MIS 564 Pared Down
- 1.
***Modern (1990s and beyond) data communication networks are characterized by:
- A.
Decks of punch cards
- B.
Online terminals for batch processing
- C.
Isolated (stand-alone) personal computers
- D.
Batch I/O devices
- E.
Distributed systems that rely heavily on networking
Correct Answer
E. Distributed systems that rely heavily on networkingExplanation
Modern data communication networks are characterized by distributed systems that rely heavily on networking. This means that data is not stored in a central location but is distributed across multiple systems connected through a network. These systems communicate with each other to share and exchange data, allowing for efficient and seamless data transfer. This approach allows for increased scalability, reliability, and flexibility in data communication networks.Rate this question:
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- 2.
***In 1983, the Internet was split into two parts, one dedicated solely to the military and one dedicated to university research centers. The two parts were called:
- A.
Intranet and Extranet
- B.
BITNET and NSFNET
- C.
Milnet and Internet
- D.
ARPANET and Milnet
- E.
None of the above
Correct Answer
C. Milnet and InternetExplanation
In 1983, the Internet was divided into two parts - Milnet and Internet. Milnet was dedicated solely to military use, while the Internet was dedicated to university research centers and other non-military purposes. This division allowed for separate networks and infrastructure to support the specific needs of the military and non-military users.Rate this question:
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- 3.
***A backbone network is:
- A.
A high speed central network that connects other networks in a distance spanning up to several miles.
- B.
A group of personal computers or terminals located in the same general area and connected by a common cable (communication circuit) so they can exchange information.
- C.
A network spanning a geographical area that usually encompasses a city or county area (3 to 30 miles).
- D.
A network spanning a large geographical area (up to 1000s of miles).
- E.
A network spanning exactly 200 miles with common carrier circuits.
Correct Answer
A. A high speed central network that connects other networks in a distance spanning up to several miles.Explanation
A backbone network is a high-speed central network that connects other networks over a distance spanning up to several miles. It serves as the main infrastructure for communication between different networks, allowing them to exchange data and information efficiently. The backbone network acts as a central hub, providing a reliable and fast connection for data transmission between various networks within its range.Rate this question:
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- 4.
***The ____________ layer of the OSI model is responsible for data format translation.
- A.
Session
- B.
Presentation
- C.
Physical
- D.
Application
- E.
Transport
Correct Answer
B. PresentationExplanation
The presentation layer of the OSI model is responsible for data format translation. This layer ensures that the data is properly formatted and compatible with the receiving system. It takes care of tasks such as data compression, encryption, and decryption. By translating the data into a standard format, the presentation layer allows different systems to communicate effectively, regardless of their specific data formats.Rate this question:
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- 5.
***In the Internet model, the application layer corresponds to the ________, layer(s) s of the OSI model.
- A.
Data link and network
- B.
Session, presentation and application
- C.
Application layer
- D.
Application and presentation
- E.
Network, transport and presentation
Correct Answer
B. Session, presentation and applicationExplanation
In the Internet model, the application layer corresponds to the session, presentation, and application layers of the OSI model. This means that the application layer in the Internet model performs similar functions as the session, presentation, and application layers in the OSI model. These layers are responsible for managing communication sessions, data formatting and encryption, and providing user interfaces and application services.Rate this question:
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- 6.
***Which is not a function of the physical layer:
- A.
Transmission of bits.
- B.
Defining the rules by which one and zeroes are transmitted.
- C.
Providing error-free transmission of data.
- D.
Providing the physical connection between sender and receiver.
- E.
Specifying the type of connection and type of signals, waves or pulses that pass though it.
Correct Answer
C. Providing error-free transmission of data.Explanation
The physical layer of a network is responsible for transmitting bits, defining the rules for transmitting ones and zeroes, providing the physical connection between sender and receiver, and specifying the type of connection and signals that pass through it. However, it is not responsible for providing error-free transmission of data. Error detection and correction is typically handled by higher layers of the network protocol stack, such as the data link layer or transport layer.Rate this question:
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- 7.
***Which of the following is a function of the transport layer?
- A.
Linking the physical layer to the network layer
- B.
Formatting messages by indicating where they start and end
- C.
Deciding which route the message should take
- D.
Breaking long messages into several smaller messages
- E.
Specifying the type of connection and the electrical signals, radio waves, or light pulses that pass through it
Correct Answer
D. Breaking long messages into several smaller messagesExplanation
The transport layer is responsible for breaking long messages into several smaller messages. This process is known as segmentation. By dividing large messages into smaller chunks, the transport layer ensures efficient and reliable transmission of data over the network. This segmentation allows for better utilization of network resources and facilitates error control and flow control mechanisms.Rate this question:
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- 8.
***Which of the following is a term used to group together the physical and data link layers?
- A.
Internetwork layers
- B.
Hardware layers
- C.
Software layers
- D.
Middleware layers
- E.
Application layers
Correct Answer
B. Hardware layersExplanation
The term "Hardware layers" refers to the grouping of the physical and data link layers in a network. These layers are responsible for the physical transmission of data, including the hardware components such as cables, connectors, and network devices. The physical layer deals with the actual transmission of bits over a physical medium, while the data link layer handles the framing and error detection of these bits. By grouping these layers together, it helps in organizing and understanding the different components and protocols involved in the lower levels of a network.Rate this question:
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- 9.
***The network layer of the Internet model uses the _____________ protocol to route messages though the network.
- A.
TCP
- B.
HTTP
- C.
FTP
- D.
SMTP
- E.
IP
Correct Answer
E. IPExplanation
The network layer of the Internet model uses the IP (Internet Protocol) to route messages through the network. IP is responsible for addressing and routing packets across different networks. It assigns a unique IP address to each device connected to the network, allowing them to communicate with each other. IP is a connectionless protocol, which means it does not establish a direct connection between sender and receiver but rather sends packets individually, choosing the best path for each packet to reach its destination.Rate this question:
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- 10.
***The three stages of the de juro standardization process are ______________________.
- A.
Specification, identification of choices and acceptance.
- B.
Planning, implementing and acceptance.
- C.
Brainstorming, identification and implementing.
- D.
Specification, formalization, and acceptance.
- E.
None of the above.
Correct Answer
A. Specification, identification of choices and acceptance.Explanation
The three stages of the de juro standardization process are specification, identification of choices, and acceptance. In the specification stage, the standards are defined and documented. This involves determining the specific requirements and criteria that the standard should meet. In the identification of choices stage, different options and alternatives are explored and evaluated. This allows for a thorough analysis of the available choices and helps in selecting the most suitable standard. Finally, in the acceptance stage, the chosen standard is officially adopted and implemented. This ensures that the standard is recognized and followed by the relevant stakeholders.Rate this question:
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- 11.
***______________, or the algorithms or business logic programmed into the application, can be simple or complex depending on the application.
- A.
Data storage
- B.
Data access logic
- C.
Application logic
- D.
Presentation logic
- E.
Application access storage
Correct Answer
C. Application logicExplanation
The given statement suggests that the algorithms or business logic programmed into the application can vary in complexity depending on the application. This implies that the application logic, which refers to the set of rules and processes that govern the behavior of the application, can be simple or complex. The complexity of the application logic is determined by the specific requirements and functionalities of the application.Rate this question:
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- 12.
***________ is the presentation of information to the user and the acceptance of the user’s commands.
- A.
Data storage
- B.
Data access logic
- C.
Application logic
- D.
Presentation logic
- E.
Application access storage
Correct Answer
D. Presentation logicExplanation
Presentation logic refers to the part of a computer program or system that is responsible for presenting information to the user and accepting the user's commands. It handles tasks such as displaying data, formatting the user interface, and capturing user input. This logic is typically separate from other components such as data storage, data access logic, and application logic, which handle different aspects of the system's functionality. Therefore, presentation logic is the correct answer as it accurately describes the role and function described in the question.Rate this question:
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- 13.
***Each server on a network that needs to act as a web server needs an application layer software package called a (n) ______________.
- A.
Browser
- B.
Application web
- C.
Web server
- D.
Operating system
- E.
None of the above
Correct Answer
C. Web serverExplanation
A web server is a software package that is required on each server on a network in order for it to act as a web server. The web server software allows the server to receive and respond to requests from clients, such as web browsers, and deliver web pages and other web content to them. Therefore, the correct answer is web server.Rate this question:
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- 14.
***Which of the following is not a user agent package?
- A.
Outlook Express
- B.
Microsoft Word
- C.
Fedora
- D.
Netscape Messenger
- E.
Microsoft Outlook
Correct Answer
B. Microsoft WordExplanation
Microsoft Word is not a user agent package because it is a word processing software used for creating and editing documents, while user agent packages are software applications or programs that act as a client on behalf of a user, typically used for accessing and interacting with internet resources such as web pages or email.Rate this question:
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- 15.
***The two basic types of media are:
- A.
Statistical and frequency
- B.
Guided and wireless
- C.
Local and wide area
- D.
Attenuator and Gaussian
- E.
Duplexed and non-duplexed
Correct Answer
B. Guided and wirelessExplanation
The correct answer is guided and wireless. Guided media refers to the physical media that are used to transmit signals, such as cables or wires, which provide a direct path for the signals. Wireless media, on the other hand, refers to the transmission of signals through the air using electromagnetic waves, without the need for physical cables. These two types of media represent the different ways in which data can be transmitted from one point to another.Rate this question:
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- 16.
***The type of media usually installed on homes and businesses by the telephone company is called ____________.
- A.
Fiber optic cable
- B.
Coaxial cable
- C.
Twisted pair
- D.
Phone cable
- E.
Phone wire
Correct Answer
C. Twisted pairExplanation
The type of media usually installed on homes and businesses by the telephone company is called twisted pair. Twisted pair refers to a type of cable that consists of two insulated copper wires twisted together. This type of cable is commonly used for telephone and data transmission because it provides good signal quality and is cost-effective.Rate this question:
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- 17.
***_____________ can be thought of as dividing the circuit horizontally.
- A.
Frequency division multiplexing
- B.
Statistical frequency division multiplexing
- C.
Statistical time division multiplexing
- D.
Time division multiplexing
- E.
Wavelength division multiplexing
Correct Answer
A. Frequency division multiplexingExplanation
Frequency division multiplexing (FDM) is a technique that divides the available bandwidth of a communication channel into multiple frequency bands. Each band is then assigned to a different signal or data stream, allowing multiple signals to be transmitted simultaneously. In this context, FDM can be thought of as dividing the circuit horizontally because it partitions the available frequency range into separate bands, each dedicated to a specific signal. This allows for efficient and simultaneous transmission of multiple signals over a single channel.Rate this question:
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- 18.
***Microwave transmission:
- A.
Is a type of high frequency radio communication
- B.
Requires a clear line-of-sight path
- C.
Is typically used for long distance data transmission
- D.
Does not require the laying of any cable
- E.
All of the above
Correct Answer
E. All of the aboveExplanation
Microwave transmission is a type of high frequency radio communication that requires a clear line-of-sight path. It is typically used for long distance data transmission and does not require the laying of any cable. Therefore, the correct answer is "all of the above" as all the statements mentioned are true for microwave transmission.Rate this question:
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- 19.
***_____________ is not a form of modulation used to transform digital data into analog signals.
- A.
Synchronous time division
- B.
Amplitude shift keying
- C.
Amplitude modulation
- D.
Frequency modulation
- E.
Phase modulation
Correct Answer
A. Synchronous time divisionExplanation
Synchronous time division is not a form of modulation used to transform digital data into analog signals. The other options, such as amplitude shift keying, amplitude modulation, frequency modulation, and phase modulation, are all forms of modulation commonly used for this purpose.Rate this question:
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- 20.
***If the highest frequency of a circuit is 10KHZ and the lowest frequency is 900 Hz, the bandwidth available for this circuit is :
- A.
890 Hz
- B.
8900 HZ
- C.
9100 Hz
- D.
9Khz
- E.
890 KHz
Correct Answer
C. 9100 HzExplanation
The bandwidth available for this circuit is 9100 Hz because it is calculated by subtracting the lowest frequency from the highest frequency. In this case, 10 kHz - 900 Hz = 9100 Hz.Rate this question:
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- 21.
***If each sample uses 16 bits and the number of samples taken each second is 8000; then the transmission speed on the circuit is?
- A.
128 Kbps
- B.
64 Kbps
- C.
12800 bps
- D.
96 Kbps
- E.
32000 bps
Correct Answer
A. 128 KbpsExplanation
The transmission speed on the circuit can be calculated by multiplying the number of bits per sample (16 bits) with the number of samples taken each second (8000 samples/sec). This gives us a total of 128,000 bits per second, which is equivalent to 128 Kbps.Rate this question:
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- 22.
***Time (non-statistical) division multiplexing differs from frequency division multiplexing because it:
- A.
Does not share a communication circuit
- B.
Splits the communication circuit vertically (with time slots) instead of horizontally
- C.
Increases the wavelength and phase angles of the baseband frequency used for transmission
- D.
Moves the baseband of a circuit by shifting it to a higher frequency
- E.
Reduces baseband signal velocity more than frequency division multiplexing
Correct Answer
B. Splits the communication circuit vertically (with time slots) instead of horizontallyExplanation
Time division multiplexing (TDM) differs from frequency division multiplexing (FDM) because it splits the communication circuit vertically (with time slots) instead of horizontally. In TDM, the available bandwidth is divided into discrete time slots, and each slot is assigned to a different signal. This allows multiple signals to be transmitted sequentially over the same communication circuit. In contrast, FDM divides the bandwidth into separate frequency channels, with each channel carrying a different signal simultaneously. Therefore, TDM and FDM differ in how they allocate the resources of the communication circuit to transmit multiple signals.Rate this question:
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- 23.
***As part of the five-layer network model used in this textbook, the data link layer sits directly between:
- A.
The physical and the application layers
- B.
The network and the application layers
- C.
The network and transport layers
- D.
The physical and the application layers
- E.
The physical and the network layers
Correct Answer
E. The physical and the network layersExplanation
The data link layer sits directly between the physical and the network layers. This layer is responsible for the reliable transfer of data between adjacent network nodes, ensuring error-free transmission over the physical layer. It handles tasks such as framing, error detection and correction, and flow control. The network layer, on the other hand, is responsible for routing and forwarding data packets between different networks. Therefore, the correct answer is that the data link layer sits directly between the physical and the network layers.Rate this question:
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- 24.
***Media access control:
- A.
Is not very important in point-to-point with full duplex configuration
- B.
Is not very important in local area networks
- C.
Is not very important in a point-to-point with a half duplex configuration
- D.
Is not very important in a multipoint configuration
- E.
Does not control when computers transmit
Correct Answer
C. Is not very important in a point-to-point with a half duplex configuration -
- 25.
***Which of the following is true about roll call polling?
- A.
It can not be modified to increase priority of clients or terminals.
- B.
It does not require a server or host or special device that performs the polling.
- C.
It is also called token passing.
- D.
It is a type of contention approach to media access control.
- E.
It typically involves some waiting because the server has to wait for a response from the polled client or terminal.
Correct Answer
E. It typically involves some waiting because the server has to wait for a response from the polled client or terminal.Explanation
Roll call polling is a method of media access control that involves the server polling clients or terminals one by one to determine their needs or status. This process typically requires some waiting because the server has to wait for a response from each polled client or terminal before moving on to the next one. This ensures that all clients or terminals are given equal opportunity to communicate and prevents any client or terminal from dominating the network.Rate this question:
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- 26.
***With contention:
- A.
Computers wait until the circuit is free before they send data
- B.
The server or front end processor works consecutively through a list of clients to determine who should have access to the media
- C.
The front end processor must wait for a response from the polled client or terminal
- D.
One computer starts the poll and passes it to the next computer on the multipoint circuit
- E.
There is never a chance for ¡°collision,¡± or two computers trying to send data at the same time
Correct Answer
A. Computers wait until the circuit is free before they send dataExplanation
The explanation for the given correct answer is that computers wait until the circuit is free before they send data. This means that when multiple computers are connected to a circuit, they take turns sending data instead of trying to send data simultaneously. This helps to avoid collisions or conflicts where two computers may try to send data at the same time, which can lead to data loss or corruption. By waiting for the circuit to be free, the computers ensure that the data transmission is smooth and efficient.Rate this question:
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- 27.
***With odd parity (assume that the parity bit (in bold) has been placed at the end of each of the following) and a 7-bit ASCII code, which of the following is incorrect?
- A.
01101011
- B.
00011011
- C.
00100101
- D.
10110110
- E.
11111110
Correct Answer
B. 00011011Explanation
The given code uses odd parity, which means that the number of 1s in each code word should be odd. Looking at the binary codes, we can count the number of 1s in each code word. For 01101011, there are 5 1s, for 00011011 there are 4 1s, for 00100101 there are 3 1s, for 10110110 there are 6 1s, and for 11111110 there are 7 1s. Therefore, the code word 00011011 has an even number of 1s, making it the incorrect option.Rate this question:
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- 28.
***The ____________ layer links the application layer with the network layer and is responsible for end-to-end delivery of messages.
- A.
Physical
- B.
Transport
- C.
Session
- D.
Presentation
- E.
Data link
Correct Answer
B. TransportExplanation
The transport layer is responsible for the end-to-end delivery of messages between the application layer and the network layer. It ensures reliable and efficient transmission of data by breaking it into smaller segments, adding sequence numbers, and providing error detection and correction. This layer also handles flow control and congestion control to prevent network congestion and ensure smooth communication between the sender and receiver.Rate this question:
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- 29.
***The source port number tells the destination station _____________.
- A.
Which computer sent the TCP packet.
- B.
Which application layer program that the packet should be sent
- C.
Which application layer process the packet is from.
- D.
The IP address of the source computer.
- E.
The IP address of the destination computer.
Correct Answer
C. Which application layer process the packet is from.Explanation
The source port number in a TCP packet identifies the specific application or process on the sending computer that generated the packet. This allows the destination station to determine which application layer process the packet is from.Rate this question:
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- 30.
***Server name resolution is done using the:
- A.
Address Resolution Protocol
- B.
Border Gateway Protocol
- C.
Internet Control Message Protocol
- D.
Routing Information Protocol
- E.
Domain Name Service
Correct Answer
E. Domain Name ServiceExplanation
Server name resolution is done using the Domain Name Service (DNS). DNS is responsible for translating domain names into IP addresses, allowing users to access websites and other resources on the internet using easy-to-remember names instead of numerical IP addresses. When a user enters a domain name in their browser, the DNS server is queried to find the corresponding IP address for that domain name. This process is crucial for the functioning of the internet, as it enables communication between servers and clients using human-readable domain names.Rate this question:
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- 31.
***_____________ provide information about resources on the network that are available to the users, such as shared printers, file servers and application software.
- A.
Network Services
- B.
Directory Services
- C.
Client Services
- D.
Computing Services
- E.
Remote Access Services
Correct Answer
B. Directory ServicesExplanation
Directory services provide information about resources on the network that are available to the users, such as shared printers, file servers, and application software. These services help users locate and access these resources efficiently by maintaining a centralized database of network resources and their attributes. This allows users to easily search for and connect to the resources they need, improving productivity and collaboration within the network.Rate this question:
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- 32.
***Which of the following is not true about CSMA/CD?
- A.
The acronym refers to Carrier Sense Multiple Access with Collision Detection
- B.
It is used in token ring protocol LANs
- C.
It is a contention-based media access control technique
- D.
When a collision has occurred, the computers that wish to transmit wait a random amount of time after a colliding message before attempting to retransmit
- E.
Computers on the circuit ¡®listen¡¯ before transmitting
Correct Answer
B. It is used in token ring protocol LANs -
- 33.
***Switch-based Ethernet:
- A.
Uses a hub to connect computers
- B.
Has a physical topology of a ring
- C.
Has a logical topology of a ring
- D.
Has a logical topology of a bus
- E.
Usually enables all attached circuits to send or receive packets simultaneously
Correct Answer
E. Usually enables all attached circuits to send or receive packets simultaneouslyExplanation
Switch-based Ethernet usually enables all attached circuits to send or receive packets simultaneously. This is because switches use a technique called packet switching, where they analyze the destination address of each incoming packet and forward it to the appropriate port. This allows for more efficient use of network bandwidth as multiple devices can transmit and receive data at the same time without interference. Unlike hubs, which share the bandwidth among all connected devices, switches provide dedicated bandwidth to each port, ensuring better performance and faster data transfer rates.Rate this question:
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- 34.
***Each of the circuits connected to a switch is a separate _______________ circuit connecting the switch to a device on the network.
- A.
Multipoint
- B.
Point-to-point
- C.
Shared
- D.
Ring
- E.
Star
Correct Answer
B. Point-to-pointExplanation
Each of the circuits connected to a switch is a separate point-to-point circuit connecting the switch to a device on the network. This means that each circuit provides a dedicated connection between the switch and a specific device, allowing for direct communication without interference from other devices. This type of circuit is commonly used in networks where devices need to communicate directly with each other, such as in a local area network (LAN) setup.Rate this question:
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- 35.
***Which of the following is not a WLAN standard?
- A.
802.15
- B.
802.11a
- C.
802.3
- D.
802.11b
- E.
802.11g
Correct Answer
C. 802.3Explanation
802.3 is not a WLAN standard because it is actually an Ethernet standard. WLAN stands for Wireless Local Area Network, which refers to wireless communication within a limited area. On the other hand, 802.3 is an Ethernet standard that defines the physical and data link layer specifications for wired Ethernet networks. Therefore, 802.3 is not applicable to WLANs.Rate this question:
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- 36.
***CSMA/CA is an acronym for:
- A.
Carrier Sense Multiple Access with Collision Acknowledgment
- B.
Carrier Sense Mode Access with Carrier Avoidance
- C.
Carrier Sense Multiple Access with Collision Avoidance
- D.
Carrier Sensory Multiple Access without Collision Acknowledgment
- E.
Carrier Sense Multiple Acknowledgment with Collision Avoidance
Correct Answer
C. Carrier Sense Multiple Access with Collision AvoidanceExplanation
CSMA/CA stands for Carrier Sense Multiple Access with Collision Avoidance. This protocol is used in wireless networks to avoid collisions when multiple devices try to transmit data simultaneously. Before transmitting, a device checks the channel for any ongoing transmissions (carrier sense). If the channel is clear, the device waits for a random amount of time (backoff) to further reduce the chances of collisions. This random backoff helps in avoiding multiple devices from transmitting at the same time, thus reducing collisions and improving network efficiency.Rate this question:
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- 37.
***Which of the following is not determined by a site survey?
- A.
Feasibility of the desired coverage
- B.
Potential sources of interference
- C.
The security of the WLAN
- D.
Estimated number of access points needed to provide coverage
- E.
Current locations of the wired network into which the WLAN will connect.
Correct Answer
C. The security of the WLANExplanation
A site survey is conducted to gather information about the physical environment and assess factors that can affect the performance and coverage of a wireless network. It helps in determining the feasibility of desired coverage, identifying potential sources of interference, estimating the number of access points needed, and identifying the current locations of the wired network. However, the security of the WLAN is not directly determined by a site survey. Security measures such as encryption protocols, authentication methods, and firewall configurations are implemented separately to ensure the security of the WLAN.Rate this question:
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