Mobile Technologies Class 10 MCQ Questions with Answers
Question 1.
Which is the world’s most widely used cellphone technology?
(A) GPS
(B) GPRS
(C) GSM
(D) CDMA
Answer:
(C) GSM
Explanation:
The Global System for Mobile Communications is a standard developed by the European Telecommunications Standards Institute to describe the protocols for second- generation digital cellular networks used by mobile devices such as mobile phones and tablets. It was first deployed in Finland in December 1991.
Question 2.
CDMA uses ……….waves.
(A) Radio
(B) Micro
(C) Infrared
(D) Electromagnetic
Answer:
(D) Electromagnetic
Explanation:
Code-division multiple access is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel.
Question 3.
Which technology is used to connect subscriber to nearest telephone exchange through using radio link?
(A) CDMA
(B) WLL
(C) GSM
(D) Wi-Fi
Answer:
(B) WLL
Explanation:
Wireless local loop, is the use of a wireless communications link as the “last mile / first mile” connection for delivering plain old telephone service or Internet access to telecommunications customers.
Question 4.
In TDMA, T stands for :
(A) Time
(B) Third
(C) Technology
(D) Triple
Answer:
(A) Time
Explanation:
Time-division multiple access is a channel access method for shared-medium networks. It allows several users to share the same frequency channel by dividing the signal into different time slots.
Question 5.
…………… is a mode of sending and receiving short messages from one phone to another.
(A) SMS
(B) MMS
(C) CDMA
(D) GSM
Answer:
(A) SMS
Explanation:
SMS text messaging supports languages internationally. It works fine with all languages supported by Unicode, including Arabic, Chinese, Japanese and Korean.
Question 6.
Multimedia messaging is also known as………
(A) Color messaging
(B) Picture messaging
(C) Text messaging
(D) None of these
Answer:
(B) Picture messaging
Explanation:
MMS permits mobile subscribers to send multimedia files su ch as images, videos, audios, etc., as a message.
Question 7.
………. refers to the third generation of mobile telephony technology.
(A) 2G
(B) 3G
(C) 4G
(D) 5G
Answer:
(B) 3G
Explanation:
3G is generally used in phones i and handsets as a means to connect the phone ! to the internet in order to make voice and video calls, to download and upload data, and I to surf the Web.
Question 8.
SMS appeared on the wireless scene in 1991 in
(A) USA
(B) London
(C) Turkey
(D) Europe
Ans.
(D) Europe
Explanation:
An SMS message is sent from a device to a Short Message Service Center (SMSC), which, in turn, communicates with mobile networks to determine the subscriber’s location. Then, the message is forwarded as a small data packet to the destination device. Subsequent messages sent by the original source device undergo the same process, also known as store and forward.
Assertion and Reason Based MCQs
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
(A) Both A and R are true and R is the correct explanation of A
(B) Both A and R are true but R is Not the correct explanation of A
(C) A is true and R is false
(D) A is false and R is true
Question 1.
Assertion(A): SMS messages are also sent via web-based browser applications, instant message (IM) applications and Voice over Internet Protocol (VoIP) applications, such as Skype.
Reason(R): SMS works fine with only English language.
Answer:
(C) A is true and R is false
Explanation:
SMS text messaging supports languages internationally. It works fine with all languages supported by Unicode, including Arabic, Chinese, Japanese and Korean.
Question 2.
Assertion(A): MMS supports attachments just as e-mail does.
Reason(R): MMS is a store-and-forward method of transmitting graphics, video clips, sound files and short text messages over wireless networks via WAP protocol.
Answer:
(D) A is false and R is true
Explanation:
MMS is based on the concept of multimedia messaging. MMS does not support attachments as e-mail does. The important use of MMS is for communication between mobile phones.
Question 3.
Assertion(A): 3G offers higher data speed.
Reason(R): 3G does not support videoconferencing.
Answer:
(C) A is true and R is false
Explanation:
The International Telecommuni-cations Union (ITU) defined the third genera-tion (3G) of mobile telephony standards IMT- 2000 to facilitate growth, increase bandwidth, and support more diverse applications.
Question 4.
Assertion(A): 4G is a mobile multimedia, available anytime anywhere.
Reason(R): 4G is easier to standardize and it offers affordability.
Answer:
(B) Both A and R are true but R is Not the correct explanation of A
Explanation:
4G wireless technology is also referred to by “MAGIC” which stands for Mobile multimedia, Any-where, Global mobility solutions over, Integrated wireless and Customized services.
Question 5.
Assertion(A): The cost of upgrading to 3G device is expensive.
Reason(R): It requires closer base stations that is very expensive.
Answer:
(A) Both A and R are true and R is the correct explanation of A
Explanation:
3G refers to the third generation of cellular technology that enables mobile telephony. The third-generation standard follows two earlier generations that were deployed on mobile networks and across mobile phones.
Question 6.
Assertion(A): Class 0 SMS is displayed on the mobile screen without being saved in the message store or on the SIM card.
Reason(R): As Class SMS disappears after reading it.
Answer:
(A) Both A and R are true and R is the correct explanation of A
Explanation:
Class 0 SMS (Short Message Service) text messages aren’t stored in the memory of the message recipient’s cell phone. Unless saved upon review by the message ? recipient, Class 0 SMS text messages disappear after being read. Class 0 messages can also be used to “ping” another cell phone. They can receive confirmation of a recipient’s messaging capabilities without the recipient even knowing they were pinged. While Class 0 messages can be abused, they can also be an effective troubleshooting tool for SMS communication
Case- Based MCQs
Attempt any four sub-parts from each question. Each sub-part carries 1 mark.
I. Mobile Technology
Mobile technology is a technology where the user uses mobile phone to do the operations related to communication system, for example to establish communication with friends, relatives and others. It uses to transmit the data from one system to others. Mobile Technology consists of portable two-way communications systems, computing devices, and the related networking equipment. Mobile technology is a technology which is used primarily in cellular communication system and other related aspects. It uses a network type in which several transmitters are able to send data on a single channel at the same time. This model is known as Code-Divisions Multiple Accesses (CDMA). This platform allows many users to use single frequencies, as it limits the possibility of frequency interference from two or more sources.
Over the years, the channel has grown. Mobile technology is evolving rapidly; its applications are becoming increasingly diverse over the years and are gradually replacing some similar sources on the market that are also used for communication, e.g. post office and land lines. Mobile technology has improved from a basic phone call and texting device into a multi-tasking system used for GPS navigation, internet browsing, gaming, instant messaging, etc. With the rise, professionals argue that computer technology’s future depends on wireless networking and mobile computing. Mobile technology is becoming more and more popular through tablets and portable computers. Mobile Technology is characterized as any device with internet capabilities that can be accessed from wherever the user is. Current devices in this class contain devices like smartphones, tablets, some iPods and laptops, although this list will certainly increase in the coming years.
Following are the key mobile technologies,
1. SMS: “SMS” means Short Message Service. It is now a days the oldest and most commonly used text messaging service. SMS was initially designed for phones using GSM (Global System for Mobile Communications) communication, but it is now supported by all major cellular phone systems.
2. MMS: MMS messaging known as Multimedia Messaging Service is a standard way to deliver multimedia content-including messages. In comparison to SMS, MMS can offer a variety of media including up to 40 seconds of video, one picture, a multi-image slideshow, or audio.
3. 3G: Number three in 3G’s name means third generation access technology which allows mobile phones to be connected to the internet. Every new technology has new frequency bands and higher rates of data transmission.
4. 4G: 4G is the fourth generation of mobile networking technology. It carries on from mobile technology of 3G and 2G. Compared with 3G, the 4G networks are very good. Premium 4G provides download speeds of about 14 Mbps, which is almost five times faster than that provided by its predecessor, the 3G network. Currently, 4G networks can reach speeds as high as 150 Mbps, enabling users to download gigabytes of data in minutes or even seconds, rather than hours like with 3G networks.
Question 1.
In which one of the following codes with specific characteristics can be applied to the transmission?
(A) CDMA
(B) GPRS
(C) GSM
(D) All of the above
Answer:
(A) CDMA
Explanation:
Code Division Multiple Access (CDMA) is a sort of multiplexing that facilitates various signals to occupy a single transmission channel. It optimizes the use of available S bandwidth. The technology is commonly used in ultra-high-frequency (UHF) cellular telephone systems, bands ranging between the 800-MHz and 1.9-GHz.
Question 2.
Write the full form of CDMA.
(A) Character-Divide Multiple Accesses
(B) Code-Divide Multiple Accesses
(C) Character-Divisions Media Accesses
(D) Code-Divisions Multiple Accesses
Answer:
(D) Code-Divisions Multiple Accesses
Explanation:
Code Divisions Multiple Access system is very different from time and frequency multiplexing. In this system, a user has access to the whole bandwidth for the entire duration. The basic principle is that different CDMA codes are used to distinguish among the different users.
Question 3.
Which of the following offers packet mode data transfer service over the cellular network?
(A) TCP
(B) GPRS
(C) GSM
(D)None of the above
Answer:
(B) GPRS
Explanation:
General Packet Radio System is also known as GPRS is a third-generation step toward internet access. GPRS is also known as GSM-IP that is a Global-System Mobile Communications Internet Protocol as it keeps the users of this system online, allows to make voice calls, and access internet on-the-go. Even Time-Division Multiple Access (TDMA) users benefit from this system as it provides packet radio access.
Question 4.
Which one of the following enables us to use the entire bandwidth simultaneously?
(A) TDMA
(B) CDMA
(C) FDMA
(D) All of the above
Answer:
(B) CDMA
Explanation:
CDMA allows up to 61 concurrent users in a 1.2288 MHz channel by processing each voice packet with two PN codes.
Question 5.
Mobile Computing allows transmission of data from one wireless-enabled device to another
(A) Any device
(B) Wired device
(C) Wireless-enabled device
(D) One of the above
Answer:
(C) Wireless-enabled device
Explanation:
Mobile technology is a form of technology and it is mostly used in cellular communication and other related aspects. It includes SMS, MMS, 3G and 4G. It is a portable electronic device and allows you to share the data from one phone to another.
Question 6.
Which of the following is supported data rates of 4G Networks?
(A) 1024 kbps
(B) 150 mbps
(C) 200 mbps
(D) None of the above
Answer:
(B) 150 mbps
Explanation;
4G is a mobile multimedia, available anytime anywhere, Global mobility support, integrated wireless solution, and customized personal service network system.
Question 7.
Write the full form of GSM.
(A) Globe System for Mobile Communications
(B) Global System for Media Communications
(C) Global System for Mobile Communications
(D) Global System for Mobile Characteristics Answer:Option (C) is correct.
Explanation:
GSM stands for Global System for Mobile Communications. It is a digital cellular technology used for transmitting mobile voice and data services.
II. First Generation
1G (First Generation) was introduced in 1980 and was based on narrow band analog cellular technology. It used circuit switching and only voice calls were available. It used radio waves for transmission. 1G used CDMA (Code Division Multiple Access). Each user was allocated a unique code sequence. The sender encoded the signal using the given code. The receiver also had the unique code and used it to decode the data. 2G (Second Generation) was introduced in 1990s and was based on GSM technology. It is used circuit switching but provided paging, SMS, voicemail and fax services. GSM (Global System for Mobile communications) is a combination of FDMA and TDMA. SIM (Subscriber Identification Module) cards are interchangeable modules which store subscriber and wireless provider information.
Question 1.
1G was introduced in………
(A) 1979
(B) 1980
(C) 1981
(D) 1982
Answer:
(B) 1980
Explanation:
Launched by Nippon Telegraph and Telephone in 1980,1G was first introduced to the citizens of Tokyo. By 1984, the first generational network covered all of Japan, making it the first country to have 1G service nationwide.
Question 2.
First Generation technology was based on narrow band technology.
(A) Cellular
(B) Digital
(C) Global
(D) None
Answer:
(A) Cellular
Explanation:
Wireless networks based on analog frequency division multiple access technologies. Many systems were individually tailored, country-specific solutions, including technologies such as AMPS, Nordic Mobile Telephone (NMT) and total access communications system (TACS).
Question 3.
1G technology uses for transmission.
(A) Wires
(B) Plugs
(C) Radio waves
(D) Optical fiber
Answer:
(C) Radio waves
Explanation:
Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies as high as 300 gigahertz (GHz) to as low as 30 hertz (Hz).
Question 4.
In CDMA, C stands for………
(A) Cost
(B) Count
(C) Code
(D) Coast
Answer:
(C) Code
Explanation:
Code Division Multiple Access (CDMA) is an alternative cell phone technology to GSM. CDMA uses a “broad -spectrum” electromagnetic waves for signaling with wider bandwidth. This allows multiple people on multiple cell phones to be “communicated” over the same channel to share a bandwidth of frequencies.
Question 5.
Second Generation was based on……….
(A) GSM technology
(B) SIM technology
(C) Both (A) and (B)
(D) None of these
Answer:
(A) GSM technology
Explanation:
Global System for Mobile communications (GSM) is world’s most widely used cell phone technology having 80% mobile phone users. It is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe protocols for second generation (2G) digital cellular networks for mobile phones.
Question 6.
…………..is a combination of FDMA and TDMA.
(A) 1G
(B) 2G
(C) GSM
(D) SIM
Answer:
(C) GSM
Explanation:
The Global System for Mobile Communications is a standard developed by the European Telecommunications Standards Institute to describe the protocols for second generation digital cellular networks used by mobile devices such as mobile phones and tablets. It was first deployed in Finland in December 1991.
Question 7.
……………. are interchangeable m odules which store subscriber……..and wireless provider information.
(A) 1G
(B) 2G
(C) GSM
(D) SIM
Answer:
(D) SIM
Explanation:
SIM (Subscriber Identification Module) are inter- changeable modules which store subscriber and wireless provider information.
III. 3G and 4G
3G is the third generation of Wireless & Mobile technologies. The “G” in 3G stands for generation. 3G networks reach 2mbps. It comes with enhancements over previous wireless technologies, like high-speed transmission, advanced multimedia access and global roaming. 3G is mostly used with mobile phones and handsets as a means to connect the phone to the internet. 3G allows connection with other IP networks in order to make voice and video calls, to download and upload data and to surf the net. 4G is fourth-generation of wireless service, which refers to the next wave of high-speed mobile technologies that will be used to replace current 3G networks. 4G wireless network is next step of 3G, which is currently the most widespread, high-speed wireless service.
Question 1.
………….. is the Wireless & Mobile technologies.
(A) 1G
(B) 2G
(C) 3G
(D) 4G
Answer:
(C) 3G
Explanation:
3G is the third generation of Wireless & Mobile technologies. It comes with enhancements over previous wireless technologies, like high-speed transmission, advanced multimedia access and global roaming. 3G is mostly used with mobile phones and handsets as a means to connect the phone to the internet or other IP networks in order to make voice and video calls, to download and upload data and to surf the net.
Question 2.
………. refers to the next wave of high speed mobile technologies of 3G.
(A) 3G
(B) 4G
(C) Both (A) arid (B)
(D) None of these
Answer:
(B) 4G
Explanation:
4G is the fourth generation of mobile networking technology. It carries on from mobile technology of 3G and 2G. Compared with 3G, the 4G networks are very good. Premium 4G provides download speeds of about 14 Mbps, which is almost five times faster than that provided by its predecessor, the 3G network.
Question 3.
3G is mostly used with mobile phones and handsets as a means to connect the phone to the
(A) Wireless
(B) Internet
(C) Other Mobiles
(D) Network
Answer:
(B) Internet
Explanation:
Number three in 3 G’s name means third generation access technology which allows mobile phones to be connected to the internet. Every new technology has new frequency bands and higher rates of data transmission.
Question 4.
The “G” in 3G stands for ………
(A) Generation
(B) Genres
(C) Genetic
(D) Generator
Answer:
(A) Generation
Explanation:
It allows mobile operators to offer more service options to their users, including mobile broadband. 3G broadband offers greater flexibility and services by making more efficient use of mobile bandwidth. It is also known as IMT-2000.
Question 5.
3G allows connection with other IP networks in order to make .
(A) Voice
(B) Video calls
(C) Both (A) and (B)
(D) None of these
Answer:
(C) Both (A) and (B)
Explanation:
3G networks succeed 2G ones, offering faster data transfer rates and are ? the first to enable video calls. This makes , them especially suitable for use in modern ; smart phones, which require constant high- % speed internet connection for many of their if applications.
Question 6.
3G allows connection with other networks.
(A) IP
(B) MAC
(C) TCP
(D) HTTP
Answer:
(A) IP
Explanation:
The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries.
Question 7.
3G networks reach ……….
(A) 2Mbps
(B) 4Mbps
(C) 6Mbps
(D) 8Mbps
Answer:
(A) 2Mbps
Explanation:
3G is the third generation of wireless mobile telecommunications ‘ technology. It is the upgrade for 2.5G GPRS ’ and 2.75G EDGE networks, for faster data transfer.