School of Engineering ITCN MC VWeek01 2011
Virtual Week Assessment
24th – 28th October 2011
Instructions
The following questions are based on the material that you have been introduced to in
this course. You are expected to read the notes that accompany the lectures which will
help you to answer the questions. You are also expected to carry out research to answer
any questions that are not covered in the notes.
Clearly mark your answer on the printed ANSWER SHEET on the following page for
each question. Do not submit the questions, submit only the answer sheet.
Note that some of the questions are multiple choice, multiple answer. Failure to choose
ALL of the correct options will score a lower mark for that question.
Assessment Value
This assessment is worth 5 % of the total marks for this course
Submission
This work must be handed into the Student Centre on or before 13:30 hrs on Tuesday 1st
November 2011 using the answer sheet supplied below. Any other format of submission
WILL NOT BE MARKED.
You must DOWNLOAD AND PRINT a coursework header sheet to enable you to
submit your work at the Student Centre.
You will need to use the Portal or visit the Registry to accomplish this.
http://registry1.gre.ac.uk/coursework/cwview.asp . This page can be accessed from any
PC connected to the Internet, at home or on campus.
To create your header sheet for this item you will need your registration number and this
coursework ID. Coursework Header Sheet ID 187794
Late submissions will suffer the penalties described in the School Regulations.
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ANSWER SHEET – ONLY SUBMIT THIS PAGE ALONG WITH YOUR HEADER SHEET
ITCN VWeek1 2010-11
Student Name Date Score
/ 50
For each question, mark the answer that you consider to be most appropriate by marking a vertical line
through the letter that corresponds with your chosen response.
A sample answer displays the method of entering responses. The response 'b' has been chosen.
Question Number Your Responses For Marking only
Sample Answer (a) (c) (d)
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Total Please leave this row blank
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1. The subscriber loop entering most homes supports which one of the following
technologies:
a) Broadband
b) xDSL
c) Cable
d) Satellite
2. Two-way, non-simultaneous network traffic is known as:
a) Full duplex
b) Simplex
c) Half duplex
d) Dual simplex
3. Which product of the Philco Corporation revolutionised computer construction?
a) The valve
b) The transistor
c) The resistor
d) The electrolytic capacitor
4. Which of the following is NOT a network topology?
a) Train
b) Bus
c) Star
d) Ring
5. John von Neumann defined a computer architecture which?
a) Used the same memory both to store programs and data
b) Used a mercury bath programme store
c) Did not require valves
d) All of the above
6. The early experiments with the Internet were testing which technology?
a) Email
b) Frame relay
c) Packet switching
d) Circuit switching
7. Two early networked applications that are still in use today are:
(choose TWO)
a) TELNET
b) CSMA/ CD
c) FTP
d) DARPA
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8. The first Ethernet Local Area Network was rated as:
a) 10 Mbps
b) 10 kbps
c) 56 kbps
d) 4 Mbps
9. BOOTP was the protocol that could:
a) Assign MAC addresses to a network client
b) Replace DHCP
c) Supply IPv4 addresses to computers on a LAN
d) Replace the data link layer
10. NCP was replaced in the early 1980s with which protocol suite?
a) TCP/ IP
b) ARPA
c) The OSI model
d) TELNET
11. Which idea was first proposed by Tim Berners-Lee?
a) TELNET
b) A distributed hypermedia technology
c) Online shopping
d) Ethernet
12. What is the main difference between the Internet and the World Wide Web
(www)?
a) The Internet is carried by the www
b) The Internet carries all www traffic
c) The Internet is free whereas the www is not
d) The Internet is a system of web pages whereas the www is a set of
communication channels
13. The Internet was originally set up to:
a) Support Facebook
b) Improve computer communications
c) Support the American Military during the Cold War by providing a
communication system that could function even when damaged
d) Allow email to be sent between remote places in the world
14. A Protocol Architecture is essential for computer communication because:
a) It simplifies the tasks required for communications
b) It allows ISPs to set up connections with home users
c) The USA imposed a global restriction on Internet usage to keep unauthorised
users from accessing the www
d) It allowed one company to manufacture networking equipment
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15. What are the three key features of a protocol?
a) Syntax, Semantics, Structure
b) Sessions, Semantics, Timing
c) Syntax, Semantics, Timing
d) Sessions, Statistics, Timing
16. What is the correct order of the layers in the OSI model?
a) Application, Session, Presentation, Transport, Network, Data Link, Physical
b) Application, Presentation, Transport, Session, Network, Data Link, Physical
c) Application, Presentation, Session, Transport, Data Link, Network, Physical
d) Application, Presentation, Session, Transport, Network, Data Link, Physical
17. Which OSI layer establishes, manages and terminates the connections between
the local and remote application?
a) Session
b) Application
c) Network
d) Presentation
18. Which OSI layer provides independence from data representation?
a) Application
b) Network
c) Session
d) Presentation
19. The TCP/IP model combines which OSI layers into its Application layer?
a) Application, Network, Transport
b) Network, Data Link, Physical
c) Application, Presentation, Session
d) Physical, Transport, Application
20. Prior to the DNS, how were host names resolved?
a) A small hello packet was sent to the remote host requesting its IP address
b) There were no hosts
c) A text file called hosts could be downloaded from the Network Information
Center
d) Users could guess the IP address as there were so few online hosts
21. Data-link layer information includes:
a) IP addressing
b) Port numbers
c) Source and destination MAC addresses
d) Segment number
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22. The bandwidth of a network connection is measured in: (choose TWO)
a) Bytes per second
b) Bits per second
c) kBps
d) Mbps
23. What is the bandwidth of a T1 connection?
a) 2.048 MBps
b) 1.544 Mbps
c) 2.048 Kbps
d) 2.048 MBps
24. What is the binary number 1101010110000110 expressed in decimal?
a) 54405
b) 54662
c) 54750
d) 54711
25. A characteristic of a Local Area Network (LAN) is:
a) It covers one building or a group of closely spaced buildings
b) All equipment is publicly owned
c) The cabling is entirely made of copper twisted pair
d) The data rate is low
26. Two signalling options for early Ethernet networks were: (choose TWO)
a) Broadband
b) Wideband
c) Baseband
d) Brass band
27. A LAN allows:
a) Inter-team communications
b) Expensive hardware to be shared
c) Applications to be shared, centrally controlled and updated
d) All of the above
28. Data-link layer addresses are also known as: (choose TWO)
a) Hardware addresses
b) Port addresses
c) IP addresses
d) Burnt in addresses
29. Which of the following statements are false for a layer 2 switch? (choose TWO)
a) It filters arriving frames based on IP addressing information
b) It amplifies arriving signals and transmits them again on all ports
c) It examines the hardware address of each arriving frame
d) Frames are never re-transmitted through the port on which they arrived
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30. Three characteristics of microwave transmissions are: (choose THREE)
a) High directionality
b) Suitability for NLOS installations
c) Uses high frequency radio waves
d) Wavelengths are 30 cm to 1cm
31. IEEE 802.11g is a specification relating to:
a) Wireless Ethernet
b) 1000BaseFX
c) FDDI
d) Medium Access Control
32. Which of the following are unguided transmission methods? (choose THREE)
a) Radio
b) Terrestrial Microwave
c) Infra Red
d) Fibre Optic
33. The reliability of a simplex channel may be enhanced by using:
a) CRC
b) Acknowledgements
c) Retransmission requests
d) Forward Error Correction
34. Which OSI layers can implement flow control? (choose TWO)
a) Data-link
b) Physical
c) Transport
d) Network Access
35. Which of the following statements are untrue? (Choose TWO)
a) Throughput is the same as bandwidth
b) Throughput may be measures in bits per second
c) Bandwidth may be measured in bits per second OR Hertz
d) Throughput always exceeds bandwidth
36. What is the main reason for earthing electrical apparatus?
a) To protect the delicate circuitry from spikes
b) To comply with electrical regulation EIA 252
c) To prevent death or injury to the operator in case of an electrical fault
d) To ensure that the mains voltage does not fluctuate beyond predefined points
37. A characteristic of digital signals is
a) They are used to carry mains voltage
b) They vary continuously over time
c) They have predefined or discrete levels
d) The signal can be used for long distance communication
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38. Why is Kevlar used in some fibre optic cables?
a) To provide an earth path in case of a short circuit
b) For mechanical strength
c) For cancellation of stray signals
d) Because it provides an excellent path for light rays to travel through
39. Loss of signal power over a distance may be termed:
a) Interference
b) Propagation
c) Attenuation
d) Collision
40. Total Internal Reflection is employed in:
a) Coaxial cabling
b) Fibre optic cabling
c) Noise cancellation schemes
d) Satellite microwave transmission
Now that you have completed these questions, check your answers thoroughly for
mistakes and submit the ANSWER SHEET ONLY to the Student Centre on or before
16:00 hrs on Tuesday 2nd November 2010
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