Explore Exams
Login Signup
Sign in Open App
All Exams  >   Punjab Police SI  >   Punjab Police SI Mock Test Series 2026  >   All Questions

All questions of Punjab Police SI Paper 2 Mock Test for Punjab Police SI Exam

What does E stand for in IMEI code of mobile phone?
  • a)
    Engage
  • b)
    Equipment
  • c)
    Electronic
  • d)
    Ethical
Correct answer is option 'B'. Can you explain this answer?

Catalyst Learningacademy answered
E stand for Equipment in IMEI code of the mobile phone.
  • International Mobile Equipment Identity is the full form of IMEI.
  • IMEI is a number that facilitates device validity identification.
  • International Mobile Equipment Identity is a factory-installed unique serial number that identifies each unit or line of service under GSM (Global System for Mobile Communications) specifications. 
  • The IMEI is strictly used for identification by Global System for Mobile Communications (GSM), Wideband Code Division Multiple Access (WCDMA), and some satellite devices.
  • The IMEI number is unique and typically 15 or 17 digits.
  • In most mobile communications devices, the IMEI appears on the display when the user enters the character sequence *#06# or is stored on the battery's backside.
  • Motorola phones only have 14 digits so add the number 0 at the end.
  • Most phones have one IMEI number, but dual SIM phones are two.
  • The IMEI number does not have a permanent subscriber relationship.
  • Swapping a SIM card cannot prevent phone banning because the IMEI number is stored inside the phone - not the SIM card.
  • The IMEI number's primary purpose is blocking or tracking lost mobile phones via the IMEI database (IMEI DB).
  • IMEI database (IMEI DB) is a central database containing basic IMEI information.
  • The IMEI number is transmitted and verified by the IMEI DB in the network's Equipment Identity Register (EIR).
  • The EIR is a database for all IMEIs and it stores all device identifications registered for this network.
  • The GSM association provides IMEI DB member access to GSM and 3G operators across the world.
  • Network operators use IMEI DB data to determine customer device types and supported features.
  • When a phone set is lost or stolen, the owner can call the CEIR (Central Equipment Identity Register) and blacklist the device according to its IMEI number. 
  • SIM (Subscriber Identity Module) is a ''smart'' card installed or inserted into a mobile device containing all subscriber-related data. The SIM number is 15 digits.
  • MSN (Mobile Serial Number) is also referred to as serial number (SN) is a 10-digit number. It is required for each SIM card-capable device.
  • PIN (Personal Identification Number) identifies the equipment model and is normally associated with a SIM card.
Clear all your doubts with EduRev

A complete operating system that works on a desktop computer, notebook computer, or a mobile computing device is called _______ operating system.
  • a)
    Stand-alone
  • b)
    Real time
  • c)
    Server
  • d)
    Mobile
Correct answer is option 'A'. Can you explain this answer?

Catalyst Learningacademy answered
Stand-alone Operating System
  • A standalone operating system is an operating system that works on devices such as notebook, desktop computer or a laptop. Hence, Option 1 is correct.
  • A stand-alone operating system provides an entire working framework. DOS, Windows 95, Mac OS, and Windows 2000 professional are some examples of standalone operating systems. 

Which of the following is not a mobile Operating System?
  • a)
    Palm OS
  • b)
    Web OS
  • c)
    Symbian OS
  • d)
    Mac OS
Correct answer is option 'D'. Can you explain this answer?

Catalyst Learningacademy answered
  • Mac OS is the primary Operating system for Apple Computers. It is a UNIX operating System. Mac OS is developed and marketed by Apple Inc. in California, USA. 
  • Mac OS is the second most widely used operating system after Windows. Mac OS was initially developed at NEXT an American technology company by Steve Jobs in 1985.
  • Mac OS Latest version at present is MOJAVE 10.14.
  • Palm OS (also known as Garnet OS) is a mobile operating system initially developed by Palm, Inc., for personal digital assistants (PDAs) in 1996. 
    • Palm OS was designed for ease of use with a touchscreen-based graphical user interface. It is provided with a suite of basic applications for personal information management.
  • Symbian OS was the most widely-used smartphone operating system in the world until 2010 when it was overtaken by Android.
    • It was discontinued in May 2014.

A SIM in a mobile phone stands for:
  • a)
    Subscriber Internet Module
  • b)
    Subscriber Identity Module
  • c)
    Subscriber Internet Model 
  • d)
    Subscriber Identity Memory
Correct answer is option 'B'. Can you explain this answer?

Catalyst Learningacademy answered
  • SIM is an integrated circuit that securely stores the international mobile subscriber identity (IMSI).
  • It is a portable memory chip that makes you able to make phone calls across the world where a subscriber's network is available.
  • SIM is generally used in mobile phones that operate on a GSM network. It is portable and you can use it with any supporting mobile phone.
  • A SIM also contains its unique serial number (ICCID), International Mobile Subscriber Identity (IMSI), security information, ciphering information, temporary information related to the local network, etc.
The SIM card contains the necessary information to and fro to your network and it also contains some of your personal data like:
  • Phone number
  • Address book
  • Network authorization data
  • Text messages
  • Personal security keys
  • Other data

______is the term updates by Twitter users.
  • a)
    Tweets
  • b)
    Tweats
  • c)
    Twinks
  • d)
    Posts
Correct answer is option 'A'. Can you explain this answer?

Catalyst Learningacademy answered
  • Tweets are the messages or updates posted by users on Twitter.
  • Twitter allows their users to read, like, and retweets the tweets of their likings.
Parag Agrawal is currently the chief executive officer of Twitter.
He replaces Jack Dorsey in November 2021.
Jack Dorsey is the co-founder of Twitter.
Twitter was founded on 21 March 2006 in the USA.

With reference to "Software as a Service (SaaS)", consider the following statements: 
  1. SaaS buyers can customize the user interface and can change data fields 
  2. SaaS users can access their data through their mobile devices Outlook, Hotmail and Yahoo! Mail are Forms of SaaS 
  3. Outlook, Hotmail and Yahoo! Mail are forms of SaaS 
Which of the statements given above are correct 
  • a)
    1 and 2 only 
  • b)
    2 and 3 only
  • c)
    1 and 3 only
  • d)
    1, 2 and 3
Correct answer is option 'D'. Can you explain this answer?

Catalyst Learningacademy answered
  • "Software as a Service (SaaS)", is a cloud based way of providing software to users. 
  • SaaS users subscribe to an application instead of purchasing it and can access the data from any device. SaaS applications can be accessed through a browser or an app. Such as Outlook, Hotmail and Yahoo! etc. are examples of E-mail applications SaaS. The SaaS buyer can customize the user interface as well as change the data fields.

For which of the following words has the letter 'G' been used in 4G technology in mobile communication?
  • a)
    Grade
  • b)
    Group
  • c)
    Global
  • d)
    Generation
Correct answer is option 'D'. Can you explain this answer?

Catalyst Learningacademy answered
The letter 'G' has been used for Generation in 4G technology in mobile communication.
Meaning of 'G' in mobile signal
  • The G in 2G, 3G and 4G stands for Generation, and they refer to the 2nd, 3rd and 4th generation of wireless technology. 
  • The higher the generation the better, fast, and powerful will be the network.
  • Letter G stands for GPRS (General Packet Radio Service).
  • It indicates the slowest speed of internet data transfer on our mobile phone.

VoIP is a technology useful for both consumers and businesses, as it typically includes other features that can't be found on common phone services. VoIP stands for ________
  • a)
    voice order Internet Protocol
  • b)
    voice of Internet Protocol
  • c)
    voice over internet protocol
  • d)
    voice off Internet Protocol
Correct answer is option 'C'. Can you explain this answer?

Catalyst Learningacademy answered
  • By using a broadband Internet connection rather than an ordinary (or analog) phone line, Voice over Internet Protocol (VoIP) technology enables voice calls to be placed.
  • Due to the fact that VoIP frequently comes with additional capabilities not included in standard phone lines, it is a technology that is beneficial for both consumers and enterprises.
  • These options may include voicemail to email, custom caller ID, or call recording. It is beneficial to businesses as a tool to synchronize communications.
  • You need a modem and router, both of which are components of your current internet configuration, for a VoIP phone system to function. Any device with your call software downloaded can place calls. This gadget could be a desktop, laptop, or smartphone.
  • VoIP is a cheap substitute for the conventional phone system. VoIP uses your internet or broadband connection to make and receive phone calls, as the name would imply.

Which among the following is a mobile phone gaming virus?
  • a)
    Trojan Horse
  • b)
    Creeper
  • c)
    Brain
  • d)
    None of the above
Correct answer is option 'A'. Can you explain this answer?

Catalyst Learningacademy answered
  • The term "Trojan horse" refers to a type of malicious software or malware that disguises itself as a harmless program or file, but once installed on a computer, it can enable unauthorised access to the system or steal sensitive information.
  • In the context of computer security, a Trojan Horse typically works by tricking the user into downloading and installing the software, often through a phishing email or a fake software update. Once installed, the Trojan can give an attacker remote access to the infected machine, allowing them to steal passwords, install other malware, or use the computer as part of a botnet for illicit activities like sending spam or launching DDoS attacks.
  • Trojan IM and Trojan-Ransom are the types of gaming viruses. 

On successful compilation of an Android application project, the ________ output file should be downloaded to your mobile for the app to be installed
  • a)
    .apk file
  • b)
    .jdk file
  • c)
    .pdb file
  • d)
    .sdk file
Correct answer is option 'A'. Can you explain this answer?

Catalyst Learningacademy answered
  • .apk file: The full form of .apk is Android Package. On the successful compilation of an Android application project, the .apk output file should be downloaded to your mobile for the app to be installed.
  • .jdk file: The full form of .jdk is Java Development Kit. It is referred to as a graphical tool used in Java programming. It is providing elaborate information about the Java program. 
  • .pdb file: The full form of .pdb is the Program Database file. The pdb file is responsible for holding the information on debugging and the state of the project. It is also helping to link debug configuration on the users' applications. 
  • .sdk file: The full form of .sdk is Software Development Kit. It is used as a software development tool. 
Thus the correct answer is the .apk file.

Chapter doubts & questions for Punjab Police SI Paper 2 Mock Test - Punjab Police SI Mock Test Series 2026 2025 is part of Punjab Police SI exam preparation. The chapters have been prepared according to the Punjab Police SI exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Punjab Police SI 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.

Chapter doubts & questions of Punjab Police SI Paper 2 Mock Test - Punjab Police SI Mock Test Series 2026 in English & Hindi are available as part of Punjab Police SI exam. Download more important topics, notes, lectures and mock test series for Punjab Police SI Exam by signing up for free.

Top Courses Punjab Police SI

© EduRev
Education Revolution
Signup on EduRev and stay on top of your study goals
10M+ students crushing their study goals daily