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04 - Circuit Switching and Packet Switching

 1. Packet switching and circuit switching are two networking methods for …

  the transfer of email messages between mobile phones

  transferring data between two nodes or hosts

  how to cable cities using copper wire

  the blocking of hackers that try to access a secure network

 2. Switching is a method to forward ____________ coming in from the sender to the receiver at the destination address

  text messages

  all the information on the internet

  data packets

  cables

 3. Read the excerpt on the beginnings of packet switching and fill in the blanks
Paul Baran (April 29, 1926 – March 26, 2011) was a 
Polish-born Jewish American engineer who was a pioneer 
in the development of computer networks. He was one of the 
two independent inventors of packet switching, which is today 
...................................................... worldwide, 
and went on to start several companies and develop other technologies that 
are an essential part of modern digital communication
packswitching_three_men1.jpg

  the dominant and main basis for data communications in computer networks

  no longer used

  the fourth most popular basis for connecting cables in networks

  the main competitor of APPLE and IBM for PC creation

 4. The defining example of a circuit-switched network is the ………………….
When a call is made from one telephone to another, switches within the telephone exchanges create a continuous wire circuit between the two telephones, for as long as the call lasts.

  early text messaging service (SKYPE and Whatsapp)

  use of Binary by the ancient Egyptians

  early analog telephone network.

  creation of the analytical engine by Charles Babbage

 5. Complete the missing blank in the following excerpt:
In ..................., instead of being dedicated to one communication session at a 
time, network links are shared by packets from multiple competing communication sessions.

  telneting

  circuit switching

  packet switching

  internetting

 6. Having shared network links rather than dedicated sessions results in….

  increased heat and lower costs

  the loss of the quality of service

  an equal quality of service

  an improvement in the quality of service

 7. The advantage of using circuit switching is that it provides for …………………. associated with packets, making maximal use of available bandwidth for that communication

  slow and steady transfer without the speed

  limited transfer with overheads

  super fast transfer with shared links and cables

  continuous transfer without the overhead

 8. In circuit switching, a route and its associated bandwidth is reserved from source to destination, making circuit switching relatively ……

   inefficient since capacity is reserved whether or not the connection is in continuous use

  efficient since capacity is never reserved even if the connection is not in use

  inefficient as it far slower and provides low quality service

  None of the above

 9. Fill in the blanks for the following excerpt on packet switching
"In contrast, packet switching is the process of segmenting data to be transmitted into 
several smaller packets. Each packet is labeled with its .............................
........................ related packets, precluding the need for a dedicated path to
help the packet find its way to its destination. 
Each packet is dispatched independently and each may be routed via a different path"

  destination and a sequence number for ordering

  IP address and MAC

  circuit and cable

  MAC and sequence number for routing

 10. The use of packet switching today. Read the excerpt and fill in the blanks.
The best-known use of packet switching is the Internet and most local area networks. 
The Internet is implemented by the Internet Protocol Suite using a variety of Link Layer 
technologies. 
For example, Ethernet and Frame Relay are common. Newer mobile phone technologies 
(e.g., .................., i-mode) also use packet switching.

  WHATSAPP

  WI-FI

  MUSIC STREAMING

  GPRS