download instant at

Chapter 2

Objective Test Questions

True/False Questions

  1. Data communication is the process of transferring data, information, or commands between two computers or between a computer and a terminal.
  1. A message moves over a communication line in the form of a signal, such as a fluctuating electric current or a flashing light.
  1. A broadband line transmits one signal at a time. A baseband line is divided into distinct channels that act much like independent wires and carry simultaneous signals in parallel.
  1. A network consists of two or more computers (usually more) linked by communication lines.
  1. Each device (for example, a computer or a terminal) on a network is called a host.
  1. A medium provides physical connectivity.
  1. In the US, today’s best-known communication option is POTS.
  1. Capacity is a measure of the amount of data a communication medium can transmit in a given period of time.
  1. Compression reduces the number of bits that must be transmitted from the sender to the receiver.
  1. A group of computers located in close proximity (for example, within the same building) form a local area network, or LAN.
  1. A wide area network, or WAN links computers or LANs that are geographically disbursed.
  1. In the client/server model, the star computer controls access to a resource needed by the workstations.
  1. In a client/server network, servers are fast, powerful computers with considerable mass storage capacity that control access to all the network’s shared resources and services, and the various workstations act as clients.
  1. In a bus network, the linked computers are treated as equals, with no central server to provide control.
  1. The process of linking two or more networks is called internetworking.
  1. A bridge is a computer that links two or more similar networks. A gateway is a computer that links dissimilar networks.
  1. A Web server is used to read data packets, identify which computer the information is being sent to, and forward the message down the shortest or fastest route toward its destination.
  1. A data communication protocol is an agreed upon format or procedure (in effect, a set of rules) for transmitting data between two devices.
  1. Some LANs and most wide-area-networks rely on point-to-point transmission, passing the signal from node to node across the network. On less structured networks (typically WANs), the next node in the chain is identified through a process called switching.
  1. A clash occurs when two or more nodes transmit data simultaneously (or nearly simultaneously) over the same line and their messages interfere with each other.
  1. On a token passing network, collisions cannot happen.
  1. On a collision detection network, when a collision occurs it is detected electronically and the affected messages are retransmitted under the control of a network management protocol.
  1. Generally, token passing works best on lightly utilized networks and collision detection works best on heavily utilized networks
  1. Ethernet is a popular, inexpensive, high-speed local area data communication protocol designed by Xerox Corporation for a bus or star topology.
  1. Packet switching achieves efficient message delivery by sharing the line among numerous users.
  1. The best-known protocol used by the TCP/IP transport layer is Ethernet.
  1. The Internet protocol that breaks information into data packets and reassembles them on the receiving end is TCP/IP.
  1. The server translates a domain name to an actual IP address.
  1. The International Organization for Standardization’s seven-layer TCP/IP model is a reference model for packet switching, computer-to-computer communication
  1. The Internet is sometimes defined as the set of interconnected computers that use TCP/IP.
  1. The Internet model’s Internet layer holds protocols that directly support application programs.
  1. File transfer protocol (FTP) is a well-known application layer protocol that allows a client to either download a file from or upload a file to a server.
  1. Emulator is a terminal emulation protocol that allows a user to log onto a remote computer and enter keyboard commands as though he or she were actually on that computer.
  1. Users of the World Wide Web rely on the file transfer protocol (FTP) to download web pages.
  1. The simple mail transfer protocol (SMTP) is used to send an e-mail message from the originator’s computer to the receiver’s mail server.
  1. A post office protocol (POP) delivers accumulated mail from the server to the receiver’s computer.
  1. SNMP is a network management tool that monitors the activity of a network’s various hardware and software components.
  1. The TCP/IP transport layer is responsible for ensuring successful end-to-end logical transmission of the entire message between a process (or program) on the client and a process on the server.
  1. Internet protocol (IP) is the TCP/IP Internet layer’s standard protocol.
  1. The TCP/IP Internet or network layeris where packets of data are transferred from a node to the physical network and on to the next node.
  1. In an open standard, the details of the system architecture are published and available to everyone.
  1. Open standards promote platform independence and interoperability.
  1. The facilities that connect a customer to the Internet form the user’s NSP.
  1. Typically, a residential customer’s access network connects him or her to an Internet Service Provider (ISP).
  1. A client is a computer attached to the Internet that runs application programs.
  1. The backbone is a network of high-speed communication lines that carries the bulk of the traffic between major segments of the Internet.
  1. The backbone is run by commercial network access points (NAPs), each of which operates a national wide-area network and sells bandwidth to the Internet service providers.
  1. The network service providers are interconnected and exchange data through network access points (NAPs).
  1. Regional Internet service providers operate statewide or regional backbones.
  1. A local area network is a set of nodes that are administered as a unit; for example, all the networked computers belonging to Miami University or Microsoft Corporation.
  1. A URL consists of two to four words separated by dots
  1. A top-to-bottom domain name hierarchy is read from right to left in a domain name.
  1. A(n) hyperlink is a number that uniquely identifies a specific node on the Internet.
  1. The actual physical transmission of messages and data across the Internet requires an IP address, not a domain name.
  1. All application layer protocols are associated with a logical, 16-bit MAC address.
  1. To physically transmit a message to a final (destination) node not directly linked to the Internet (for example, a user workstation), you must have a domain name address for that node.
  1. On the final hop from the destination server to the destination computer, an Internet layer TCP/IP protocol called the domain name system (DNS) translates the workstation’s IP address to a MAC address, often through a table look-up process.
  1. In the domain name finance is a subnet of the companyx network.
  1. The Internet was started by a group of private companies interested in sharing information openly.
  1. The Internet is a single high-speed network connecting users world wide

Multiple Choice Questions

Note: Remove the suggested answers to get fill-in questions.

  1. ______is the process of transferring data, information, or commands between two computers or between a computer and a terminal.
  2. Input and output
  3. Data transmission
  4. Data communication
  5. Communication
  1. Which of the following is not required for successful communication?
  2. a transmitter
  3. a message
  4. a wire
  5. a receiver
  1. A message moves over a communication line in the form of a ______, such as a fluctuating electric current or a flashing light.
  2. protocol
  3. signal
  4. bit string
  5. code
  1. A ______line transmits one signal at a time. A ______line is divided into distinct channels that act much like independent wires and carry simultaneous signals in parallel.
  2. baseband/ broadband
  3. broadband/baseband
  4. voice grade/trunk
  5. DSL/cable
  1. A(n) ______consists of two or more computers (usually more) linked by communication lines.
  2. infrastructure
  3. channel
  4. switch
  5. network
  1. Each device (for example, a computer or a terminal) on a network is called a ______.
  2. workstation
  3. host
  4. node
  5. access point
  1. A ______provides physical connectivity.
  2. medium
  3. network operating system
  4. network
  5. none of the above
  1. In the US, today’s best-known communication option is ______.
  2. packet switching
  3. POTS
  4. satellite
  5. broadcasting
  1. ______is a measure of the amount of data a communication medium can transmit in a given period of time.
  2. Bit rate
  3. Byte rate
  4. Bandwidth
  5. Capacity
  1. Which of the following is not a high-speed alternative to a POTS voice grade line?
  2. a DSL line
  3. cable TV service
  4. point-to-point laser service
  5. home satellite service
  1. ______reduces the number of bits that must be transmitted from the sender to the receiver.
  2. Encryption
  3. Attenuation
  4. Compression
  5. Encoding
  1. A group of computers located in close proximity (for example, within the same building) form a ______.
  2. regional network
  3. wide area network, or WAN
  4. proximity network
  5. local area network, or LAN
  1. A(n) ______links computers or LANs that are geographically disbursed.
  2. wide area network, or WAN
  3. internetwork
  4. local area network, or LAN
  5. distributed network
  1. In the client/server model, the ______controls access to a resource needed by the ______.
  2. star computer/workstations
  3. client/servers
  4. host/lackey
  5. server/ clients
  1. In ______networks, the servers are fast, powerful computers with considerable mass storage capacity that controls access to all the network’s shared resources and services, and the various workstations act as clients.
  2. ring
  3. peer-to-peer
  4. client/server
  5. star
  1. In a ______network, the linked computers are treated as equals, with no central server to provide control.
  2. peer-to-peer
  3. client/server
  4. loop
  5. bus
  1. The process of linking two or more networks is called ______.
  2. communication
  3. routing
  4. networking
  5. internetworking
  1. A ______is a computer that links two or more similar networks. A ______is a computer that links dissimilar networks.
  2. bridge/gateway
  3. gateway/bridge
  4. It is impossible to link dissimilar networks.
  5. Linking similar networks is unnecessary.
  1. A(n) ______is used to read data packets, identify which computer the information is being sent to, and forward the message down the shortest or fastest route toward its destination.
  2. ISP
  3. router
  4. Web server
  5. bridge
  1. A ______is an agreed upon format or procedure (in effect, a set of rules) for transmitting data between two devices.
  2. process
  3. script
  4. standard interface
  5. protocol
  1. Most bus and some star local area networks ______messages, sending every message to every node on the network.
  2. broadcast
  3. route
  4. replicate
  5. The premise of the question is false.
  1. Some LANs and most wide-area-networks rely on point-to-point transmission, passing the signal from node to node across the network. On less structured networks (typically WANs), the next node in the chain is identified through a process called ______.
  2. routing
  3. switching
  4. both a and b
  5. neither a nor b
  1. A ______occurs when two or more nodes transmit data simultaneously (or nearly simultaneously) over the same line and their messages interfere with each other.
  2. clash
  3. discordancy
  4. conflict
  5. collision
  1. On a ______network, collisions cannot happen.
  2. collision detection
  3. local area
  4. token passing
  5. wide area
  1. On a ______network, when a collision occurs it is detected electronically and the affected messages are retransmitted under the control of a network management protocol.
  2. collision detection
  3. token passing
  4. routing
  5. internetworking
  1. Generally, ______works best on lightly utilized networks and ______works best on heavily utilized networks
  2. token passing/collision detection
  3. collision detection/token passing
  4. routing/collision detection
  5. routing/token passing
  1. ______is a popular, inexpensive, high-speed local area network data communication protocol designed by Xerox Corporation for a bus or star topology.
  2. TCP/IP
  3. Ethernet
  4. OSI
  5. There is no such protocol.
  1. ______achieves efficient message delivery by sharing the line among numerous users.
  2. Collision detection
  3. Token passing
  4. Routing
  5. Packet switching
  1. The term Internet is an acronym for ______.
  2. in-Ethernet
  3. internetworking
  4. internetwork
  5. It is not an acronym.
  1. ______allows us to not have to remember numeric IP addresses.
  2. DNS
  3. TCP
  4. IP
  5. HTTP
  1. The best-known protocol used by the TCP/IP transport layer is ______.
  2. Internet protocol (IP)
  3. transmission control protocol (TCP)
  4. OSI protocol
  5. Ethernet
  1. The Internet protocol that breaks information into data packets and reassembles them on the receiving end is ______.
  2. TCP
  3. IP
  4. TCP/IP
  5. FTP
  1. With ______, bandwidth is shared with other users on the local loop.
  2. dial up
  3. ISDN
  4. satellite
  5. cable
  1. All of the following are examples of network topology except:
  2. ring
  3. star
  4. bus
  5. client/server
  1. The translation of a domain name to an actual IP address is done by ______.
  2. the server
  3. the browser
  4. domain name system (DNS)
  5. Internet translation service (ITS)
  1. The original version of the Internet, called ARPANET, was designed to be ______and ______.
  2. robust/fault tolerant
  3. fast/secure
  4. accessible/secure
  5. user friendly/fast
  1. The International Organization for Standardization’s seven-layer ______model is a reference model for packet switching, computer-to-computer communication
  2. Internet
  3. Open Systems Interconnect (OSI)
  4. TCP/IP
  5. datacom
  1. The Internet is sometimes defined as the set of interconnected computers that use ______.
  2. TCP/IP
  3. the OSI model
  4. http
  5. html
  1. The Internet model’s ______layer holds protocols that directly support application programs.
  2. application
  3. transport
  4. Internet
  5. network access
  1. ______is a well-known application layer protocol that allows a client to either download a file from or upload a file to a server.
  2. E-mail
  3. File transfer protocol (FTP)
  4. Network copy (NC)
  5. None of the above
  1. ______is a terminal emulation protocol that allows a user to log onto a remote computer and enter keyboard commands as though he or she were actually on that computer.
  2. Emulator
  3. Rlog
  4. Telnet
  5. Remote
  1. Users of the World Wide Web rely on ______to download web pages.
  2. hypertext markup language (HTML)
  3. the file transfer protocol (FTP)
  4. the hypertext transfer protocol (HTTP)
  5. the page management protocol (PMP)
  1. ______is used to send an e-mail message from the originator’s computer to the receiver’s mail server.
  2. A post office protocol (POP)
  3. The file transfer protocol (FTP)
  4. The e-mail protocol (EMP)
  5. The simple mail transfer protocol (SMTP)
  1. ______delivers accumulated mail from the server to the receiver’s computer.
  2. A post office protocol (POP)
  3. The simple mail transfer protocol (SMTP)
  4. The file transfer protocol (FTP)
  5. None of the above
  1. ______is a network management tool that monitors the activity of a network’s various hardware and software components.
  2. A network operating system (NOS)
  3. System monitor (SM)
  4. Network monitor (NM)
  5. The simple network management protocol (SNMP)
  1. The TCP/IP ______layer is responsible for ensuring successful end-to-end logical transmission of the entire message between a process (or program) on the client and a process on the server.
  2. transport
  3. application
  4. physical
  5. Internet
  1. ______is the TCP/IP Internet layer’s standard protocol.
  2. Transmission Control Protocol (TCP)
  3. Internet protocol (IP)
  4. the OSI model protocol
  5. None of the above
  1. The TCP/IP ______layeris where packets of data are transferred from a node to the physical network and on to the next node.
  2. network access or physical layer
  3. transport
  4. Internet or network
  5. application
  1. In a(n) ______standard, the details of the system architecture are published and available to everyone.
  2. proprietary
  3. national
  4. open
  5. international
  1. ______standards promote platform independence and interoperability.
  2. Proprietary
  3. Closed
  4. Government
  5. Open
  1. The facilities that connect a customer to the Internet form the user’s ______.
  2. ISP
  3. access network
  4. NSP
  5. LAN
  1. Typically, a residential customer’s access network connects him or her to ______.
  2. a network service provider (NSP)
  3. a network access point (NAP)
  4. an Internet Service Provider (ISP)
  5. a host
  1. A ______is a computer attached to the Internet that runs application programs.
  2. server
  3. host
  4. client
  5. none of the above
  1. The ______is a network of high-speed communication lines that carries the bulk of the traffic between major segments of the Internet.
  2. ISP
  3. regional ISP
  4. backbone
  5. NSP
  1. The backbone is run by commercial ______, each of which operates a national wide-area network and sells bandwidth to the Internet service providers.
  2. network access points (NAPs)
  3. bandwidth agents
  4. telephone companies
  5. network service providers (NSPs)
  1. The Network Service Providers are interconnected and exchange data through ______.
  2. regional Internet service providers (RISPs)
  3. network access points (NAPs)
  4. Internet service providers (ISPs)
  5. the World Wide Web
  1. ______operate statewide or regional backbones.
  2. the World Wide Web
  3. Regional Internet service providers
  4. Network access points (NAPs)
  5. Internet service providers (ISPs)
  1. A ______is a set of nodes that are administered as a unit; for example, all the networked computers belonging to Miami University or Microsoft Corporation.
  2. super-node
  3. subnet
  4. domain
  5. local area network
  1. A ______consists of two to four words separated by dots
  2. high-level domain
  3. sub-domain
  4. IP addrsss
  5. domain name
  1. A top-to-bottom domain name hierarchy is read from ______in a domain name.
  2. left to right
  3. right to left
  4. it depends on the domain name
  5. The premise of the question is false.
  1. A(n) ______is a number that uniquely identifies a specific node on the Internet.
  2. domain name
  3. media access control (MAC) address
  4. IP address
  5. hyperlink
  1. The actual physical transmission of messages and data across the Internet requires ______, not ______.
  2. A MAC address/an IP address
  3. A MAC address/a domain name
  4. a domain name/an IP address
  5. an IP address/a domain name
  1. All application layer protocols are associated with a logical, 16-bit ______.
  2. socket number
  3. IP address
  4. MAC address
  5. port number
  1. To physically transmit a message to a final (destination) node not directly linked to the Internet (for example, a user workstation), you must have a(n) ______address for that node.
  2. IP
  3. media access control (MAC)
  4. domain name
  5. port
  1. On the final hop from the destination server to the destination computer, an Internet layer TCP/IP protocol called the ______translates the workstation’s IP address to a MAC address, often through a table look-up process.
  2. Internet protocol (IP)
  3. transmission control protocol (TCP)
  4. address resolution protocol (ARP)
  5. domain name system (DNS)

Answers: