20+ Trainee Network Engineer Interview Questions and Answers

A network is a group of interconnected devices that communicate with each other. OSI layers are a model for understanding network communication.

• OSI layers are a conceptual model for understanding how data is transmitted over a network.

• There are seven layers in the OSI model, each with a specific function.

• The layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer communicates with the layer above and below it, and each layer adds...read more

There are several types of networks, including LAN, WAN, MAN, WLAN, and VPN.

• LAN (Local Area Network) - a network that connects devices within a small area, such as a home or office.

• WAN (Wide Area Network) - a network that connects devices across a large geographical area, such as the internet.

• MAN (Metropolitan Area Network) - a network that connects devices within a city or metropolitan area.

• WLAN (Wireless Local Area Network) - a LAN that uses wireless connections instead of ...read more

The data transfer happens at the Transport layer.

• The Transport layer is responsible for end-to-end communication between devices.

• It ensures reliable data transfer and error correction.

• Examples of protocols at this layer include TCP and UDP.

TCP is a protocol used for reliable transmission of data over networks.

• TCP stands for Transmission Control Protocol.

• It is a connection-oriented protocol that ensures reliable delivery of data packets.

• TCP uses a three-way handshake to establish a connection between two devices.

• It provides flow control, congestion control, and error detection and correction mechanisms.

• TCP is used for applications that require reliable data transmission, such as email, file transfer, and web bro...read more

I am a network enthusiast with a passion for learning and problem-solving. NTT is a global technology services company. Networking involves connecting devices to share information. A router is a device that forwards data packets between computer networks. The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.

• NTT is a leading global technology services company providing networking solutions.

• Networki...read more

There are various colors available for Cat 6 cables, including blue, green, red, yellow, black, and white.

• Blue

• Green

• Red

• Yellow

• Black

• White

Spanning Tree Protocol (STP) prevents loops in network topologies, ensuring efficient data flow in Ethernet networks.

• STP identifies and disables redundant paths to prevent broadcast storms.

• It uses a tree structure to maintain a loop-free topology.

• Example: In a network with multiple switches, STP will block some links to avoid loops.

• STP elects a root bridge to manage the network topology.

• It can dynamically adjust to changes in the network, such as a switch failure.

L2 switches operate at the data link layer and make forwarding decisions based on MAC addresses, while L3 switches operate at the network layer and make forwarding decisions based on IP addresses.

• L2 switches operate at the data link layer of the OSI model.

• L3 switches operate at the network layer of the OSI model.

• L2 switches make forwarding decisions based on MAC addresses.

• L3 switches make forwarding decisions based on IP addresses.

• L3 switches are capable of routing between di...read more

RJ45 connector is a standardized physical interface for connecting Ethernet cables to network devices.

• RJ45 connector has 8 pins and is commonly used for Ethernet connections.

• It is used to connect computers, routers, switches, and other network devices.

• RJ45 connectors are typically used with Cat5, Cat5e, Cat6, or Cat6a Ethernet cables.

Fiber optic is a technology that uses glass or plastic threads to transmit data as pulses of light.

• Fiber optic cables are made up of thin strands of glass or plastic called fibers.

• Data is transmitted through these fibers in the form of light pulses.

• Fiber optic technology is known for its high bandwidth and fast data transmission speeds.

• Examples of fiber optic applications include internet connections, telecommunications, and cable television.

DHCP is a network protocol that assigns IP addresses automatically, while VLAN is a way to segment a network into separate virtual networks.

• DHCP stands for Dynamic Host Configuration Protocol

• DHCP automatically assigns IP addresses to devices on a network

• VLAN stands for Virtual Local Area Network

• VLANs allow for segmentation of a network into separate virtual networks

• VLANs can improve network security and efficiency

Yes, I am willing to relocate for the Network Engineer Trainee position.

• I am open to exploring new opportunities in different locations

• I understand that relocation may be necessary for career growth

• I am willing to adapt to new environments and cultures

• I have relocated for previous job opportunities and have had positive experiences

OSI Models are a conceptual framework that standardizes communication protocols between different systems.

• OSI stands for Open Systems Interconnection

• It has 7 layers, each with a specific function

• Layers are numbered from 1 to 7, with 1 being the lowest and 7 being the highest

• Each layer communicates with the layer above and below it

• Examples of layers include physical layer, data link layer, network layer, transport layer, session layer, presentation layer, and application layer

IP stands for Internet Protocol, 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 assigns a unique address to each device connected to the internet.

• There are two versions of IP - IPv4 and IPv6.

• IPv4 uses 32-bit addresses while IPv6 uses 128-bit addresses.

• IP is a layer 3 protocol in the OSI model.

• Examples of IP-based protocols include TCP, UDP, and ICMP.

LAN network stands for Local Area Network, which is a network that connects computers and devices within a limited area such as a home, office, or building.

• LAN networks are typically used for sharing resources like printers, files, and internet access within a small area.

• LAN networks are usually faster and more secure than wide area networks (WANs) because they are confined to a smaller geographic area.

• Examples of LAN technologies include Ethernet, Wi-Fi, and Token Ring.

SaaS is software delivered over the internet, while cloud computing refers to the on-demand availability of computer resources.

• SaaS stands for Software as a Service and is a software delivery model where applications are hosted by a provider and accessed over the internet.

• Cloud computing is the delivery of computing services, including servers, storage, databases, networking, software, analytics, and intelligence, over the internet.

• SaaS is a subset of cloud computing, as it s...read more

OSI (Open Systems Interconnection) layer is a conceptual model that describes the communication functions of a telecommunication or computing system.

• OSI model has 7 layers, each with a specific function

• Each layer communicates with the layer above and below it

• Layers are numbered from 1 to 7, with 1 being the physical layer and 7 being the application layer

• Examples of layers include physical layer, data link layer, network layer, transport layer, session layer, presentation lay...read more