Exam Questions (Multiple Choice Questions Sample)

Question 1.1. (TCO A) The transmission bandwidth in which a communication signal operates directly relates to the __________ that can be obtained with that medium. (Points : 5)
       PRIVATE "" MACROBUTTON HTMLDirect  mobility       PRIVATE "" MACROBUTTON HTMLDirect  data transmission rate       PRIVATE "" MACROBUTTON HTMLDirect  error rate       PRIVATE "" MACROBUTTON HTMLDirect  repeater spacing       PRIVATE "" MACROBUTTON HTMLDirect  All of the above

Question 2.2. (TCO B) In a telephone system, the first point of access to the public switched network is the _________________. (Points : 5)
       PRIVATE "" MACROBUTTON HTMLDirect  PBX       PRIVATE "" MACROBUTTON HTMLDirect  tandem network       PRIVATE "" MACROBUTTON HTMLDirect  local exchange        PRIVATE "" MACROBUTTON HTMLDirect  toll switch       PRIVATE "" MACROBUTTON HTMLDirect  None of the above

Question 3.3. (TCO C) _______________ are used to separate broadcast domains in a network. (Points : 5)
       PRIVATE "" MACROBUTTON HTMLDirect  Hubs       PRIVATE "" MACROBUTTON HTMLDirect  Switches       PRIVATE "" MACROBUTTON HTMLDirect  Bridges       PRIVATE "" MACROBUTTON HTMLDirect  Routers       PRIVATE "" MACROBUTTON HTMLDirect  None of the above

Question 4.4. (TCO E) 4G technology will not support ________. (Points : 5)
       PRIVATE "" MACROBUTTON HTMLDirect  at least 100 Mbps peak data rates in full mobility wide area coverage       PRIVATE "" MACROBUTTON HTMLDirect  symmetrical and asymmetrical services       PRIVATE "" MACROBUTTON HTMLDirect  10 Gbps in low-mobility local area coverage       PRIVATE "" MACROBUTTON HTMLDirect  streaming audio and video       PRIVATE "" MACROBUTTON HTMLDirect  4G is planned to support all of the above.

Question 5.5. (TCO G) Which of the following are measures of QoS? (Points : 5)
       PRIVATE "" MACROBUTTON HTMLDirect  A. Transit delay       PRIVATE "" MACROBUTTON HTMLDirect  B. Traffic delay       PRIVATE "" MACROBUTTON HTMLDirect  C. Network bandwidth       PRIVATE "" MACROBUTTON HTMLDirect  A and C only       PRIVATE "" MACROBUTTON HTMLDirect  All of the above

Question 6.6. (TCO A) Identify the difference between a circuit-switched network and a packet-switched network. What is the primary difference between lines and trunks? In your answer, explain both the engineering difference and usage difference (i.e. where is one used instead of the other). Additionally, define what features (if any) are different between these two sets of telecommunication facilities. (Points : 30)
Circuit switched network are used for phone calls where they require a specified point to point connection during the call. Packet switched network transit data in different packets according to their destination address. The advanced switched networks the signals go over many switches for a connection to be established. At this time there is no other network that can access the switches. The packet based network has the message being broken down in tiny data packets transmitted to the fastest route when the circuit is available. On the other hand the main difference between a truck and a line is that a trunk connects various circuits through an analogue connection using a multiplexer while a line connects circuits on wireless. Formerly packet switched network was used to connect to computers and access them in different locations, but now it is done over the internet through the internet service providers.
Question 7.7. (TCO B)  What are some of the differentiators between the PSTN and the IP network (besides the obvious, that one is IP and the other isn't)? Explain architectural and functional differences between them. In what environment is one more suited than the other for the telecommunications infrastructure? (Points : 30)
The IP telephony is built on the telephone platform and the internet. Whereas the Public Switched Telephone Network is built by microwave transmission lines, fiber optic cables, undersea telephone cables, communication satellites cellular networks and telephone lines. The IP telephony accesses the internet to transmit data as small packets on shared lines from one point to the other. On the other hand, the PSTN is accessed on a specified switching center that connects all the devises allowing communication. The IP telephony markets itself to be free in making calls whereas the PSTN requires dedicated calls where they are charge per minute. Therefore, IP telephony is appropriate on a digital platform that does not choose the device used compared to PSTN where it requires a dedicated line.
1. (TCO C) When reviewing the intent of the OSI model, what problem did it solve for the telecommunications and networking industries in devices communicating with each other? Look at the origins that it was addressing and how it solved the problem and the benefit it has subsequently provided. How was this problem solved? What impact did it have on the above industries? Specifically, what development did it precipitate? 
The Open System Interconnection (OSI) model solved management and security issues on communication ...