HSC ICT Chapter 2 important MCQ solutions including board questions from 2023, 2019, 2018, 2017 and 2016. I hope that understanding and solving these questions will provide you with good preparation.
What is data communication?
[Dha. B. 2016]
a) Exchange of information between two devices
b) Flow of information without a medium
c) Flow of information only over a wire
d) Communication only via a computer
What are the basic/fundamental elements of data communication?
a) 3
b) 4
c) 5
d) 6
Basic elements of data communication includes-
i. Source
ii. Data
iii. Destination
Which one is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
There are 5 basic elements of data communication.
1. Source: Camera, microphone, computer keyboard, etc.
2. Transmitter: Modem, router, TV center, radio center, telephone and mobile phone, etc.
3. Medium: Wired medium (coaxial cable, twisted pair cable, fiber optic cable, telephone line) and wireless medium (radio web, microwave, infrared).
4. Receiver: Modem, router, telephone exchanger, etc.
5. Destination: Loud speaker, telephone, computer, etc.
What is bandwidth?
[Ma. Bo. 2016]
a) Mode of data flow
b) Medium of data flow
c) Rate of data flow
d) Direction of data flow
The rate of data transfer is called-
[J. Bo. 2017]
a) Band meter
b) Bandwidth
c) Data transmission
d) Data connection
Other names for bandwidth are-
[Cu. Board 2023]
i. Data transmission speed
ii. Band speed
iii. Mobile speed
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
What is the bandwidth if 8100 bits are transferred in 9 seconds through a channel?
a) 600 bps
b) 900 bps
c) 2700 bps
d) 2700 bps
- The amount of data transferred per second is also called bandwidth.
- If 8100 bits are transferred in 9 seconds, then (8100/9)=900 bits will be transferred in 1 second.
What is the bandwidth if 9000 bits are transferred in 5 seconds through a channel?
[M. Board 2023, C. Board 2023]
a) 1800 gbps
b) 1800 mbps
c) 1800 kbps
d) 1800 bps
If 9000 bits are transferred in 5 seconds through a channel, which band does it indicate?
a) Narrow band
b) Voice band
c) Broad band
d) Ultra band
What is the bandwidth if a maximum of 8100 kilobits can be transferred in 2 minutes through a channel?
a) 67 bps
b) 4050 kbps
c) 67500 bps
d) 67500 kbps
What is the smallest unit of data transmission speed?
a) bps
b) Kbps
c) Mbps
d) Gbps
1 byte(B) = 8 bits(b)
1 kilobyte(KB) = 1024 bytes(B)
1 megabyte(MB) = 1024 kilobytes(KB)
1 gigabyte(GB) = 1024 megabytes(MB)
1 terabyte(TB) = 1024 gigabytes(GB)
What is the bandwidth of broadband?
[Cu. Bo. 2016]
a) 1 Mbps or more
b) 9600 bps
c) 45-300 bps
d) Less than 45 bps
Data transmission speeds can be divided into three categories.
1. Narrow Band
Speed range (45-300bps) used in telegraphy
2. Voice Band
Speed range (1200-9600bps) used in telephone
3. Broad Band
Speed range (1Mbps+) used in satellite
What is the minimum speed of narrow band in bps?
[Dha. Bo. 2016]
a) 35
b) 45
c) 200
d) 300
What is the maximum speed of narrow band?
[C. B. 2019]
a) 300 bps
b) 6900 bps
c) 9600 bps
d) 1 mbps
What is the full form of bps?
[J. Board 2017, Q. Board 2023]
a) bit per second
b) byte per second
c) binary per second
d) bit per system
bps – bit per second: one bit per second
kbps – kilobit per second: one thousand bits per second
Mbps – megabit per second: one million bits per second
Gbps – gigabit per second: one billion bits per second
What is the maximum data transfer speed in the voice band?
[Ra. Bo. 2016]
a) 6900 bps
b) 6900 kbps
c) 9600 bps
d) 9600 kbps
Where is voice band used?
[Cu. Bo. 2019]
a) In telegraph
b) Telephone
c) In router
d) Gateway
Data is transferred from the computer to the printer in-
[Jess. B. 2019]
a) Narrow band
b) Voice band
d) Half-duplex
d) Full-duplex
What is the technology for sending text and images?
[Cu. Board 2023]
a) Fax
b) SMS
d) MMS
d) Telegraph
What is the bandwidth required for phone calls (VoIP)?
[Di. Board 2023]
a) 0.5 Mbps
b) 1 Mbps
d) 1.5 Mbps
d) 4 Mbps
How many types of data transmission methods are there?
a) 2
b) 3
c) 4
d) 5
How many types of data transmission are there based on line interface?
a) 2
b) 3
c) 4
d) 5
Characteristics of Parallel Transmission-
i. In parallel, one bit is transmitted at a time
ii. The number of lines/links/channels is 8 or a multiple of 8
iii. Suitable for data transfer over long distances
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
Bit synchronization is-
[Dha. Bo. 2016]
i. Integrated method of sending bits
ii. Understanding the beginning and end of the bit
iii. Increasing the amount of bandwidth
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
How many methods can data transmission be divided into based on synchronization?
a) 2
b) 3
c) 4
d) 5
Data transmission methods are-
i. Asynchronous
ii. Synchronous
iii. Isochronous
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
In which data transmission method, data is transmitted with a start bit at the beginning of each character and a stop bit at the end?
a) Asynchronous
b) Synchronous
c) Isochronous
d) Simplex
In which transmission is data transmitted character by character?
[Raj. Board 2023]
a) Parallel
b) Asynchronous
c) Synchronous
d) Isochronous
The disadvantages of synchronous data transmission are-
i. Requires primary storage device
ii. Slow data transmission speed
iii. Relatively expensive
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
The data transmission delay is least in –
[Jess. Bo. 2019]
a) Asynchronous
b) Isochronous
c) Broadcast
d) Unicast
The advantages of asynchronous transmission-
[Ba. Bo. 2017]
a) No need for primary storage device
b) High data transmission speed
c) Data is transmitted in block form
d) More suitable for use in satellites
Characteristics of asynchronous transmission-
i. Data is transferred in the form of characters
ii. Start and stop bits are used
iii. 10 bits are transferred each time
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
The characteristics of the transmission used while transferring data from keyboard to CPU are-
[Ctg. Bo. 2019]
i. Data is transferred in the form of blocks
ii. Can send and receive data at any time
iii. Does not require primary storage device
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
Data is transmitted in the form of packets or blocks or frames in-
i. Asynchronous
ii. Synchronous
iii. Isochronous
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
Which method of data transfer is used in real-time applications?
a) Asynchronous
b) Synchronous
c) Isochronous
d) Synchronization
Which method is used for live TV broadcasting or video streaming?
a) Asynchronous
b) Synchronous
c) Isochronous
d) Synchronization
Which method can be used to teach students directly in live classes?
[Raj. Board 2023]
a) WebEx
b) Google
c) Facebook
d) Yahoo
What is the direction of data flow in data transmission?
a) Data transmission method
b) Data transmission mode
c) Data transmission speed
d) None
How many types of data transmission modes are there?
[Ma. Bo. 2017]
a) 2
b) 3
c) 4
d) 5
What type of data communication mode is radio and television broadcasting?
a) Simplex and unicast
b) Full duplex and multicast
c) Half duplex and multicast
d) Simplex and broadcast
Which mode is called when data is transferred through both at the same time?
[Di. Bo. 2019, Jess. Bo. 2017]
a) Simplex
b) Half-duplex
c) Multicast
d) Full-duplex
Which mode transmits data in both directions but not at the same time?
a) Simplex
b) Half-duplex
c) Multicast
d) Full-duplex
What is the data transmission mode between a computer and a multimedia projector?
[Raj. Bo. 2017]
a) Simplex
b) Half-duplex
c) Full-duplex
d) Multicast
What type of data transmission mode is used in mobile phones?
a) Simplex
b) Half-duplex
c) Full-duplex
d) Broadcast
Operates in full-duplex mode-
[Ctg. Bo. 2017]
i. Mobile phone
ii. Land phone
iii. Radio broadcast
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
Which mode works for two people talking on a mobile phone?
[Ma. Bo. 2016]
a) Simplex
b) Half-duplex
c) Multicast
d) Full-duplex
Data delivery or distribution modes can be further divided into three categories based on the number of recipients and the right to receive data. Namely-
- Unicast
- Multicast
- Broadcast
Group SMS is provided by-
[Sly. Bo. 2017]
a) Unicast
b) Multicast
c) Broadcast
d) Telecast
Examples of broadcast mode are-
[Ba. Board. 2017]
a) TV broadcasting
b) Video conferencing
c) Telephone conversation
d) Sending SMS
The following figure could be-
[Raj. Board 2023]
i. Broadcast
ii. Multicast
iii. Simplex
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
Which medium is most commonly used in broadcasting?
[Ch. Board 2023]
a) Optical fiber
b) Radio wave
c) Microwave
d) Twisted pair cable
What is the mode of group SMS?
Ba. Board 2023]
a) Full Duplex
b) Unicast
c) Broadcast
d) Multicast
Multiple recipients can receive data in –
i. Unicast
ii. Multicast
iii. Broadcast
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
The types of transmission that occur when exchanging information from computer to computer are-
[all. Board. 2018]
i. Synchronous
ii. Narrowband
iii. Full-duplex
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
The data transmission mode of television is-
[Sly. Bo. 2019]
i. Simplex
ii. Multicast
iii. Broadcast
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
Which connects the sender and receiver in a data communication system?
a) Source
b) Medium
c) Destination
d) Channel
Data communication medium is-
[Sly. Board. 2019]
i. Twisted pair cable
ii. Radio wave
iii. Modem
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
Wire or cable or guided media is-
i. Twisted pair cable
ii. Coaxial cable
iii. Fiber optic cable
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
The wires are twisted in pairs, the cable is called-
[Dha. Bo. 2019]
a) Telephone cable
b) Coaxial cable
c) Twisted pair cable
d) Fiber optic cable
What is the common color in twisted pair cable?
[Raj. Bo. 2016, Ma. Bo. 2018]
a) Orange
b) Green
c) Red
d) White
What type of cable is commonly used in LANs in educational institutions?
[Cu. Board 2023]
a) Twisted Pair
b) Coaxial
c) Thicknet
d) Optic Fiber
The characteristics of twisted pair cable are-
i. No transmission loss
ii. Easy to install
iii. Can transmit both analog and digital data
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
Coaxial cable divided into how many types?
[all. Board. 2018]
a) two
b) three
c) four
d) five
Which of the following cables has the highest data transfer rate?
[Ma. Bo. 2017]
a) Shielded twisted pair cable
b) Un-shielded twisted pair cable
c) Coaxial cable
d) Fiber optic cable
What is the typical data transmission rate of a coaxial cable?
a) 10 Mbps
b) 200 Mbps
c) 2 Gbps
d) 40 Gbps
What is the innermost part of an optical fiber?
[Ma. Bo. 2016]
a) Buffer
b) Core
c) Jacket
d) Cladding
Which cable is used to connect to the intercontinental network?
a) Telephone cable
b) Coaxial cable
c) Twisted pair cable
d) Fiber optic cable
What is the diameter of the core of a single mode fiber in microns?
[Di. Board 2023]
a) 1-4
b) 4-8
c) 8-12
d) 12-16
The diameter of an optical fiber is 150 microns.
The core diameter is 8-100 microns.
The diameter of a single mode fiber is 8-12 microns.
The diameter of a multimode fiber is 50-100 microns.
Fiber optic cable –
i. Transfers data at the speed of light
ii. Made of glass or transparent plastic
iii. Free from electromagnetic interference (EMI)
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
The advantages of optical fiber cable are-
[Ma. Bo. 2016]
i. It can transfer data quickly
ii. It is easier to maintain
iii. It is free from electromagnetic effects
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
Which phenomenon allows light rays to transmit data faster in fiber optic cables?
a) Refraction
b) Reflection
c) Total internal refraction
d) Total internal reflection
Which wavelength is used in fiber optic cable?
[Ba. Board 2023]
a) 500 nm
b) 1000nm
c) 1500nm
d) 2000nm
- Fiber optic communication is possible at wavelengths of 1300nm and 1500nm.
- However, the 1500nm wavelength technology is exclusively used for long-distance communication.
Which is the most suitable medium for establishing a network connection between Bangladesh and America?
a) UTP cable
b) STP cable
c) Coaxial cable
d) Fiber optic cable
What is the name given to the phenomenon where the signal from one of two parallel copper wires affects the signal from the other?
a) Crosstalk
b) Crossreference
c) Crossconnection
d) Crossed
Wireless or unguided media are-
i. Radio waves
ii. Microwaves
iii. Infrared waves
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
The electromagnetic spectrum with frequencies from 3KHz to 300GHz is called –
a) Radio waves
b) Microwaves
c) Infrared waves
d) Ultra-violet waves
The electromagnetic spectrum with frequencies from 300MHz to 300GHz is called –
a) Radio waves
b) Microwaves
c) Infrared waves
d) Ultra-violet waves
The electromagnetic spectrum with frequencies from 300GHz to 400THz is called –
a) Radio waves
b) Microwaves
c) Infrared waves
d) Ultra-violet waves
Which of the following is used for communication between towers in a mobile phone network?
a) Radio waves
b) Microwaves
c) Infrared waves
d) Ultra-violet waves
Which is used for communication between towers and mobile phones in mobile phone networks?
a) Radio waves
b) Microwaves
c) Infrared waves
d) Ultra-violet waves
Can cross any obstacle including buildings, mountains and hills-
[Raj. Board 2023]
i. Radio wave
ii. Terrestrial microwave
iii. Satellite microwave
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
Which technology is needed to overcome the disadvantages of microwave technology?
[Raj. Board 2019]
a) Infrared
b) GPS
c) Radio Wave
d) Artificial Satellite
At what altitude from the ground should a GEO satellite be placed in a specific orbit?
[Cu. Bo. 2019]
a) 12000 Km
b) 22000 Km
c) 27000 Km
d) 36000 Km
Television remote control uses-
[Jess. Board 2019]
a) Infrared wave
b) Radio wave
c) Microwave
d) Bluetooth
What is a hotspot?
[Raj. Board 2016]
a) Special security measures
b) Wired internet system
c) Wireless internet system
d) Special types of software
What is the full form of WiMAX?
A) Worldwide Interoperability for Micro Access
B) Wide Interoperability for Microwave Access
c) Worldwide International for Microwave Access
D) Worldwide Interoperability for Microwave Access
Which is more convenient for establishing an effective network in a cost-effective manner in a mountainous area?
[Ba. Board 2017]
a) Optical fiber
b) Radio wave
c) WiFi
d) WiMAX
What is the IEEE standard for WiMAX?
[Dha. Board 2019]
a) 802.11
b) 802.11a
c) 802.15
d) 802.16
Which of the following networks can be created using WiMAX technology?
a) WPAN
b) WLAN
c) WMAN
d) WWAN
What is the full form of Wi-Fi?
a) Wireless Fidelity
b) Would wide Fidelity
c) World wave Fidelity
d) Wide area Fidelity
What is the IEEE standard for Wi-Fi?
[Sly. B. 2016, Raj. B. 2017]
a) 802.11
b) 802.11a
c) 802.15
d) 802.16
Which network can be created using IEEE 802.11 technology?
[Sly. B. 2019]
a) PAN
b) LAN
c) MAN
d) WAN
Which of the following networks can be created using Wi-Fi technology?
[Di. Board 2023]
a) WPAN
b) WLAN
c) WMAN
d) WWAN
What is the IEEE standard for Bluetooth?
[Di. B. 2019]
a) 802.11
b) 802.11a
c) 802.15
d) 802.16
What is the frequency of Bluetooth?
[Dha. Board 2023]
a) 2.45 KHz
b) 2.45 MHz
c) 2.45 GHz
d) 2.45 THz
How many slave nodes can there be in a piconet?
[Ma. Bo. 2019]
a) 7
b) 8
c) 9
d) 10
- Bluetooth networks are called piconet.
- A maximum of 8 devices can exchange signals within a piconet.
- A piconet consists of 1 master device and 7 slave devices.
- Multiple piconets form a scatternet.
Piconet is related to which?
[Ba. Board 2023]
a) Infrared
b) Bluetooth
c) WiFi
d) WiMAX
The network created through Bluetooth is called-
[Jess. Board 2017]
a) WPAN
b) WLAN
c) WMAN
d) WAN
The difference between Wi-Fi and WiMAX is-
[Ba. Bo. 2016]
i. Coverage area
ii. Transmission mode
iii. Transmission speed
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
Which technology mobile phone is called green phone?
[Raj. Bo. 2019]
a) FDMA
b) TDMA
c) CDMA
d) PDMA
In which generation of mobile phones was radio signal first used in digital mode?
[Ba. B. 2019]
a) 1st
b) 2nd
c) 3rd
d) 4th
Which generation of mobile phones was the first to launch internet service?
[Ba. B. 2016]
a) First
b) Second
c) Third
d) Fourth
- Pre-paid mode, SMS, MMS and internet services, international roaming system were introduced in 2nd generation mobile phones.
- Circuit switching data transmission was introduced.
The 2nd generation mobile phone standards are:
- GSM (Global System for Mobile Communication)
- CDMA (Code Division Multiple Access)
What is the full form of GSM?
[Ba. B. 2017]
a) General System for Mobile Communication
b) Global Standard for Mobile Communication
c) General Standard for Mobile Communication
d) Global System for Mobile Communication
From which generation of mobile phones did MIMS come into use?
a) 1st
b) 2nd
c) 3rd
d) 4th
What is the full form of SMS?
a) Short Mail Service
b) Short Message Server
c) Short Message Service
d) Star Message Service
In which generation of mobile phones was MMS service first introduced?
[Dha. Bo. 2019]
a) First
b) Second
c) Third
d) Fourth
Which generation of mobile phones uses ultra-broadband internet?
[Jess. B. 2019]
a) 1st
b) 2nd
c) 3rd
d) 4th
What is the full form of GPRS?
[Cu. Bo. 2017]
a) General Packet Radio Service
b) Global Packet Radio Service
c) Global Package Radio Service
d) General Package Radio Service
In which generation of mobiles did video calling start?
[M. B. 2023]
a) 1st
b) 2nd
c) 3rd
d) 4th
- 3rd generation (3G) mobile phones introduced video calls, e-commerce, mobile banking FOMA etc.
- Packet switching data transmission.
4 standards were introduced in 3rd generation phones-
- HSPA(High Speed Packet Access)
- WCDMA(Wideband Code Division Multiple Access)
- 3GPP(3rd Generation Partnership Project)
- UMTS(Universal Mobile Telecommunications System)
In which generation of mobiles does data transmission take place using packet switching?
a) 1st
b) 2nd
c) 3rd
d) 4th
Which generation does EDGE technology belong to?
a) 1st
b) 2nd
c) 3rd
d) 4th
Which are the main features of the fourth generation mobile phone?
[Sly. Bo. 2017]
a) IP-based wireless network
b) Global roaming facility
c) Internet connection through the phone
d) Semiconductor and microprocessor technology
Features of 4G mobile phones-
- Works on LTE (Long Term Evolution) standard.
- Speed increases 50 times compared to 3G.
- IP(Internet Protocol) based data transmission.
- 4G technology is applied in IP telephony, gaming services, HD mobile TV, 3D TV, video conferencing etc.
The advantages of Internet Protocol-based networks instead of packet or circuit switching data transmission are-
[Ch. Board 2023]
i. Speed increases by 50 times compared to 3G
ii. Works on LTE standard
iii. It can watch 4K TV or video
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
Internet Protocol-based networks are used in which generation of mobile phones?
[Sly. Board 2023]
a) 1st
b) 2nd
c) 3rd
d) 4th
Full form of GPS –
a) Global Positioning System
b) Global Phone System
c) General Packet Service
d) General Phone System
Used to determine the exact location, speed, direction, etc. of a vehicle –
a) SPS
b) GSP
c) SSP
d) GPS
Common mobile communication is-
[Cu. Bo. 2016]
i. Wireless communication system
ii. Speech-only system
iii. Full-duplex network
Which of the following is correct?
a) i and ii b) i and iii
c) ii and iii d) i, ii and iii
নিচের উদ্দীপকটি পড় এবং ১ ও ২ নং প্রশ্নের উত্তর দাওঃ
একটি কোম্পানির দুজন নিরাপত্তা কর্মী নিজেদের মধ্যে যোগাযোগ করে কিন্তু একই সময়ে তারা কথা বলতে পারে না।
১। তারা কোন ডেটা ট্রান্সমিশন মোড ব্যবহার করেন?
[কু. বো. ২০১৬]
ক) সিমপ্লেক্স
খ) হাফ-ডুপ্লেক্স
গ) ফুল-ডুপ্লেক্স
ঘ) মাল্টিপ্লেক্স
২। একই সময়ে যোগাযোগ করার ক্ষেত্রে তাদের যে ডিভাইস প্রয়োজন-
[কু. বো. ২০১৬]
i. মোবাইল ফোন
ii. ওয়াকি-টকি
iii. টেলিফোন
নিচের কোনটি সঠিক?
ক) i ও ii খ) i ও iii
গ) ii ও iii ঘ) i, ii ও iii
নিচের উদ্দীপকটি পড় এবং ৩ ও ৪ নং প্রশ্নের উত্তর দাওঃ
MTV এর টকশোতে বিশেষজ্ঞদের একজন ঢাকার বারিধারার বাসা থেকে, একজন চট্রগ্রামের লালখান বাজার থেকে এবং অন্য একজন যুক্ত রয়েছেন বরিশাল বিশ্ববিদ্যালয় থেকে। আলোচনায় আলী রিয়াজের যুক্ত থাকার কথা থাকলেও যান্ত্রিক ত্রুটির কারণে তাকে সংযুক্ত করা যায়নি।
৩। উদ্দীপকে কোন ধরনের ট্রান্সমিশন মোড তৈরি হয়েছে?
[সকল. বো. ২০১৮]
ক) সিমপ্লেক্স
খ) ফুল-ডুপ্লেক্স
গ) মাল্টিকাস্ট
ঘ) ইউনিকাস্ট
৪। এ ধরনের আলোচনার আয়োজন করতে হলে যে বিষয়টি নিশ্চিত করতে হবে তা কী?
[সকল. বো. ২০১৮]
ক) ইন্ট্রানেট
খ) ইন্টারনেট
গ) ওয়াইফাই
ঘ) রেডিও ওয়েব
নিচের উদ্দীপকটি পড় এবং ৫ ও ৬ নং প্রশ্নের উত্তর দাওঃ
রাসেল 4G মোবাইল ফোন ব্যবহার করে তার নির্দিষ্ট কিছু বন্ধুকে একটি বার্তা প্রেরণের মাধ্যমে একটি তথ্য জানায় এবং কিছু বন্ধুকে কল দিয়ে তথ্যটি জানায়।
৫। বার্তা জানানোর মোড কোনটি?
ক) সিমপ্লেক্স
খ) ফুল-ডুপ্লেক্স
গ) মাল্টিকাস্ট
ঘ) ব্রডকাস্ট
৬। উদ্দীপকে ব্যবহৃত ডিভাইসটির মোড কোনটি?
ক) সিমপ্লেক্স
খ) ফুল-ডুপ্লেক্স
গ) মাল্টিকাস্ট
ঘ) ব্রডকাস্ট
নিচের উদ্দীপকটি পড় এবং ৭ ও ৮ নং প্রশ্নের উত্তর দাওঃ
মোহনা লক্ষ করল, তাদের এলাকার সবচেয়ে উঁচু দালানগুলোর ওপর বিভিন্ন মোবাইল কোম্পানির টাওয়ার বসানো আছে। এমনকি খোলা প্রান্তরেও অনেক দূরে দূরে টাওয়ারগুলো বসানো, যাদের মাঝখানে কোনো বাধা নেই। একটি দালানের ওপর কিছু যন্ত্রপাতিসহ একটি অ্যাণ্টেনা আকাশমুখী করে রাখা হয়েছে ।
৭। উদ্দীপকের উঁচু টাওয়ারগুলো কোন ধরনের মিডিয়া ব্যবহার করে?
[য. বো. ২০১৬]
ক) রেডিও ওয়েভ
খ) টেরিস্ট্রিয়াল মাইক্রোওয়েভ
গ) ইনফ্রারেড
ঘ) স্যাটেলাইট মাইক্রোওয়েভ
৮। উদ্দীপকের আকাশমুখী ব্যবস্থা ব্যবহার করা হয়-
[য. বো. ২০১৬]
i. টেলিভিশনে সিগন্যাল পাঠানোর ক্ষেত্রে
ii. আবহাওয়ার সর্বশেষ অবস্থা পর্যবেক্ষণে
iii. আন্তঃমহাদেশীয় টেলিফোন কলের ক্ষেত্রে
নিচের কোনটি সঠিক?
ক) i ও ii খ) i ও iii
গ) ii ও iii ঘ) i, ii ও iii
নিচের উদ্দীপকটি পড় এবং ৯ ও ১০ নং প্রশ্নের উত্তর দাওঃ
রাসেল 4G মোবাইল ফোন ব্যবহার করে তার নির্দিষ্ট কিছু বন্ধুকে SMS এর মাধ্যমে একটি বার্তা প্রেরণ করে।
৯। বার্তা জানানোর মোড কোনটি?
[সকল. বো. ২০১৮]
ক) সিমপ্লেক্স
খ) ফুল-ডুপ্লেক্স
গ) মাল্টিকাস্ট
ঘ) ব্রডকাস্ট
১০। রাসেলের মোবাইল ফোনের প্রযুক্তি দিয়ে সম্ভব-
[সকল. বো. ২০১৮]
i. সার্কিট সুইচিং পদ্ধতিতে ডেটা প্রেরণ
ii. IP নির্ভর ওয়্যারলেস নেটওয়ার্ক স্থাপন
iii. ত্রি-মাত্রিক পরিবেশে ডাটা স্থানান্তর
নিচের কোনটি সঠিক?
ক) i ও ii খ) i ও iii
গ) ii ও iii ঘ) i, ii ও iii
নিচের উদ্দীপকটি পড় এবং ১১ ও ১২ নং প্রশ্নের উত্তর দাওঃ
রায়হান সাহেব মাল্টিমিডিয়া প্রজেক্টর ব্যবহার করে ক্লাস নেন। যে সকল শিক্ষার্থীরা ক্লাসে অনুপস্থিত থাকে তাদের অভিভাবকদের SMS এর মাধ্যমে অনুপস্থিতির বিষয়টি অবহিত করা হয়।
১১। উদ্দীপকের আলোকে রায়হান সাহেবের ক্লাস নেয়ার সময় কোন ধরণের ডেটা ট্রান্সমিশন মোড ব্যবহৃত হয়েছে?
[চ. বো. ২০১৯]
ক) সিমপ্লেক্স
খ) হাফ ডুপ্লেক্স
গ) ফুল ডুপ্লেক্স
ঘ) ব্রডকাস্ট
১২। অনুপস্থিতির বিষয়টি জানানোর জন্য ব্যবহৃত ডেটা ট্রান্সমিশন মোড হলো-
[চ. বো. ২০১৯]
i. ইউনিকাস্ট
ii. মাল্টিকাস্ট
iii. ব্রডকাস্ট
নিচের কোনটি সঠিক?
ক) i ও ii খ) i ও iii
গ) ii ও iii ঘ) i, ii ও iii
নিচের উদ্দীপকটি পড় এবং ১৩ ও ১৪ নং প্রশ্নের উত্তর দাওঃ
রাজু ইন্টারনেট হতে ছবি ও ফাইল নিজের কম্পিউটারে সংরক্ষণ করে আবার মাঝে মাঝে প্রিন্টও করে।
১৩। রাজুর ফাইল সংরক্ষণে কোন প্রটোকল কাজ করে?
[য. বোর্ড ২০২৩]
ক) http
খ) ftp
গ) VoIP
ঘ) SMTP
১৪। রাজুর প্রিন্টের কাজে ট্রান্সমিশন মেথডটির বৈশিষ্ট্য-
[য. বোর্ড ২০২৩]
i. প্রেরক ও প্রাপক যেকোন সময় ডেটা প্রেরণ ও গ্রহণ করে
ii. জটিল সার্কিট ছাড়াই বাস্তবায়ন করা যায়
iii. ট্রান্সমিশন দক্ষতা বেশি
নিচের কোনটি সঠিক?
ক) i ও ii খ) i ও iii
গ) ii ও iii ঘ) i, ii ও iii