1. Which of the following is the built-in web browser for MacOS ?
JOA-IT 817 *
Correct : C
Explanation: Safari is the default web browser for macOS. It's also the default browser for iOS-based devices like the iPhone, iPad, and iPod.
Safari is a web browser developed by Apple that uses the open-source WebKit browser engine. It's small, fast, and has an easy-to-use interface. Safari was first introduced in 2003.
2. Which network security device allows or blocks the incoming and outgoing network traffic based on a defined set of security rules ?
JOA-IT 817 *
Correct : D
Explanation: A firewall is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules.
3. The concept of CAPTCHA is based on ---- test to distinguish between human and machine operators.
JOA-IT 817 *
Correct : D
Explanation: A CAPTCHA test is designed to determine if an online user is really a human and not a bot. CAPTCHA stands for "Completely Automated Public Turing test to tell Computers and Humans Apart."
4. Which of the following is not a part of a URL ?
JOA-IT 817 *
Correct : C
Explanation: URL contains : protocol, Subdomai, Domain nam, Top level domai, Por, Pat, Quer, Parameter, Fragment
5. Which mode disables a device's all the wireless transmission function like cellular radiom WiFi and Bluetooth ?
JOA-IT 817 *
Correct : D
Explanation: Airplane mode is a setting on mobile devices that prevents them from connecting to cellular and Wi-Fi networks.
6. Which of the following is a free cloud storage service provided by Microsoft to store the personal files of the users ?
JOA-IT 817 *
Correct : D
Explanation: Microsoft OneDrive is a free cloud storage service that provides Microsoft account users with 5 GB of free storage space. OneDrive is part of the Microsoft 365 suite and allows users to store and access files from anywhere with an internet connection.
7. The term SSID is associated with which networks ?
JOA-IT 817 *
Correct : B
Explanation: Service Set Identifier (SSID) is the primary name associated with an 802.11 wireless local area network (WLAN). SSIDs are unique identifiers that are 32 characters long. They are attached to the header of packets that are sent over a WLAN. SSIDs act as a password when a mobile device tries to connect to the BSS.
8. Which of the following network devices operate in Layer-3 of ISO-OSI reference model ?
JOA-IT 817 *
Correct : B
Explanation: Routers work at layer 3 of the Open System Interconnection (OSI) model, which is the Network layer. Routers are hardware devices that route packets between networks. They examine the data structure of a packet and determine whether to forward it.
9. 'IP' of TCP/IP is :
Y.S. Parmar Uni. *
Correct : A
Explanation: TCP/IP is connection-oriented, which means it establishes a connection between the sender and receiver before transmitting data. This ensures that data is delivered reliably and in the correct order.
10. The cryptography techniques Encryption and Decryption works at which layer of OSI model :
Y.S. Parmar Uni. *
Correct : D
Explanation: The Presentation Layer, or Layer 6, of the OSI model is responsible for encryption and decryption. The Presentation Layer is responsible for formatting and presenting data to the application layer. It also handles tasks such as data compression, encryption, and decryption.
11. A physical path is established in all the way from sender to the receiver is knwon as :
Y.S. Parmar Uni. *
Correct : C
Explanation : Circuit switching is a type of network configuration in which a physical path is obtained and dedicated to a single connection between two endpoints in the network for the duration of a dedicated connection.
12. Which one of the following is not a part of network topologies ?
Y.S. Parmar Uni. *
Correct : B
Explanation: Types of network topology include: Mesh topology, Star topology, Bus topology, Ring topology, Tree topology, Hybrid topology
13. Which is not a part of unguided media ?
Y.S. Parmar Uni. *
Correct : D
Explanation: Unguided media is a wireless communication method that transmits data without using physical means to define its path. It uses signals like radio waves, microwaves, infrared, and satellite communication. Example : Radio wave, infrared waves, Microwave.
14. Which of following network protocol is used to send e-mail ?
Y.S. Parmar Uni. *
Correct : D
Explanation: The Simple Mail Transfer Protocol (SMTP) is the standard protocol for sending emails over the internet. It's a TCP/IP protocol that's used by mail servers and other message transfer agents to send and receive mail messages.
15. Different computers are connected to a LAN by a cable and ------ :
Y.S. Parmar Uni. *
Correct : B
Explanation: A NIC is a hardware device that allows a computer to connect to a network. It's typically installed in an expansion slot on the computer's motherboard.
16. The standart protocol of the Internet is :
Y.S. Parmar Uni. *
Correct : C
Explanation: he standard protocol of the internet is TCP/IP, which stands for Transmission Control Protocol/Internet Protocol. TCP and IP are two separate computer network protocols. IP is responsible for obtaining the address to which data is sent, while TCP is responsible for data delivery once the IP address has been found.
17. What is the full form of SMTP ?
Y.S. Parmar Uni. *
Correct : C
Explanation: SMTP stands for Simple Mail Transfer Protocol. It is a protocol for sending emails between computers on a TCP/IP network. SMTP is a standard component of the internet's email infrastructure. Y.S. Parmar Uni. *
18. Which layer in TCP/IP network uses 'Segment' as transfer Unit ?
JOA-IT 913 *
Correct : A
Explanation: The transport layer (layer 4) of the TCP/IP network uses "segment" as a transfer unit. The transport layer also creates virtual Transfer Control Protocol (TCP) or User Datagram Protocol (UDP) connections between network hosts. It sends and receives data (packets) to and from the applications running on its host.
19. Which is a communication mode in which the both sender and receiver may trnasmit simultaneously ?
JOA-IT 913 *
Correct : C
Explanation: Full-duplex mode is a communication mode that allows data to be transmitted in both directions simultaneously. In this mode, the sender and receiver can both transmit and receive at the same time.
20. Which of the following is not an essential component of a data communication system ?
JOA-IT 913 *
Correct : D
Explanation: A data communication system is a combination of hardware and software devices that allow the exchange of data between two devices. Main components are : Message, Sender, Receiver, Transmission Medium and Protocol.