Wipro Network Engineer Interview Questions and Answers

MAC stands for Media Access Control, a unique identifier assigned to network interfaces for communication on a network.

• MAC addresses are 48-bit hexadecimal numbers, typically displayed as six groups of two hexadecimal digits (e.g., 00:1A:2B:3C:4D:5E).

• They are used in Ethernet and Wi-Fi networks to identify devices uniquely within a local network.

• MAC addresses operate at the Data Link Layer (Layer 2) of the OSI mod...read more

Virtual LAN (VLAN) is a network technology that allows for the segmentation of a single physical network into multiple virtual networks.

• VLANs help improve network security by isolating traffic within specific groups or departments.

• They can also improve network performance by reducing broadcast traffic.

• VLANs are configured at the switch level and can span multiple switches.

• Each VLAN operates as a separate network, ...read more

L2 switch operates at the data link layer and forwards packets based on MAC addresses, while L3 switch operates at the network layer and forwards packets based on IP addresses.

• L2 switch operates at the data link layer of the OSI model.

• L2 switch forwards packets based on MAC addresses.

• L2 switch is typically used for creating LANs.

• L3 switch operates at the network layer of the OSI model.

• L3 switch forwards packets ba...read more

DHCP automates IP address assignment in networks, enabling devices to connect seamlessly without manual configuration.

• DHCP stands for Dynamic Host Configuration Protocol.

• It operates on a client-server model where the DHCP server assigns IP addresses to clients.

• The process involves four main steps: Discover, Offer, Request, and Acknowledge (DORA).

• Example: A laptop connects to a Wi-Fi network and requests an IP addr...read more

OSPF (Open Shortest Path First) is a routing protocol used to find the best path for data packets in a network.

• OSPF is a link-state routing protocol

• It uses Dijkstra's algorithm to calculate the shortest path

• OSPF routers exchange link-state advertisements (LSAs) to build a topology map

• It supports VLSM (Variable Length Subnet Masking) and CIDR (Classless Inter-Domain Routing)

• OSPF divides the network into areas to re...read more

I am comfortable with any shifts, including nights, weekends, and holidays.

• I am flexible and adaptable to different work schedules

• I have experience working night shifts and weekends in previous roles

• I understand the importance of maintaining network operations 24/7, which may require working non-traditional hours

MPLS stands for Multiprotocol Label Switching, a technique used in telecommunications networks to direct data packets along predefined paths.

• MPLS is used to improve network performance and efficiency by quickly routing data packets based on labels instead of IP addresses.

• It allows for traffic engineering, quality of service (QoS) prioritization, and virtual private network (VPN) services.

• MPLS is commonly used by s...read more

Fireball is not used in hardware.

• Fireball is not a term commonly used in the context of hardware.

• There is no specific hardware component or technology called Fireball.

• It is possible that the interviewer may have made a mistake or referred to a different term.