Computer Science - 0478 CIE

Types And Methods Of Data Transmission

Muhtasari

Every photo you send, every page you load and every message you receive is far too big to push down a wire in one go. So your device chops the file into tiny labelled parcels called packets, fires them across the network by whatever route is free, and the receiving device snaps them back into order. Understanding that journey is the heart of this topic.

In this lesson you will learn the three parts of a packet and what each one carries, how packet switching moves parcels through a network, the difference between serial and parallel transmission and between simplex, half-duplex and full-duplex, and how the USB interface uses a high-speed serial connection to link your devices. By the end you should be able to pick the right method for a given scenario and justify it like an examiner.

Malengo

  1. 1 (a) Understand that data is broken down into packets to be transmitted (b) Describe the structure of a packet (c) Describe the process of packet switching
  2. 2 (a) Describe how data is transmitted from one device to another using different methods of data transmission (b) Explain the suitability of each method of data transmission, for a given scenario
  3. 3 Understand the universal serial bus (USB) interface and explain how it is used to transmit data

Maelezo ya Somo

Networks would collapse if every device tried to send a whole file in one unbroken stream: the wires and radio links simply cannot carry that much at once. Breaking data into packets lets many users share the same network at the same time, lets each packet take whichever route is free, and lets the receiver detect and re-request anything that arrives damaged. Exam questions on this topic reward precise description, so it pays to know exactly what a packet header carries and exactly how each transmission method behaves.

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Tathmini ya Somo

Hongera kwa kukamilisha somo la Types And Methods Of Data Transmission. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.

Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.

Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.

  1. Which section of a packet contains the destination address and packet number? A. payload B. trailer C. header D. checksum Answer: C
  2. Which statement about serial transmission is correct? A. it sends many bits at once down many wires B. it sends one bit at a time down a single wire C. it is always faster than parallel D. it cannot be used over long distances Answer: B
  3. A walkie-talkie lets two people talk, but only one at a time. This is an example of: A. simplex B. half-duplex C. full-duplex D. parallel Answer: B
  4. In packet switching, which device decides the route each packet takes? A. the payload B. a router C. the trailer D. a sensor Answer: B
  5. A USB connection transmits data using: A. parallel transmission B. simplex only C. serial transmission D. no transmission method Answer: C

Inapatikana kwenye programu ya Green Bridge

Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.

Maelezo kamili ya masomo yenye michoro
Msaidizi wa kujifunza wa AI
Soma bila mtandao, wakati wowote, mahali popote
Inapatikana kwa Android, Windows, macOS, na Linux

Inapatikana kwenye programu ya Green Bridge

Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.

Maelezo kamili ya masomo yenye michoro
Msaidizi wa kujifunza wa AI
Soma bila mtandao, wakati wowote, mahali popote
Inapatikana kwa Android, Windows, macOS, na Linux

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