introduction to Computer Networks and Data
Communications
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76 Verified Questions
76 Flashcards
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Sample Questions
Q1) The top layer in the OSI model is the ____________________ layer,where the application using the network resides.
Answer: application
Q2) What is data communications?
Answer: We will define data communications as the transfer of digital or analog data using digital or analog signals.Once created,these analog and digital signals then are transmitted over conducted media or wireless media.Both the data and the signal can be analog or digital,allowing for four possible combinations.Transmitting analog data by analog signals and digital data by digital signals are fairly straightforward processes-the conversion from one form to another is relatively simple.Transmitting digital data using analog signals,however,requires the digital data to be modulated onto an analog signal,which is what happens with a modem and the telephone system.Transmitting analog data using digital signals requires the data to be sampled at specific intervals and then digitized into a digital signal,which is what happens with a device called a digitizer,or codec.
Q3) The two most common architectures known today are the Open Systems Interconnection (OSI)model and the ____________________ protocol suite.
Answer: TCP/IP
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Chapter 2: Fundamentals of Data and Signals
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100 Verified Questions
100 Flashcards
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Sample Questions
Q1) Like signals,data can be analog or digital.
A)True
B)False
Answer: True
Q2) By convention,the minimum and maximum values of analog data and signals are presented as voltages.
A)True
B)False
Answer: True
Q3) ____ are represented as continuous waveforms that can be at an infinite number of points between some given minimum and maximum.
A) Analog signals
B) Digital signals
C) Digital data
D) Digital pulses
Answer: A
Q4) ____________________ are the electric or electromagnetic impulses used to encode and transmit data.
Answer: Signals
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Chapter 3: Conducted and Wireless Media
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103 Verified Questions
103 Flashcards
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Sample Questions
Q1) Cells,in a cellular telephone system,can range in size from one-half mile in radius to ____ miles in radius.
A) 25
B) 35
C) 50
D) 70
Answer: C
Q2) The two most common application areas of terrestrial microwave are ____________________ and business intercommunication.
Answer: telephone communications
Q3) The braided metal shield is very good at blocking electromagnetic signals from entering the cable and producing noise.
A)True
B)False
Answer: True
Q4) ____________________ transmission is a special form of radio transmission that uses a focused ray of light in the infrared frequency range (1012 -1014 MHz).
Answer: Infrared
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Page 5
Chapter 4: Making Connections
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76 Verified Questions
76 Flashcards
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Sample Questions
Q1) In modem interfacing terminology,the computer (or terminal)end of an interface is referred to as ____.
A) data communicating equipment (DCE)
B) data terminating equipment (DTE)
C) data transmitting equipment (DTE)
D) data receiving equipment (DRE)
Q2) If control simplicity is your primary goal,point-to-point connection of terminals is clearly superior to multipoint connections.
A)True
B)False
Q3) To define functional and procedural components,EIA-232F incorporates the ITU's ____ standard.
A) ISO 2110
B) V.28
C) RS-232
D) V.24
Q4) Neither USB nor FireWire support isochronous connections.
A)True
B)False
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Chapter 5: Making Connections Efficient: Multiplexing and Compression
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96 Verified Questions
96 Flashcards
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Sample Questions
Q1) ____________________ is a relatively new technology that has been used extensively by both the military and cellular telephone companies.
Q2) What are the major disadvantages of frequency division multiplexing?
Q3) Chip spreading codes are ____ bits in length.
A) 32
B) 64
C) 128
D) 256
Q4) SDH was developed in Europe by ITU-T.
A)True
B)False
Q5) In frequency division multiplexing,the combined signals are digital.
A)True
B)False
Q6) The basic way to perform compression is to look for some common pattern in the data and replace each data pattern with a symbol or symbols that will consume less space during transmission or storage.
A)True
B)False
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Chapter 6: Errors, Error Detection, and Error Control
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75 Verified Questions
75 Flashcards
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Sample Questions
Q1) If jitter becomes too great,correcting it can require the transmitting devices to speed up their transmission rates.
A)True
B)False
Q2) Typically,impulse noise is a(n)____ burst of energy.
A) digital
B) analog
C) binary
D) logical
Q3) List and briefly explain some error-prevention techniques.
Q4) White noise is also called thermal noise or ____ noise.
A) crosstalk
B) jitter
C) Gaussian
D) spike
Q5) NAK represents a positive acknowledgment.
A)True
B)False
Q6) A(n)____________________ is essentially a filter that allows the signal to pass in one direction only.
Page 8
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Chapter 7: Local Area Networks: Part I
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99 Verified Questions
99 Flashcards
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Sample Questions
Q1) Explain the switch filtering function.
Q2) ____________________ was designed to support 100-Mbps baseband signals using two pairs of Category 5 unshielded twisted pair.
Q3) The logical link control sublayer defines the layout or format of the data frame,simply called the frame.
A)True
B)False
Q4) The ____________________ makes it possible to logically remove cyclic paths within a collection of multiple LANs.
Q5) A ____ is a device that interconnects two or more workstations in a star-wired bus local area network and immediately retransmits the data it receives from any workstation out to all other workstations connected.
A) hub
B) switch
C) router
D) repeater
Q6) In ____________________ segment networks,a switch may be connected to a hub (or several hubs),which then connects multiple workstations.
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Chapter 8: Local Area Networks: Part II
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113 Verified Questions
113 Flashcards
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Sample Questions
Q1) A ____ is a server that has no cabinet or box,but resides on a single printed circuit card.
A) peer-to-peer server
B) server appliance
C) server blade
D) print server
Q2) When a software package is installed on a multiuser system,it is not possible for multiple users to execute multiple copies of the single program.
A)True
B)False
Q3) In the wireless LAN ad hoc layout configuration,each user device communicates directly with the other user devices.
A)True
B)False
Q4) ____________________ software is designed to scan an IP address or range of IP addresses for any type of security weakness.
Q5) A(n)____________________ license,operating system user license,and controlled number of concurrent users license all refer to essentially the same situation.
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Chapter 9: Introduction to Metropolitan Area Networks and
Wide Area Networks
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101 Verified Questions
101 Flashcards
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Sample Questions
Q1) The major disadvantage of flooding is the large number of copied packets distributed throughout the network.
A)True
B)False
Q2) One disadvantage of distributed routing is related to the problems that arise if the routing tables need to be updated.
A)True
B)False
Q3) A wide area network connects its workstations through the use of a ____ design and requires routing to transfer data across the network.
A) bus
B) star
C) mesh
D) ring
Q4) Most wide area networks use some form of Dijkstra's algorithm to determine a least-cost route through a network.
A)True
B)False
Page 11
Q5) The ability to reroute in the event of a failure is called ____________________.
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Chapter 10: The Internet
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Sample Questions
Q1) The ____________________ can perform the digitization,compression,and encapsulation required,and it controls the setup of VoIP calls between the calling device and the called device.
Q2) IP is a connection-oriented protocol.
A)True
B)False
Q3) ___________________________________ was introduced in 1998 by the Internet Engineering Task Force specifically for supporting the transfer of voice over the Internet.
Q4) A(n)____ uniquely identifies files,Web pages,images,or any other types of electronic documents that reside on the Internet.
A) File Transfer Protocol (FTP)
B) Internet Protocol (IP)
C) Uniform Resource Locator (URL)
D) Domain Name Service (DNS)
Q5) The Internet recognizes URLs directly.
A)True
B)False
Q6) How does the Internet Protocol work?
Q7) How does NAT work?
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Chapter 11: Voice and Data Delivery Networks
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97 Verified Questions
97 Flashcards
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Sample Questions
Q1) The ____ standard is a 56,000-bps dial-up modem standard approved by a standards-making organization rather than a single company.
A) R.56
B) V.90
C) 802.11Q
D) 803.1
Q2) As long as a telephone call remains within a LATA (a(n)____ call),the telephone call is local and is handled by a local telephone company.
A) intraLATA
B) extraLATA
C) outerLATA
D) outLATA
Q3) A(n)______________________________ is a large,computerized,self-contained telephone system that sits in a telephone room on a company's premises.
Q4) After the 1984's Modified Final Judgment,the local telephone companies became known as ______________________________.
Q5) What are the advantages and disadvantages of ATM?
Q6) What are the advantages of frame relay?
Page 13
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Chapter 12: Network Security
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100 Flashcards
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Sample Questions
Q1) The ____ is a commonly employed encryption method used by businesses to send and receive secure transactions.
A) firewall
B) Trojan horse
C) Data Encryption Standard (DES)
D) TCP
Q2) Internet systems are the only systems that experience security problems.
A)True
B)False
Q3) If you exclusive-OR a 0 and a 0,as is done with certain spread spectrum techniques,the result is 1.
A)True
B)False
Q4) ____ involves electronically monitoring data flow and system requests into and out of their systems.
A) Worms
B) Intrusion detection
C) Firewalls
D) Routers
Q5) What are some of the standard rules for creating or changing a password?
Page 14
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Chapter 13: Network Design and Management
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Sample Questions
Q1) A(n)____________________ involves modeling an existing system or a proposed system using a computer-based simulation tool and subjecting the model to varying degrees of user demand (called load).
Q2) The ________________________________________ is a structured approach to the development of a business system.
Q3) In a payback analysis,the ____________________ values are the benefits,or income amounts,that are expected each year.
Q4) A(n)____________________ monitors a network 24 hours a day,seven days a week,and captures and records all transmitted packets.
Q5) Computer networks are mission-critical systems,and designing a new computer network or increasing the capacity of a current system requires careful planning.
A)True
B)False
Q6) The term "feasible" has several meanings when it's applied to computer-based projects.
A)True
B)False
Q7) Mention some of the major goals every company has.
Page 15
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