Vserv Infosystems Desktop Support Engineer L1 and L2 Interview Questions and Answers

There are mainly three types of networks: LAN, WAN, and MAN.

• Local Area Network (LAN) - used to connect devices within a limited area like a home, office, or school.

• Wide Area Network (WAN) - connects devices over a large geographical area, often using public infrastructure like the internet.

• Metropolitan Area Network (MAN) - covers a larger area than a LAN but smaller than a WAN, typically within a city.

Topology refers to the arrangement of nodes in a network and how they are connected.

• Topology defines the physical or logical layout of a network.

• Common topologies include bus, star, ring, mesh, and hybrid.

• Each topology has its own advantages and disadvantages in terms of cost, scalability, and fault tolerance.

The OSI model has 7 layers that define how different devices communicate over a network.

• The OSI model stands for Open Systems Interconnection model

• Each layer has specific functions and interacts with adjacent layers

• Layers include Physical, Data Link, Network, Transport, Session, Presentation, and Application

• Data is passed down through the layers on the sending device and up through the layers on the receiving devi...read more

APIPA stands for Automatic Private IP Addressing and is used when a device cannot obtain an IP address from a DHCP server.

• APIPA assigns a unique IP address to a device when it cannot connect to a DHCP server.

• It allows devices to communicate on a local network even without a DHCP server.

• APIPA addresses are in the range of 169.254.0.1 to 169.254.255.254.

• It is commonly used in small home or office networks where a DH...read more

Network & networking refers to the practice of connecting computers and other devices to share resources and information.

• Network refers to a collection of computers and devices connected together to share resources and information.

• Networking involves the design, implementation, and management of these networks.

• Types of networks include LAN (Local Area Network), WAN (Wide Area Network), and WLAN (Wireless Local Are...read more

DHCP stands for Dynamic Host Configuration Protocol. It is a network protocol that automatically assigns IP addresses to devices on a network.

• DHCP eliminates the need for manual IP address configuration

• It allows devices to easily connect to a network and obtain necessary network settings

• DHCP servers lease IP addresses to devices for a specific period of time

• Commonly used in home and business networks to manage IP ...read more

The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven different layers.

• The OSI model stands for Open Systems Interconnection model.

• It helps in understanding how data is transferred from one computer to another over a network.

• Each layer has specific functions and interacts with adjacent layers.

• Examples of layers include Physical layer, Data Lin...read more