IT Infrastructure
Exam Solutions
Course Introduction
IT Infrastructure explores the foundational components and technologies that support and enable modern information systems within organizations. This course covers the principles and practices of designing, managing, and maintaining hardware, software, networks, data centers, and cloud services. Students learn about servers, storage systems, networking protocols, virtualization, and security measures, as well as emerging trends such as edge computing and hybrid cloud architectures. Emphasis is placed on understanding scalability, reliability, and efficiency to ensure robust and secure IT operations, preparing students for roles in system administration, network management, and IT support.
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
Source URL: https://quizplus.com/study-set/2373 Page 2
Chapter 1: Introduction to Computer Networks and Data Communications
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76 Verified Questions
76 Flashcards
Source URL: https://quizplus.com/quiz/47097
Sample Questions
Q1) The _________________________ is the software that prepares a packet of data so that it can move from one network to another on the Internet or within a set of corporate networks.
Answer: Internet Protocol
Internet Protocol (IP)
IP
Q2) ___________________________________ is used to allow Web browsers and servers to send and receive World Wide Web pages.
Answer: Hypertext Transfer Protocol (HTTP)
Hypertext Transfer Protocol
HTTP
Q3) One of the most explosive areas of growth in recent years has been cellular phone networks.
A)True
B)False
Answer: True
Q4) A(n)____________________ converts the local area network data into wide area network data.
Answer: router
Page 3
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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) Telephones,AM radio,FM radio,broadcast television,and cable television are the most common examples of analog data-to-digital signal conversion.
A)True
B)False
Answer: False
Q2) ____ are discrete waveforms,rather than continuous waveforms.
A) Analog signals
B) Analog bauds
C) Digital signals
D) Analog data
Answer: C
Q3) Attenuation in a medium such as copper wire is a logarithmic loss and is a function of distance and the resistance within the wire.
A)True
B)False
Answer: True
Q4) The control character ____________________ (CR)provides control between a processor and an input/output device.
Answer: carriage return
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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) The third PCS technology was ____ and used a different form of time division multiple access technology.
A) Global System for Mobile (GSM) Communications
B) Time Division Multiple Access (TDMA)
C) Code Division Multiple Access (CDMA)
D) Digital-Advanced Mobile Phone Service (D-AMPS)
Answer: A
Q2) Satellites that are always over the same point on Earth can be used for long periods of high-speed data transfers.
A)True
B)False
Answer: True
Q3) In a(n)____ none of the wires is wrapped with a metal foil or braid.
A) shielded twisted pair (STP)
B) unshielded twisted pair (UTP)
C) CAT 4 twisted pair
D) CAT 7 twisted pair
Answer: B
Q4) Multimode fiber-optic cable is labeled ____________________ cable.
Answer: 62.5/125
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Chapter 4: Making Connections
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76 Verified Questions
76 Flashcards
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Sample Questions
Q1) ____ is a serial connection or bus that can carry multiple channels of data at the same time.
A) InfiniBand
B) Fibre Channel
C) SCSI
D) USB
Q2) SCSI is a ____ interface and not just an interface technique for hard disk drives.
A) systems
B) terminal
C) server
D) driver
Q3) FireWire supports two types of data connections: an asynchronous connection and a(n)____ connection.
A) synchronous
B) timed
C) parallel
D) isochronous
Q4) What are the three ways used to maintain synchronization in synchronous connections?
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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) ____ multiplexes multiple data streams onto a single fiber-optic line.
A) Statistical time division multiplexing (Stat TDM)
B) Wavelength division multiplexing (WDM)
C) Time division multiplexing (TDM)
D) Channel division multiplexing (CDM)
Q2) The T-1 system is a classic application of frequency division multiplexing.
A)True
B)False
Q3) A T-1 system multiplexes _______ into each frame.
A) a single ASCII character
B) a single LENGTH byte
C) a single SYNC bit
D) a single SYNC byte
Q4) A(n)____________________ is an assigned set of frequencies that is used to transmit the user's signal.
Q5) The inability of a single fiber-optic line to meet users' needs is called
Q7) How does Wavelength division multiplexing work? Page 7
Q6) In WDM,the wavelength of each differently colored laser is called the
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Page 8
Chapter 6: Errors, Error Detection, and Error Control
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75 Verified Questions
75 Flashcards
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Sample Questions
Q1) Error bursts occur ____ percent of the time.
A) 2 to 5
B) 5 to 10
C) 8 to 10
D) 10 to 20
Q2) High humidity and wet weather can cause an increase in electrical ____ over a telephone system.
A) compression
B) attenuation
C) jitter
D) crosstalk
Q3) How does simple parity work?
Q4) In a stop-and-wait error control system,a receiver may acknowledge multiple packets with a single ACK.
A)True
B)False
Q5) A(n)_________________________ is an industry-approved bit string that is used to create the cyclic checksum remainder.
Q6) How does longitudinal parity work?
Q7) How does the cyclic redundancy checksum work?
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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) In IEEE 802.3 standard for CSMA/CD,frames shorter than 64 bytes are considered ____________________,or frame fragments.
Q2) IEEE created the 100-Mbps Ethernet 802.3u protocol also called ____ Ethernet.
A) Fast
B) Gigabit
C) Terabit
D) FDDI
Q3) ____________________ was designed to support 100-Mbps baseband signals using two pairs of Category 5 unshielded twisted pair.
Q4) Three of the most popular local area network systems are Ethernet,IBM Token Ring,and Wireless Ethernet.
A)True
B)False
Q5) The ____ standard was one of the first Ethernet standards approved.
A) 10Broad36
B) 10Base5
C) 100BaseTX
D) 100BaseT4
Q6) The ____________________ Ethernet standard is also known as IEEE 802.3ae.
Page 10
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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) How does the NetWare Directory Services (NDS)work?
Q2) The most recent version of the Windows network operating system is Windows
A) XP
B) 2000
C) 2003
D) 2008
Q3) A(n)____________________ may not have any servers but allows communications between workstations,as if the workstations were all equals.
Q4) An interesting feature shared by all versions of NetWare is that the ____ is virtually invisible to the user.
A) login process
B) logout process
C) user interface
D) loading process
Q5) Network servers only include mainframe computers.
A)True
B)False
Q6) A(n)______________________________ is a large,complex program that can manage the common resources on most local area networks.
Page 11
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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) You can assign many meanings to the weights in a weighted network graph.
A)True
B)False
Q2) In a(n)____________________ network,all data messages are transmitted using fixed-sized packages,called packets,and no unique,dedicated physical path is established to transmit the data packets across the subnetwork.
Q3) The path in a circuit-switched network exists only in the software.
A)True
B)False
Q4) ____________________ routing is a technique that uses a routing algorithm to generate routing information and dictates that this information be stored at distributed locations within the network.
Q5) To distinguish between a piece of data processed at the data link layer and a piece of data processed at the network layer,the term "____" is used at the data link layer,and the term "packet" is used at the network layer.
A) load
B) product
C) frame
D) payload
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Chapter 10: The Internet
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100 Verified Questions
100 Flashcards
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Sample Questions
Q1) The Internet recognizes URLs directly.
A)True
B)False
Q2) A company can use IP for transmission of data within its own network,but use traditional telephone lines outside the company network.Many people are now beginning to call such systems ____.
A) private VoIP
B) public VoIP
C) remote VoIP
D) distributed VoIP
Q3) The IP datagram fields Identification,Flags,and Fragment Offset are used to fragment a datagram into smaller parts.
A)True
B)False
Q4) The most popular protocol that handles dynamic assignment of IP addresses is
Q5) A(n)____________________ is a TCP/IP network inside a company that allows employees to access the company's information resources through an Internet-like interface.
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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) A trunk has a unique telephone number associated with it.
A)True
B)False
Q2) ATM transfer rates are as fast as 311 Mbps.
A)True
B)False
Q3) Before ATM can transfer any data,you must first create a logical connection called a
A) virtual path connection (VPC)
B) virtual channel connection (VCC)
C) network-network interface
D) network-user interface
Q4) What are the advantages of frame relay?
Q5) Subscriber loops usually transmit digital signals,which require amplifiers every few kilometers.
A)True
B)False
Q6) Cable modem connections are typically symmetric.
A)True
B)False
Page 14
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Chapter 12: Network Security
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100 Flashcards
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Sample Questions
Q1) One very common technique to attack a system is to deliver an e-mail or Web page that contains a malicious piece of code called a ____.
A) NOS
B) firewall
C) proxy
D) mobile malicious code
Q2) ____________________ is the art and science of hiding information inside other,seemingly ordinary messages or documents.
Q3) One of the inherent problems with protecting a single key is that it means that only one key is used to both encode and decode the message.
A)True
B)False
Q4) A ____ is a common Internet tool used to verify if a particular IP address of a host exists and to see if the particular host is currently available.
A) ping
B) firewall
C) router
D) DNS
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Chapter 13: Network Design and Management
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99 Flashcards
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Sample Questions
Q1) A very popular sniffer that can be used on Unix and Windows networks is Ethereal/Wireshark.
A)True
B)False
Q2) A managed element has management software,called a(n)____________________,running in it.
Q3) The ____________________ feasibility of a system is the extent to which the system can be created and implemented using currently existing technology.
Q4) ____________________ involves trying to determine the amount of network bandwidth necessary to support an application or a set of applications.
Q5) A number of techniques exist for performing ____ planning,including linear projection,computer simulation,benchmarking,and analytical modeling.
A) financial
B) time
C) capacity
D) money
Q6) Provide an example of capacity planning using linear projection.
Q7) What are the SDLC phases?
Page 16
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