Markss InfoTech Network Support Engineer Interview Questions, Process, and Tips

A VLAN (Virtual Local Area Network) is a network of devices that behave as if they are connected to the same physical network, even though they may be located on different segments.

• VLANs divide a single physical network into multiple virtual networks.

• They help improve network security by isolating traffic between different VLANs.

• VLANs can be used to logically group devices based on department, function, or security req...read more

STP stands for Spanning Tree Protocol, a network protocol that ensures a loop-free topology in Ethernet networks.

• STP prevents loops in Ethernet networks by blocking redundant paths

• It elects a root bridge to serve as the central point in the network

• STP calculates the shortest path to the root bridge for each switch

• Common variants include RSTP (Rapid Spanning Tree Protocol) and MSTP (Multiple Spanning Tree Protocol)

Ping command is a network utility tool used to test the reachability of a host on an Internet Protocol (IP) network.

• Ping sends ICMP echo request packets to the target host and waits for a response.

• It measures the round-trip time for packets to reach the destination and come back.

• Ping can also show packet loss and network latency.

• Example: 'ping www.google.com' will send packets to Google's server and display the results

Radio in wireless refers to the transmission of data using radio waves, allowing devices to communicate wirelessly.

• Radio waves are electromagnetic waves that have a frequency suitable for wireless communication.

• They are used in technologies like Wi-Fi, Bluetooth, and cellular networks.

• Radio waves can carry data over long distances without the need for physical cables.

• Devices like smartphones, laptops, and routers use r...read more

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

• Physical Layer: Deals with physical connections and signals (e.g. Ethernet cables)

• Data Link Layer: Manages data transfer between devices on the same network (e.g. MAC addresses)

• Network Layer: Handles routing and forwarding of data packets (e.g. IP addresses)

• Transport Layer: Pr...read more