Q1: Choose the correct answer of the following 1) The channel from the mobile user to a base station is called the a) Satellite channel b) forward channel 2) Paging systems are a) simplex 3) the internet service used in 4G a) Narroy band ------------ communication b) Half duplex need all answer best wishes b) Broadband c) reverse channel c) Full duplex c) Ultra-Broadband d) FM channel d) All correct d) no Yate
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- Statement is true/false with explanation. 1. When we send any signal over wireless channel for long distance, the signal doesn't loss any power 2. When the signal sent over a channel in digital formats, it means its baseband transmissionGSM refers to the international standard for mobile phone communication. What does this acronym's complete meaning entail? The SIM card is a small piece of technology that enables the correct operation of your mobile phone.6. Which transmission mode should be used to send information from a single point to another point?
- Winter 2014 final 1 Which of the following technology allows multiple calls transmitting at the same time and over the same frequency band. A) AM B) FM C) FDMA D) TDMA E) CDMA55. Select the correct statement about broadband and baseband. a. Baseband refers to local area networks, and broadband refers to wide area networks. b. Baseband operates at a standard bit rate, whereas broadband may operate at different rates as needed c. Baseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable d. Broadband networks carry several channels on a single cable, whereas in a baseband network several cables carry one channelWhich statement is true about Symmetric (single-line) digital subscriber line (SDSL) a. A technology based on DSL; allows different data rates depending on the type of communication; differing rates may also assigned tosubcribers based on their demand on bandwidth b. A communication technology in which the downloadstream data rate is higher than theupstream rate c. Same as HDSL but one uses single pair twisted cable, available to mostresidential subscriber to achieve the same data rate as HDSL d. Design byTelcordia as an alternative to the T-1 line
- Bandwidth efficiency is the ratio of the minimum bandwidth required to the transmission bit rate for a particular modulation scheme. Select the correct response: True FalseQ9: Match the following with the correct answer. 1 RS232 Character framing 2 3 4 5 6 7 DTR RS232 DTR and DSR Asynchronous transmission Dead area Stop Bit 1 2 3 4 5 6 7 It is widely used for character-oriented transmissions Data transfer can start at any given time and it is the task of the receiver to detect when a message starts and ends It is designed to absorb line noise between +3V and -3V. It is the process of placing a character between start and stop bits. It allows the instrument and computer to re-synchronize It is asserted by DTE to indicate that it is ready to be connected They are used to control the receiver presenceWhich statement is correct a. Multiplexing uses a single channel and multiple pathsb. Multiplexing uses a single channel and single pathc. Multiplexing uses multiple channels and multiple pathsd. Multiplexing uses multiple channels and a single path
- Two channels, one with a bit rate of 100 kbps and another with a bit rate of 200 kbps, are to be multiplexed: a) How this can be achieved? b) What is the frame duration? e What is the frame rate? What is the bit rate of the link? And Please be clear, couldn't understand a bit from the last two answered4- is the obtained data unit when decapsulates the frame. b. Bit c. User datagram d. Segment e. Datagram a. Message 5- In a ............networks, end systems. 6- a. reliable a dedicated connection is always available between the two b. circuit-switched c. packet-switched d. secure ............ cable can support highest bandwidth and greater transmission distance than any other guided media. a. UTP b. STP c. Coaxial d. Fiber-opticm Notes: 1) Answer All Questions, 2) Fill all blanks in what you find suitable. lo tiu geizalqulum adTugto for wireless transmission. ai notnub tid uqui adTid 1- One of the benefits of using modulation is to (A- Increase the antenna dimensions, B- decrease the data rate, C- Reduce the antenna dimensions, D- Increase the transmission range). 2- The range of frequencies that can be transmitted over a channel with a reasonable fidelity is called (A- Guard Band, B- Bandwidth, C-noise, D- Data) GHz in free 3- For a signal of 15 cm wavelength (2.), the frequency (f) is ------- space. (note: c= f, and c= 3 x 10% meters/sec). 4- If we know that the maximum throughput that can be supported by a channel is -sec. 900 Mb/s. Then the time we need to send a file with size 4.5 GB is File Size (Note: Time (sec) = Data Rate (or Throughput) 5- Sketch the output baseband signals for the following data stream (01011011) using the line-coding techniques depicted in the figure below: Bipolar NRZ Unipolar…