CS-601

CS-601- Grand Quizzes

Name:            Imran Siddique 
Contact No:  +92-3134318149
Student ID:   MC200200757@vu.edu.pk

Today dated 01-07-2020 so for five grand quizzes are submitted from different students.

·        8B/10B is a block coding method.

·        A frequency is called infinite frequency if sine wave does not change with time.

·        A frequency is called zero frequency if sine wave does not change with time.

·        A local telephone network use line switched Network.

·        A network can be categorized into different categories on the basis of All of the Given: Size, Geographical Area and Ownership.

·        A network geographically spread over a country with interconnected devices, such as Routers and Modems. This type of network comes under the WAN category.

·        A sine wave is defined by 5 characteristics.

·        A telephone line analogue signal has got the bandwidth of 4 KHz.

·        A twisted pair cable consist of Two conductors.

·        A virtual circuit network is a cross between a Circuit Switch network and a datagram network.

·        According to the Fourier analysis, frequencies obtained after decomposition of digital signals are Continuous.

·        All the application layer, object / information is in the form of Packet.

·        Among the following cables given below Fiber Optical cable has the highest cost as compared to others.

·        Among the following cables given below Fiber Optical cable provides highest bandwidth and less attenuation.

·        Among the following cables given below, Fiber Optical cable provides highest and less attenuation.

·        Amplitude shift keying is normally implemented using 2 levels.

·        Analogue signal can take infinite levels of intensity over time.

·        Asynchronous is a type of serial transmission in which timing of signal is unimportant as information received is agreed upon certain agreements between sender and receiver.

·        Attenuation means loss of energy in signal.

·        Bandwidth is measuring in Bps.

·        Class A Network is used for Data transmission where speed is priority in data transfer.

·        Communication between two users is a cellular (Mobile) network is an example of Full Duplex communication.

·        Composite wave can be used to send Telephone Talk.

·        Data format used at Data Link Layer of TCP/IP protocol sit is called Packet

·        Data link layer is responsible for creating datagram.

·        Data rate is sometimes called the bit rate.

·        Datagram approach and virtual circuit approach are two popular approaches which lead us to circuit switching.

·        Datagram switching is done on Data Link Layer.

·        Digital signal can take infinite levels of intensity over time.

·        Electromagnetic waves ranging in frequencies between 1z and 300 GHz are called infrared waves.

·        Entire band in United States is regulated by FCC authorities.

·        Error detection and correction is done at the data link layer.

·        Five Stations will have Ten full duplexed dedicated links among them to be connected in a Mesh topology.

·        FSK stands for Frequency Shift Keying.

·        Guard bands are used in FDM multiplexing technique, to avoid overlapping of a frequency bands assigned to each user.

·        If a digital signal has four levels, then we need 2 bits to represent each level.

·        In amplitude shift keying Frequency and Phase remain(s) constant.

·        In analogue transmission of digital data the required bandwidth is always proportional to the signal rate except in FSK a digital to analogue conversion technique.

·        In analogue transmission of digital data, the bandwidth is always proportional to the signal rate except in FSK, a digital to analogue conversion technique.

·        In ASK correct formula for calculating the bandwidth in as B-(1+d)S.

·        In baseband transmission, a digital signal is transmitted as digital signal.

·        In circuit switched networks we have low efficiency but minimal speed.

·        In circuit switching total delay is combination of connection time. Data transfer time and Switching Time.

·        In digital to analogue conversion frequency is varied.

·        In digital to Analogue conversion phase is varied.

·        In NRZ-I the signal is inverted if 0 is encountered.

·        In pulse code modulation the term sampling can also be referred as Pulse sample modulation.

·        In searching coding scheme, the number of pulses replacing the bits will be equal to pulses.

·        In statistical time division multiplexing number of slots in frame as less than input lines.

·        In TCP/IP protocol suite, the process of adding header at each layer on sending side is known as packetizing.

·        In the TDM based digital hierarchy used by the telephone companier. DS-0 is single digital channel of 1.544 Mbps.

·        In transmission impairments impulse noise occurs from the random motion of electrons in wire.

·        In transmission impairments Induced noise occurs from other sources like motors and appliances etc.

·        In Asynchronous TDM each input connection has an allotment in the output even if it is not sending data.

·        In Polar scheme the voltage are on both sides of the time axis and voltage level for 0 can be positive and the voltage level for 1 can be negative.

·        In synchronous data moves faster and timing errors are less frequent because the transmitter and receiver time is synced.

·        In unipolar scheme, all the signal levels are on one side of the time axis, either above or below.

·        Internet standard can be published using request for comments (RFCs)

·        Isochronous mode of serial transmission quantities fixed rate data.

·        LAN stands for Local Area Network.

·        Latency is made of two components.

·        Low pass channel has dedicated bandwidth between two stations.

·        Low pass channel with Multiplexed bandwidth is not real and is used for theoretical modeling.

·        Low pass channel with Narrow bandwidth is not real and is used for theoretical modeling.

·        Manchester encoding scheme uses an inversion at the Middle of each bit.

·        Microwaves are used for multicast communications, such as radio and television.

·        Modularity is not advantage of protocol layering.

·        Most commonly used connector for twisted pair cable is RJ-45.

·        Mr. Asif while sitting in Lahore is talking with his friend in Dubai through skype is an example of Wide Area Network.

·        Multimode technology has three main types for light propagating.

·        N(N+1) is correct formula to determine the total number of ports needed for one system connected in a mesh network.

·        NRZ-l the signal is inverted if 1 is encountered.

·        On optical fiber a glass core is surrounded by a Cladding.

·        OSI Model protocol suite consists of 7 layers.

·        Packet or Packets are referred as datagram.

·        Packet switching operates on Network Layer.

·        Parabolic antenna is used for Infrared waves communication.

·        Polar encoding scheme uses 1 voltage level.

·        PSK is Less susceptible to noise as compared to ASK.

·        Pulse rate relatively measures the strength of two signals.

·        QAM is the process of converting binary data to digital signal.

·        QPSK stands for Quadrature Phase Shift Key.

·        Quadrature Amplitude Modulation (QAM) is the combination of ASK and PSK.

·        RG-58 category of coaxial cable is used for thin Ethernet.

·        RG-59 category of coaxial cable is used for thick Ethernet.

·        RJ-11 category of coaxial cable is used for cable TV.

·        Routing is the function of network layer.

·        Serial data transmission is normally used where speed is priority in data transfer.

·        Signal, which has a certain amplitude, frequency and phase but contains no information is called as an original signal.

·        Signals travel through fiber optic cable are in the form of light.

·        Simple sine wave can be used to send Amplitude

·        Switch is a network device which operates on the Data Link layer of the TCP/IP protocol.

·        Switch is not an example of a connecting device.

·        Taking the header from the message is called Layering.

·        TCP/IP protocol suite consists of 5 layers.

·        TCP/IP protocol suite is being used by the modern internet communication.

·        Television broadcast where use can only view the information sent in the form of video is an example of None of given communication.

·        The communication at the Application, Transport and Network layer is Rational.

·        The fiber optic cable transmit signal in the form of light.

·        The logical connection between the peer layers is tangible connection.

·        The logical connection between the peer layers is physical connection.

·        The most common type of connector used by coaxial cable is BNC.

·        The NRZ-I the signal is inverted if 1 is encountered.

·        The pulse code modulation (PCM), the sampling is dependent on single rate.

·        There are 3 basic categories of multiplexing.

·        There is layer to layer communication between every peer station. This imaginary connection between each layer is termed as logical connection.

·        To calculate the data rate for noisy channel Shannon formula is used.

·        To improve the performance of line coding Block Coding was introduced.

·        Token ring was divided by IBM.

·        Twisted pair cable is used in wavelength division multiplexing.

·        Two PCs and one printer are connected in a network within a room; it is an example of LAN.

·        VCI address is global address in virtual circuit approach.

·        Virtual Circuit identifier is the Size of packet.

·        Wavelength binds the period or the frequency of a simple sine wave to the propagation speed of the medium.

·        WDM stands for Wavelength Division Multiplexing.

·        We can have 8 different groups with a 4 bit block.

·        We can have combination of 32 possible codes with a 5-bit code.

·        When an antenna transmits radio waves. They are propagated in all directions.

·        When data is sent or received using Both parallel and serial transmission the data bits are organized in a specific order, since they can only be sent or received one after another.

·        When data is sent using serial data transmission, data bits are transmitted one after another over single channel at the same time.

·        When data sent using parallel data transmission, multiple data bits are transmitted over multiple channels at the same time.

·        Which is the following is not a characteristic of sine wave? Segmentation

·        Which of the following is not a characteristics of s sine wave? Amplitude

·        Which one of following is a scrambling coding technique? B8SZ

·        Which one of the following is not a bipolar encoding level? One

·        Which one of the following is not a sampling technique? Netural Sampling

·        Wireless transmission can be divided into Four broad groups.

·        Wiring used for transmission modes depends upon latency.

·        BitRate = 3*Bandwidth*log2 L   Is the NY Quist bit rate formula for noiseless channel

·         If a digital signal has “L” number of levels. Log(2*L)    Is the number of bits required to represent each level.