1 Sep
2021

Top 42 Network Troubleshooting Interview Questions 2023

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networking basic interview questions

Moreover, a collision domain is a logical segment of a network wherein any two network devices connected to the same segment can detect each other’s packets. A gateway is a network node that connects two networks using different communication protocols. It acts as a bridge between two networks and enables data and information to be exchanged between them. In addition, it can also be used to convert between different network protocols, allowing data to be transferred between two networks that would otherwise be incompatible. That concludes our list of 48 networking interview questions and answers that you need to know in 2023, ranging from beginner to advanced. Whether you’re interviewing for an entry-level technician position or a senior role, this guide will help you feel prepared for anything.

Concurrently, since intranets cannot “see” each other, the same pool of private IP addresses can be used for several different ones. Another multiplexing method for combining analog signals is WDM. WDM is a method that combines several signals into a single optical fiber cable using various light wavelengths. FDM is the most frequently used method for analog multiplexing. FDM involves joining separate frequencies to deliver data streams as a single signal.

MAC addresses are used as a network address for communications within a network such as an Ethernet, Wi-Fi, etc. A Network Operating System (NOS) is an Operating System that is designed to support workstations, databases, personal computers, etc over a network. Some examples of NOS are MAC OS X, Linux, Windows Server 2008, etc.

Q58. Tell the key elements of a protocol.

This is how the data packet will reach the destination computer. Ghost Imaging is a software-driven backup method commonly referred to as cloning. The contents of a hard disc are copied to another server in the form of a single compressed file or an image, a collection of files. It can also return a ghost picture to its initial condition if required.

  • The multiplexing method Wavelength Division Multiplexing (WDM) is frequently used in fibre optic communications.
  • According to research Windows Networking has a market share of about 89.7% according to network applications.
  • Tunneling encapsulates one type of data packet within another protocol’s frame for transmission over an incompatible network or infrastructure.
  • The process involves conversion on hostnames into IP addresses.

To combine digital signals, time division multiplexing techniques are used. A Metropolitan Area Network or MAN is consisting of a computer network across an entire city, college campus, or a small region. This type of network is large than a LAN, which is mostly limited to a single building or site. Depending upon the type of configuration, this type of network allows you to cover an area from several miles to tens of miles. A digital signal is a signal that is used to represent data as a sequence of separate values at any point in time. This type of signal represents a real number within a constant range of values.

Unlike other topologies that describe how devices are physically and logically connected in the network, a mesh topology describes how many connections each device has. There are two types of mesh topology; fully meshed topology and partially meshed topology. In this blog, we have covered some of the basic networking interview questions you may encounter. Whether you are applying for a network engineer or any other role, these questions will help you demonstrate your knowledge and skills in computer networks.

What is the SMTP protocol?

Increased bandwidth does not mean increasing the transmission speed of the data. It is a network protocol used on IP addresses to automate the process of configuring devices and allow for seamless communication on the network. RIP which stands for Routing Information Protocol is utilized by routers to transfer data from one network to different. It manages routing data by spreading its routing table to all additional routers within the network.

networking basic interview questions

Devices are linked together by a single central connection known as a bus, which serves as a shared communication channel. It covers protocols needed to transport data, such as HTTP, FTP, and SMTP. Deals with the physical aspects of data transmission, such as voltage levels, cable specifications, and signal timing. This sort of IP address is beneficial for devices that require a stable IP address, such as servers or websites.

Introduction to Computer Network Interview Questions and Answers

All devices connected to the internet have unique IP addresses which are used to locate them on the network. The process involves conversion on hostnames into IP addresses. For example, in case the user wants to load some web page (xyz.com), this hostname is converted into an IP address that can be understood networking basic interview questions by the computer in order to load that web page. A Zone-based firewall is an advanced method of stateful firewall. In a stateful firewall, a stateful database is maintained in which the source IP address, destination IP address, source port number, and destination port number are recorded.

CIDR blocks are defined via the combination of an IP address and a subnet mask, enabling the specification of which addresses are included in the block. A subnet is a logical sub-section of a larger network to improve organization, security, and performance. A subnet mask is a 32-bit value that is combined with an IP address to divide a network into smaller sections, known as subnets. Handles the routing and forwarding of data packets throughout the network using IP.

When a single sender transmits data to a single destination, unicast information transfer is very beneficial. When data is transferred from one point to another point, the term ‘unicast’ is employed. The TCP/ IP Model is made up of four protocol layers, i.e., the application layer, transport layer, internet layer, and network access layer. Links can be undirected, which connects nodes in both ways, or directed, which connects one node to another. Links in a network are the connections between individual nodes or collections of nodes. They can have different strengths, directions, and other qualities.

Most Asked Computer Networks Interview Questions

Every line has an upper limit and a lower limit on the frequency of signals it can carry. A protocol is a set of rules that govern all aspects of information communication. A hybrid topology combines two or more network topologies, such as ring, bus, and mesh topologies. For instance, a star-bus hybrid topology combines the properties of both star topology and bus topology. This way, the hybrid topology combines the benefits of many topologies and can be tailored to meet particular requirements.

networking basic interview questions

Networking refers to the interconnection of various computing devices to communicate and exchange information and resources such as data, software, hardware, etc. Different computing devices such as servers, desktops, laptops, smartphones, tablets connected through multiple paths for sending or receiving the data are known as Hosts. Any networking system’s foundation is formed by specialised devices or mediums, also known as Network Devices. Some examples include routers, switches, modems, access points, hubs, and bridges. Networking is essential for offering faster communication, supporting businesses, sharing resources, providing entertainment, etc., in virtually every sphere of life. A Router is a networking device that connects two or more sub-networks or packet-switched networks.

Explain profile in terms of networking concepts

It provides a standard way of thinking about network communication and is widely used as a framework for network design and troubleshooting. In addition, it permits the administrator to configure the trunk links once and have that configuration propagated to all other switches in the network. Further, VTP supports reducing the amount of manual configuration needed for large networks. This is highly designed to ensure that only authorized users and devices can access the network. Moreover, NAC can be used to protect against unauthorized access from both inside and outside of an organization. Moreover, DHCP automates the assignment of IP addresses, subnet masks, default gateways, and other network configuration parameters to network devices.

The practice of linking multiple computers together for the purposes of sharing data, offering technical help, and communicating—especially for business purposes—is known as computer networking. The technology that links several computer systems (placed in various geographic locations) is known as the Internet. The world has undergone a transformation thanks to networking technology, opening up new opportunities for each country’s total development. A network of networks called the Internet enables devices to exchange data and communicate using a communication medium.

Thousands of computers that need a lot of power to run and keep cool make up a server farm. They frequently have backup servers that can take over for primary servers in case they malfunction. A web farm, which consists of server farms and the network switches and/or routers that allow for communication among them, is often collocated.

Such attacks may come in different forms and are done by a group of perpetrators. One common method of doing this is to overload the system server so it cannot anymore process legitimate traffic and will be forced to reset. RIP, short for Routing Information Protocol is used by routers to send data from one network to another. It efficiently manages routing data by broadcasting its routing table to all other routers within the network. It refers to a direct connection between two computers on a network.

The area covered by the network is connected using a wired network, like data cables. The PAN technology allows communication between devices within a range of 1 to 100 meters from the user. The transmission speed is relatively high, and its maintenance is simple and cost-effective. In baseband transmission, the full bandwidth of the cable will be taken by a single signal. Whereas in broadband transmission, multiple signals with multiple frequencies can be sent simultaneously. The ping command is frequently used to troubleshoot network problems.

Moreover, SANs are often used for data backup, disaster recovery, and replication. In addition, it is a protocol used for mapping an IP address to a physical network address, such as a MAC address. Further, ARP is used to enable communication between two devices on a network and is used to convert an IP address into a physical address. A topology is a mathematical structure used to describe the spatial relationships between objects.

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