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Software is a set of instructions that tell a computer what to do.
Software is a collection of programs, data, and instructions that tell a computer how to perform specific tasks.
It can be categorized into system software, application software, and middleware.
Examples of software include Microsoft Office, Adobe Photoshop, and Google Chrome.
Hardware refers to the physical components of a computer system.
Includes components such as the motherboard, CPU, RAM, hard drive, and peripherals
Can be classified as input, output, or storage devices
Examples include a keyboard, mouse, monitor, printer, and scanner
IP stands for Internet Protocol, which is a set of rules governing the format of data sent over the internet.
IP is responsible for routing data packets between devices on the internet.
It provides a unique address for each device connected to the internet.
There are two versions of IP: IPv4 and IPv6.
IPv4 addresses are 32-bit numbers, while IPv6 addresses are 128-bit numbers.
IP is a fundamental protocol in the internet pr
DNS stands for Domain Name System. It is a system that translates domain names into IP addresses.
DNS is like a phonebook for the internet
It helps to locate websites by translating domain names into IP addresses
DNS servers store information about domain names and their corresponding IP addresses
DNS is essential for browsing the internet and accessing websites
LAN stands for Local Area Network, a computer network that connects devices within a limited area.
LAN is a type of network that connects devices within a limited area such as a home, office, or building.
It allows devices to communicate with each other and share resources like printers and files.
LANs can be wired or wireless and can be set up using Ethernet cables, routers, and switches.
Examples of LANs include home net
A PoE switch is a network switch that provides power over Ethernet to connected devices.
PoE stands for Power over Ethernet
PoE switches can power devices such as IP cameras, wireless access points, and VoIP phones
PoE switches can simplify installation and reduce costs by eliminating the need for separate power supplies
There are two types of PoE: standard PoE and PoE+ (also known as PoE plus or 802.3at)
PoE switches can b
NVR stands for Network Video Recorder.
It is a device used for recording and storing video footage from IP cameras.
It is connected to a network and can be accessed remotely.
It can be used for surveillance and security purposes.
It can support multiple cameras and can record footage continuously or on a schedule.
It can also have features like motion detection and alerts.
Examples of NVR brands include Hikvision, Dahua, and
A network is a group of interconnected devices that can communicate and share resources.
Networks can be wired or wireless
Devices on a network can include computers, printers, routers, and servers
Networks can be local (LAN) or wide area (WAN)
Examples of networks include the internet and corporate networks
A router is a networking device that forwards data packets between computer networks.
Routers operate at the network layer of the OSI model.
They use routing tables to determine the best path for data to travel.
Routers can connect multiple networks together, such as a home network to the internet.
Examples of routers include Cisco, Netgear, and TP-Link.
A switch is a networking device that connects devices together on a computer network.
Switches operate at the data link layer of the OSI model.
They use MAC addresses to forward data to the correct destination.
Switches can improve network performance by reducing network congestion.
Examples of switches include Cisco Catalyst and Juniper EX Series switches.
I applied via Naukri.com and was interviewed in Aug 2020. There were 3 interview rounds.
Name mangling is a technique used by compilers to give unique names to functions and variables to avoid naming conflicts.
Name mangling is used in C++ to support function overloading.
It is also used in Python to avoid naming conflicts in modules.
Name mangling can make it difficult to access variables and functions from outside the class in which they are defined.
In C++, name mangling can be seen by using the 'nm' comman
I applied via Naukri.com and was interviewed before Jul 2020. There was 1 interview round.
I applied via Naukri.com and was interviewed before Oct 2021. There were 3 interview rounds.
AD DNS DHCP are Microsoft technologies used for network management and authentication.
Active Directory (AD) is a directory service used for authentication and authorization of users and computers in a network.
Domain Name System (DNS) is used for name resolution of network resources.
Dynamic Host Configuration Protocol (DHCP) is used for automatic IP address assignment to network devices.
AD, DNS, and DHCP are often used ...
IaaS, SaaS, and PaaS are cloud computing models that provide different levels of infrastructure, software, and platform services.
IaaS (Infrastructure as a Service) provides virtualized computing resources over the internet, such as servers, storage, and networking.
SaaS (Software as a Service) delivers software applications over the internet, eliminating the need for local installation and maintenance.
PaaS (Platform as ...
General questions for 1 hors online exams
I applied via Recruitment Consultant and was interviewed in Mar 2021. There were 3 interview rounds.
I applied via Naukri.com and was interviewed in Nov 2020. There were 5 interview rounds.
I applied via Campus Placement and was interviewed before Apr 2020. There were 3 interview rounds.
I applied via Job Fair and was interviewed before May 2021. There were 2 interview rounds.
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