Computer Science Fundamentals
Question Bank
Course Introduction
Computer Science Fundamentals introduces foundational concepts essential for understanding the field of computing. The course covers core topics such as algorithms, data structures, programming languages, and computational thinking. Students will develop problem-solving skills through hands-on programming exercises, explore how computers process information, and learn about the history and impact of computer science in modern society. Emphasis is placed on logical reasoning, efficiency, and design as they relate to software development and real-world applications. This course provides a strong base for further study in advanced computer science topics.
Recommended Textbook
Data and Computer Communications 10th Edition by William Stallings
Available Study Resources on Quizplus
24 Chapters
1079 Verified Questions
1079 Flashcards
Source URL: https://quizplus.com/study-set/3953
Page 2
Chapter 1: Data Communications, data Networks,
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78892
Sample Questions
Q1) The need to make efficient use of transmission facilities that are typically shared among a number of communicating devices is referred to as ________.
Answer: transmission system utilization
Q2) The increasing use of optical fiber,while greatly increasing capacity,has caused an increase in transmission prices as well.
A)True
B)False
Answer: False
Q3) Using fixed length packets and sometimes referred to as cell relay,________ is a culmination of developments in circuit switching and packet switching.It is so efficient that it can offer a constant data rate channel even though it is using a packet switching technique.
Answer: asynchronous transfer mode (ATM)
Q4) Today's networks can offer differing levels of ________,which include specifications for maximum delay and minimum throughput. Answer: quality of service (QoS)
Q5) Communicating across arbitrary,multiple,packet-switched networks is ________.
Answer: internetworking
To view all questions and flashcards with answers, click on the resource link above. Page 3
Chapter 2: Protocol Architecture, tcpip, and
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78891
Sample Questions
Q1) Procedures needed to allow data to traverse multiple interconnected networks is found in the internet layer of the TCP/IP protocol architecture.
A)True
B)False
Answer: True
Q2) In the TCP/IP architecture constituent networks are referred to as ________.
Answer: subnetworks
Q3) Traffic on a network or internet can be divided into two broad categories: elastic and inelastic.
A)True
B)False
Answer: True
Q4) The two commonly used transport level protocols used as part of the TCP/IP protocol suite are TCP and ________.
Answer: User Datagram Protocol (UDP)
Q5) ________ provides a secure remote logon capability which enables a user at a terminal or personal computer to logon to a remote computer function as if directly connected to that computer.
Answer: Secure Shell (SSH)
To view all questions and flashcards with answers, click on the resource link above. Page 4
Chapter 3: Data Transmission
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78890
Sample Questions
Q1) A guided transmission medium is ________ if it provides a direct link between two devices and those are the only two devices sharing the medium.
A)multipoint
B)simplex
C)point-to-point
D)wireless
Answer: C
Q2) Guided media,also called wireless,provide a physical means for guiding electromagnetic waves through seawater.
A)True
B)False
Answer: False
Q3) The ________ of a signal is the distance occupied by a single cycle.
A)bandwidth
B)frequency
C)wavelength
D)amplitude
Answer: C
To view all questions and flashcards with answers, click on the resource link above.
5
Chapter 4: Transmission Media
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78889
Sample Questions
Q1) Coaxial cable is used to transmit both analog and digital signals.
A)True
B)False
Q2) The least expensive and most widely used guided transmission medium for both analog and digital signals is ________.
Q3) Typically used for long distance applications,________ propagation provides superior performance because there is a single transmission path.
A)single-mode
B)direct-line mode
C)step-index multimode
D)graded-index multimode
Q4) Guided media employ an antenna for transmitting through air, vacuum,or water.
A)True
B)False
Q5) For ________ media the bandwidth of the signal produced by the transmitting antenna is more important than the medium in determining transmission characteristics.
Q6) Twisted pair,coaxial cable and optical fiber are examples of ________ media,which provide a physical path along which signals are propagated.
To view all questions and flashcards with answers, click on the resource link above. Page 6
Chapter 5: Signal Encoding Techniques
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78888
Sample Questions
Q1) A category of encoding techniques known as multilevel binary addresses some of the deficiencies of the NRZ codes.
A)True B)False
Q2) The modulation rate of a signal is the rate,in bits per second,that data are transmitted.
A)True
B)False
Q3) The basis for ________ signaling is a continuous constant frequency signal known as the carrier signal.
Q4) All modulation techniques involve operation on one or more of the three fundamental frequency domain parameters: amplitude,phase and _____.
Q5) Multiple signals,each at a different position on the spectrum,sharing the same transmission medium,is known as frequency division ________.
Q6) In ________ signaling one logic state is represented by a positive voltage level and the other by a negative voltage level.
Q7) NRZI is an example of ________ encoding.
Q8) The process of converting analog data into digital data is known as ________.
Page 7
To view all questions and flashcards with answers, click on the resource link above.
Chapter 6: Error Detection and Correction
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78887
Sample Questions
Q1) Regardless of the design of the transmission system,there will be errors,resulting in the change of one or more bits in a transmitted block of data.
A)True B)False
Q2) Modulo 2 arithmetic uses binary addition with no carries,which is just the exclusive-OR (XOR)operation.
A)True B)False
Q3) An ___________ is a group of bits in which two successive erroneous bits are always separated by less than a given number x of correct bits.
Q4) The ________ is a measure of how much additional bandwidth is required to carry data at the same data rate as without the code.
Q5) Three approaches are in common use for coping with data transmission errors: error-detection codes,error-correction codes,and __________ protocols.
Q6) An error detection code simply detects the presence of an error. . A)True B)False
To view all questions and flashcards with answers, click on the resource link above.
Page 8
Chapter 7: Data Link Control Protocols
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78886
Sample Questions
Q1) An error detecting code calculated from the remaining bits of the frame, exclusive of flags,is the ________.
Q2) The most important data link control protocol is ________.
Q3) A layer of logic is added above the physical layer to achieve necessary control.This logic is referred to as a ________ protocol.
Q4) The initiation,maintenance,and termination of a sustained data exchange require management procedures for the exchange.
A)True
B)False
Q5) RR and RNR are examples of an ________.
A)error repair request
B)acknowledgment frame
C)open acknowledgment frame
D)interior window
Q6) Data are sent in blocks called ________.
A)links
B)units
C)entities
D)frames
Page 9
To view all questions and flashcards with answers, click on the resource link above.
Chapter 8: Multiplexing
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78885
Sample Questions
Q1) The ________ accepts the multiplexed data stream,separates the data according to channel,and delivers data to the appropriate output lines.
A)high capacity fiber
B)coaxial link
C)multiplexer
D)demultiplexer
Q2) In ________ modulation,each signal occupies a distinct frequency band so these signals can be combined by simple addition to produce the composite signal for transmission.
Q3) ADSL uses ________ multiplexing to exploit the capacity of twisted pair.
A)synchronous time division
B)statistical time division
C)time division
D)frequency division
Q4) Synchronous time division multiplexing can be used with ________ signals.
A)analog
B)digital signals or analog signals carrying digital data
C)digital
D)digital signals carrying digital data
Q5) A generic term for sharing the capacity of a data link is ________.
To view all questions and flashcards with answers, click on the resource link above. Page 10
Chapter 9: Wan Technology and Protocols
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78884
Sample Questions
Q1) Circuit switching remains one of the few effective technologies for long distance communications.
A)True
B)False
Q2) Priorities cannot be used with packet switching.
A)True
B)False
Q3) The ________ element represents the functions and hardware needed to connect digital devices such as data processing devices and digital telephones to the network.
A)media gateway
B)digital switch
C)control unit
D)network interface
Q4) With circuit switching,switching and transmission resources within the network are reserved for the exclusive use of the circuit for the duration of the connection.
A)True
B)False
Q5) ________ switching is used in public telephone networks.
To view all questions and flashcards with answers, click on the resource link above. Page 11
Chapter 10: Cellular Wireless Networks
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78883
Sample Questions
Q1) Mobile radio communication introduces complexities not found in wire communication or in fixed wireless communication.
A)True
B)False
Q2) A ________ is used to identify the user and register its location.
A)page
B)handoff
C)handshake
D)reflection
Q3) Third generation wireless communication supports ________.
A)voice but not multimedia data
B)multimedia but not voice
C)multimedia and voice
D)voice but not video
Q4) One unwanted effect of multipath propagation is that multiple copies of a signal may arrive at different phases.
A)True
B)False
Q5) The key technology for 4G systems is ________.
Q6) First generation cellular networks made use of ________ multiplexing.
To view all questions and flashcards with answers, click on the resource link above. Page 12
Chapter 11: Local Area Network Overview
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78882
Sample Questions
Q1) Which of the following is NOT a characteristic of a bridge?
A)The bridge makes no modification to the content or format of the frames it receives.
B)The bridge must contain addressing and routing intelligence.
C)There may not be more than two LANs interconnected by a number of bridges.
D)The bridge should contain enough buffer space to meet peak demands.
Q2) The key elements of the local area network determine the cost and capacity of the LAN,the type of data that may be transmitted,the speed and efficiency of communications,and the kinds of applications that can be supported.
A)True
B)False
Q3) In the ________ topology the transmission medium is a branching cable with no closed loops.
A)bus
B)linear
C)ring
D)tree
Q4) There are four alternative media that can be used for a bus LAN: baseband coaxial cable,broadband coaxial cable,optical fiber,and ________.
To view all questions and flashcards with answers, click on the resource link above.
Page 13
Chapter 12: Ethernet
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78881
Sample Questions
Q1) Rapid Ethernet refers to a set of specifications developed by the IEEE 802.3 committee to provide a low-cost,Ethernet-compatible LAN operating at 100 Mbps and utilizing 10BASE-T.
A)True
B)False
Q2) For the lower data rates the ________ MAC protocol is used.
Q3) Client/server computing has become a dominant architecture in the business environment.
A)True
B)False
Q4) Two frames interfering with each other at the receiver so that neither gets through is known as ________.
A)a collision
B)a backlog
C)a backoff
D)scrambling
Q5) If the medium is idle,transmit,otherwise,if the medium is busy,continue to listen until the channel is sensed idle,then transmit immediately,are the rules of ________ carrier sense multiple access.
To view all questions and flashcards with answers, click on the resource link above. Page 14
Chapter 13: Wireless Lans
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78880
Sample Questions
Q1) ________ access provides a wireless link between a LAN hub and a mobile data terminal equipped with an antenna,such as a laptop computer or notepad computer.
Q2) IEEE ________ embodies changes in three general areas: use of MIMO, enhancements in radio transmission,and MAC enhancements.
Q3) A ________ is a system used to interconnect a set of basic service sets and integrated LANs to create an extended service set.
A)DS
B)MPDU
C)AP
D)MSDU
Q4) The three MAC frame types are control frames,data frames,and ________ frames.
Q5) The popularity of wireless LANs has not grown significantly because the problems of high prices,low data rates,occupational safety concerns,and licensing requirements have not been addressed.
A)True
B)False
Q6) Currently wireless LAN products fall into three categories: spread spectrum LANs,OFDM LANs and ________ LANs.
To view all questions and flashcards with answers, click on the resource link above. Page 15
Chapter 14: The Internet Protocol
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78879
Sample Questions
Q1) A function performed by a receiving entity to limit the amount or rate of data that is sent by a transmitting entity is ________.
A)flow control
B)error control
C)transmission control
D)data control
Q2) IP does not guarantee that all data will be delivered or that the data that are delivered will arrive in the proper order.
A)True
B)False
Q3) The driving motivation for the adoption of a new version of IP was the limitation imposed by the 32-bit address field in IPv4.
A)True
B)False
Q4) The counterpart of fragmentation is reassembly.
A)True
B)False
Q5) IPv6 addresses are ________ bits in length.
Q6) The most widely used protocol for internetworking is the ________.
Page 16
To view all questions and flashcards with answers, click on the resource link above.
Chapter 15: Transport Protocols
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78878
Sample Questions
Q1) If there is a single host-node link over which all virtual circuits are multiplexed,the throughput of a transport connection can exceed the data rate of that link.
A)True
B)False
Q2) When a TCP entity detects the presence of congestion in the Internet,it reduces the flow of data onto the Internet until it detects an easing in congestion.
A)True
B)False
Q3) A transport protocol can be either connection oriented,such as UDP,or connectionless,such as TCP.
A)True
B)False
Q4) To begin a connection establishment a TS user is in a ________ state.
A)CLOSED
B)LISTEN
C)OPEN
D)ESTAB
Q5) TCP uses only a single type of protocol data unit called a ________.
To view all questions and flashcards with answers, click on the resource link above. Page 17
Chapter 16: Advanced Data Communications Topics
Available Study Resources on Quizplus for this Chatper
44 Verified Questions
44 Flashcards
Source URL: https://quizplus.com/quiz/78877
Sample Questions
Q1) A _________ code takes an input of arbitrary length and produces a fixed-length CRC check code.
A)BCH
B)LFS
C)VSB
D)CRC
Q2) Stop-and-wait flow control is more efficient than sliding-window flow control.
A)True
B)False
Q3) For a parity-check code there are three functions to perform: encoding,error detection,and __________ .
Q4) __________ proposed an approach for the construction of LDPC codes by defining the LDPC parity-check matrix.
A)MacKay
B)Reed
C)Gallager
D)Neal
Q5) The m * n matrix H = [hij] is called the _______ .
Q6) Reed-Solomon is an example of a ________ code.
Q7) _________ modulation is the simplest form of modulation.
To view all questions and flashcards with answers, click on the resource link above. Page 18
Chapter 17: Wireless Transmission Techniques
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78876
Sample Questions
Q1) MU-MIMO techniques are used in both Wi-Fi and 4G cellular networks.
A)True
B)False
Q2) With ________ it is possible to simultaneously transmit either from or to different users by allocating the subcarriers during any one-time interval to multiple users.
A)OFDMA
B)SC-FDMA
C)SC-TDMA
D)all of the above
Q3) A disadvantage of MU-MIMO is that the available capacity cannot be shared to meet time-varying demands.
A)True
B)False
Q4) Spatial diversity can be used when transmitting conditions are favorable and for relatively short distances compared to spatial multiplexing.
A)True
B)False
Q5) The ________ reverses the FFT operation.
To view all questions and flashcards with answers, click on the resource link above. Page 19
Chapter 19: Routing
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78875
Sample Questions
Q1) The routing decision is more complex,therefore,the processing burden on network nodes increases with ________ routing.
Q2) "Because all routes are tried,at least one copy of the packet to arrive at the destination will have used a minimum-hop route" is a property of
A)fixed routing
B)flooding
C)adaptive routing
D)random routing
Q3) The primary function of a ________ network is to accept packets from a source station and deliver them to a destination station.
Q4) The ________ function attempts to find the least cost route through the network.
A)ABR
B)management
C)generic flow control
D)routing
Q5) In a ________ network,each node will remember the routing decision that was made when the virtual circuit was established,and simply pass on the packets without making a new decision.
To view all questions and flashcards with answers, click on the resource link above. Page 20
Chapter 20: Congestion Control
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78874
Sample Questions
Q1) In a rate based scheme any node along the path of the connection can reduce the data rate limit in a control message to the source.
A)True
B)False
Q2) A common technique for predicting the next value on the basis of a time series of past values,and the one specified in RFC 793,is _________.
A)Jacobson's algorithm
B)token bucket
C)exponential averaging
D)implicit congestion signaling
Q3) When a TCP entity retransmits a segment using fast retransmit it assumes that a segment was lost,even though it has not yet timed out on that segment.
A)True
B)False
Q4) ________ algorithm addresses RTT variance estimation.
Q5) The TCP congestion control measure techniques fall into two categories: retransmission timer management and ________ management.
Q6) The ________ scheme provides the input parameters to a policing function.
To view all questions and flashcards with answers, click on the resource link above. Page 21
Chapter 21: Internetwork Operation
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78873
Sample Questions
Q1) The __________ is an index that identifies a security context between a pair of nodes which is configured so that the two nodes share a secret key and parameters relevant to this association.
Q2) The act of sending a packet from a source to the members of a multicast group is referred to as __________ .
Q3) The OpenFlow protocol supports ____________ messages.
A)controller-to-switch
B)asynchronous
C)symmetric
D)all of the above
Q4) In IGMP _____ hosts could join a multicast group and routers used a timer to unsubscribe group members.
A)v1
B)v2
C)v3
D)v4
Q5) The OpenFlow specification defines three types of tables: flow table,group table,and _______ table.
Q6) A mobile node is assigned to a particular network,known as its ______ .
To view all questions and flashcards with answers, click on the resource link above. Page 22
Chapter 22: Internetwork Quality of Service
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78872
Sample Questions
Q1) A drawback to the ________ queuing discipline is that no special treatment is given to packets from flows that are of a higher priority or are more delay sensitive.
Q2) The ________ is the most demanding service provided by ISA.
Q3) ________ traffic is the type of traffic for which internets were designed.
Q4) Interactive applications such as remote logon and Web access are not sensitive to delay.
A)True
B)False
Q5) When a router's buffer overflows it discards packets.
A)True
B)False
Q6) The routers in an internet are responsible for receiving and forwarding packets through the interconnected set of networks.
A)True
B)False
Q7) A ________ is a contract between a network provider and a customer that defines specific aspects of the service that is to be provided.
Q8) Real-time traffic is an example of ________ traffic.
To view all questions and flashcards with answers, click on the resource link above. Page 23
Chapter 23: Multiprotocol Label Switching
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78871
Sample Questions
Q1) Route selection refers to the selection of an LSP for a particular FEC.
A)True
B)False
Q2) ________ messages are used to create,change,and delete label mappings for FECs.
A)Session establishment and maintenance
B)Discovery
C)Advertisement
D)Notification
Q3) The ability to define routes dynamically,plan resource commitments on the basis of known demand,and optimize network utilization is referred to as ________.
Q4) For each forwarding equivalence class a specific path through the network of LSRs is defined.This is called a ________ path.
Q5) The essence of MPLS functionality is that traffic is grouped into ________.
A)FECs
B)ECN
C)LIBs
D)LSPs
Q6) A MPLS label is a 32-bit field consisting of the following elements: label value,S,TTL,and ________.
Page 24
To view all questions and flashcards with answers, click on the resource link above.
Chapter 24: Electronic Mail, dns, and Http
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78870
Sample Questions
Q1) The _______ domain is dedicated exclusively for private businesses.
A)org
B)net
C)com
D)biz
Q2) ________ supplements SMTP and allows the encapsulation of multimedia (nontext)messages inside of a standard SMTP message.
A)ADMD
B)MIME
C)DNS
D)IMAP
Q3) The ________ works on behalf of user actors and user applications and is their representative within the e-mail service.
Q4) The ________ relays mail for one application-level hop.
A)MTA
B)MS
C)POP
D)MSA
Q5) The Internet mail architecture is currently defined in RFC _______ .
To view all questions and flashcards with answers, click on the resource link above. Page 25
Chapter 25: Internet Multimedia Support
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/78869
Sample Questions
Q1) The __________,defined in RFC 3261,is an application level control protocol for setting up,modifying,and terminating real-time sessions between participants over an IP data network.
Q2) The term ___________ refers to the use of multiple forms of information,including text,still images,audio,and video.
Q3) Real-time applications are more concerned with timing issues.
A)True
B)False
Q4) The _______ is designed to support digital and analog phones and connect to IP-based networks using VoIP,as well as provide if needed a connection to the public switched telephone network using traditional technology.
Q5) A resource within a SIP network is identified by a __________ .
A)UAS
B)URI
C)UAC
D)URL
Q6) RTCP receivers provide reception quality feedback using a Sender Report or a ________ Report.
Q7) The term _______ refers to software operating on a PC that implements VoIP.
Page 26
To view all questions and flashcards with answers, click on the resource link above.