Computer Science - Networking MCQs Part 9
1. Telecommunications networks come in a wide range of speed and capacity capabilities. Select the best fit for answer:
A.
Bandwidth alternatives
Bandwidth alternatives
B.
Switching alternating
Switching alternating
C.
Inter organizational networks
Inter organizational networks
D.
Extranets
Extranets
Answer Option A
2. Which of the following statements is correct?
A.
characteristic of the hub architecture of ARC-net is alternative routing.
characteristic of the hub architecture of ARC-net is alternative routing.
B.
characteristic of LAN is unlimited expansion
characteristic of LAN is unlimited expansion
C.
characteristic of LAN is low cost access for low bandwidth channels
characteristic of LAN is low cost access for low bandwidth channels
D.
characteristic of the hub architecture of ARC-net is directionalized transmission
characteristic of the hub architecture of ARC-net is directionalized transmission
E.
None of the above
None of the above
Answer Option D
3. A modem is connected in between a telephone line and a
A.
network
network
B.
computer
computer
C.
communication adapter
communication adapter
D.
serial port
serial port
E.
None of the above
None of the above
Answer Option C
4. What frequency range is used for TV transmission and low power microwave applications?
A.
Very Low Frequency : 3 kHz to 30 kHz
Very Low Frequency : 3 kHz to 30 kHz
B.
Medium Frequency : 300 kHz to 3 MHz
Medium Frequency : 300 kHz to 3 MHz
C.
Ultra High Frequency : 300 MHz to 3000 MHz
Ultra High Frequency : 300 MHz to 3000 MHz
D.
Super High Frequency : 3000 MHz to 30000 MHz
Super High Frequency : 3000 MHz to 30000 MHz
E.
None of the above
None of the above
Answer Option C
5. Which of the following statement is correct?
A.
Satellite transponders use a higher frequency for reception of radiation from earth stations and lower frequency for transmission to earth stations.
Satellite transponders use a higher frequency for reception of radiation from earth stations and lower frequency for transmission to earth stations.
B.
Satellite transponders contain a device that echos the radiation without change from one point on earth to another
Satellite transponders contain a device that echos the radiation without change from one point on earth to another
C.
Satellite transponder contain devices that transform the message sent from one location on earth to a different code for transmission to another location
Satellite transponder contain devices that transform the message sent from one location on earth to a different code for transmission to another location
D.
satellite transponders us lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations
satellite transponders us lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations
E.
None of the above
None of the above
Answer Option A
6. We can receive data either through our television aerial or down our telephone lines and display this data on our television screen. What is the general name given to this process?
A. Viewdata
B. Teletext
C. Telesoftware
D. Videotex
E. None of the above
Answer Option D
7. ASK, PSK, FSK, and QAM are examples of _____ encoding.
A. digital-to-digital
B. digital-to-analog
C. analog-to-analog
D. analog-to-digital
Answer Option B
8. The data-link layer, in reference to the OSI model, specifies
A. data link procedures that provide for the exchange of data via frames that can be sent and received
B. the interface between the X.25 network and packet mode device
C. the virtual circuit interface to packet-switched service
D. All of the above
E. None of the above
Answer Option A
9. What function does a serial interface perform in data communication?
A. Converts serial data into audio signals
B. Converts analog signals into digital signals
C. Converts parallel data into a stream of bits
D. Decodes incoming signals into computer data
E. None of the above
Answer Option C
10. You need to determine whether IP information has been assigned to your Windows NT. Which utility should you use?
A. NBTSTAT
B. NETSTAT
C. IPCONFIG
D. WINIPCFG
E. PING
Answer Option C
11. Eight stations are competing for the use of the shared channel using the modified Adaptive free walk protocol by Gallager. If the stations 7 and 8 are suddenly become ready at once, how many bit slots are needed to resolve the contention?
A. 1 slots
B. 5 slots
C. 10 slots
D. 14 slots
Answer Option B
12. When two computers communicate with each other, they send information back and forth. If they are separated by a reasonable distance, they can send and receive the information through a direct cable connection which is called a null-modem connection. Presently what is the maximum distance in metres permitted in this null-modem connection?
A. 80
B. 100
C. 30
D. 150
E. None of the above
Answer Option C
13. Modulation in which the two binary values are represented by two different amplitudes of the carrier frequency is known as
A. Amplitude-shift keying
B. Amplitude
C. Amplitude modulation
D. Aloha
E. None of the above
Answer Option A
14. You have been contracted to install a windows NT network in an office that is located in a strip mall. The office is located next to the power plant of the building, so a UPS (uninterruptible power supply) has already been installed. What type of cable should you use for the network cabling? Choose the best answer.
A. TI
B. UTP
C. Fiber-optic
D. PSTN
E. STP
Answer Option E
15. Communication circuits that transmit data in both directions but not at the same time are operating in
A. a simplex mode
B. a half-duplex mode
C. a full-duplex mode
D. an asynchronous mode
E. None of the above
Answer Option B
16. In a synchronous modem, the digital-to-analog converter transmits signal to the
A. equalizer
B. modulator
C. demodulator
D. terminal
E. None of the above
Answer Option A
17. If the client receives an address from a DHCP server, what is the only information available in the Network Properties dialog box?
A. The IP address
B. The subnet address
C. That the client is receiving its address from DHCP
D. The default gateway
E. None of the above
Answer Option C
18. An internetworking protocol that provides virtual circuit service across multiple X.25 protocol, is
A. X.75
B. X.25
C. X.400
D. X.21
E. None of the above
Answer Option A
19. Which of the following TCP/IP protocol is used for transferring files from one machine to another?
A. RARP
B. ARP
C. TCP
D. FTP
E. None of the above
Answer Option D
20. Which of the following is an example of bounded medium?
A. Coaxial cable
B. Wave guide
C. Fiber optic cable {d) All of the above
D. None of the above
Answer Option D
21. Which transmission mode is used for data communication along telephone lines?
A. Parallel
B. Serial
C. Synchronous
D. Asynchronous
E. None of the above
Answer Option B
22. Who invented the modem?
A. Wang Laboratories Ltd.
B. AT & T Information Systems, USA
C. Apple Computers Inc.
D. Digital Equipment Corpn.
E. None of the above
Answer Option B
23. With an IP address starting at 200, you currently have 10 subnets. What subnet mask should you use to maximize the number of available hosts?
A. 192
B. 224
C. 240
D. 248
E. 252
Answer Option C
24. Which of the following communications modes support two-way traffic but in only one direction of a time?
A. simplex
B. half-duplex
C. three-quarters duplex
D. full-of the above
E. None of the above
Answer Option B
25. Which of the following TCP/IP internet protocol a diskless machine uses to obtain its IP address from a server?
A. RDP
B. RARP
C. RIP
D. X.25
E. None of the above
Answer Option B
26. In OSI network architecture, the dialogue control and token management are responsibilities of
A. session layer
B. network layer
C. transport layer
D. data link layer
E. None of the above
Answer Option A
27. Which of the following transmission systems provides the highest data rate to an individual device
A. Computer bus
B. Telephone lines
C. Voice band modem
D. leased lines
E. None of the above
Answer Option A
28. Which of the following connectivity devices is used to extend a network on a purely mechanical basis?
A. Gateway
B. Switch
C. Router
D. Active hub
Answer Option D
29. The IEEE 802 project of the 1980s involved further defining the lower two layers of the OSI model. A number of standards were agreed upon during that time. Which of the following is the standard for Ethernet?
A. 802.2
B. 802.3
C. 802.4
D. 802.5
E. 802.6
Answer Option B
30. Which of the following digits are known as the terminal number of the Network User Address (NUA)?
A. 5-7
B. 1-4
C. 8-12
D. 13-14
E. None of the above
Answer Option C
31. Which of the following device is used with an X.25 network to provide service to asynchronous terminals
A. repeater
B. bridges
C. gateway
D. Packet assembler/disassemble
E. None of the above
Answer Option D
32. A medium access control technique for multiple access transmission media is
A. Aloha
B. Amplitude
C. Angle modulation
D. Attenuation
E. None of the above
Answer Option A
33. The core diameter of a single-mode fibers is about
A. 10 times the wavelength of the light carried in the fiber
B. 10 times the fiber radius
C. 7 times the light carried in the fiber
D. 3 times the wavelength of the light carried in the fiber
E. None of the above
Answer Option A
34. Which of the following TCP/IP protocol is used for remote terminal connection service?
A. TELNET
B. FTP
C. RARP
D. UDP
E. None of the above
Answer Option A
35. Networks where end user workstations are tied to LAN servers to share resources and application processing.
A. Internetworked enterprise
B. Information super highway
C. Business applications of telecommunications
D. Client/Server networks
Answer Option D
36. The frequency range : 300 kHz to 3 MHz is used for
A. AM radio transmission
B. FM radio transmission
C. TV transmission
D. microwave communications, satellite and radar
E. None of the above
Answer Option A
37. With an IP address of 201.142.23.12, what is your default subnet mask?
A. 0.0.0.0
B. 255.0.0.0
C. 255.255.0.0
D. 255.255.255.0
E. None of the above
Answer Option D
38. A smart modem can dial, hang up and answer incoming calls automatically. Can you tell who provides the appropriate instruction to the modem for this purpose?
A. Communications software
B. Error detecting protocols
C. Link access procedure (LAP)
D. Telecommunications
E. None of the above
Answer Option A
39. IEEE project 802 divides the data link layer into an upper _____ sublayer and a lower _____ sublayer.
A. HDLC, PDU
B. PDU, HDLC
C. MAC, LLC
D. LLC, MAC
E. None of the above
Answer Option D
40. Two computers that communicate with each other use a simple parity check to detect errors for ASCII transmissions. Which of the following events will always lead to an undeleted error?
A. one bit or any odd number of bits inverted in a block of data during transmission
B. two bits or any even number of bits inverted in a block during transmission
C. one bit or any odd number of bits inverted in a byte during transmission
D. two bits or any even number of bits inverted in a byte during transmission
E. None of the above
Answer Option D
41. Which utility is an all-purpose tool for troubleshooting TCP/IP problems?
A. NBTSTAT
B. Netstat
C. PING
D. Hostname
E. None of the above
Answer Option C
42. In communication satellite, multiple repeaters are known as
A. detector
B. modulator
C. stations
D. transponders
E. None of the above
Answer Option D
6. We can receive data either through our television aerial or down our telephone lines and display this data on our television screen. What is the general name given to this process?
A. Viewdata
B. Teletext
C. Telesoftware
D. Videotex
E. None of the above
Answer Option D
7. ASK, PSK, FSK, and QAM are examples of _____ encoding.
A. digital-to-digital
B. digital-to-analog
C. analog-to-analog
D. analog-to-digital
Answer Option B
8. The data-link layer, in reference to the OSI model, specifies
A. data link procedures that provide for the exchange of data via frames that can be sent and received
B. the interface between the X.25 network and packet mode device
C. the virtual circuit interface to packet-switched service
D. All of the above
E. None of the above
Answer Option A
9. What function does a serial interface perform in data communication?
A. Converts serial data into audio signals
B. Converts analog signals into digital signals
C. Converts parallel data into a stream of bits
D. Decodes incoming signals into computer data
E. None of the above
Answer Option C
10. You need to determine whether IP information has been assigned to your Windows NT. Which utility should you use?
A. NBTSTAT
B. NETSTAT
C. IPCONFIG
D. WINIPCFG
E. PING
Answer Option C
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