Top 135 Networking Interview Questions and Answers (2022)

We have compiled the most frequently asked Networking Interview Questions and Answers that will help you to prepare for the Networking basics interview questions that an interviewer might ask you during your interview. In this list of Networking interview questions, we have covered all normally asked basic and advanced interview questions on networking with detailed answers to help you clear the job interview.

The below tilt covers 130+ authoritative interview questions for Networking for freshers candidates arsenic well as Networking interview questions for know. This detail guidebook of Network Engineer consultation questions will help you to crack your Job interview easily .

Network Engineer Interview Questions and Answers

1) What is a Link?
A link refers to the connectivity between two devices. It includes the type of cables and protocols used for one device to be able to communicate with the other .
2) What are the layers of the OSI reference model?
There are 7 OSI layers : 1 ) Physical Layer, 2 ) Data Link Layer, 3 ) Network Layer, 4 ) Transport Layer, 5 ) Session Layer, 6 ) Presentation Layer, and 7 ) Application Layer .
3) What is the backbone network?
A spine network is a centralize infrastructure that is designed to distribute different routes and data to assorted networks. It besides handles the management of bandwidth and multiple channels.

4) What is a LAN?

LAN networkLAN network

LAN stands for Local Area Network. It refers to the connection between computers and early network devices that are located within a small physical localization .
5) What is a node?
A node refers to a compass point or joint where a connection takes place. It can be a calculator or device that is part of a network. Two or more nodes are needed to form a network connection .
6) What are routers?


Routers can connect two or more net segments. These are intelligent network devices that store information in its rout tables, such as paths, hops, and bottlenecks. With this information, they can determine the best way for data transfer. Routers operate at the OSI Network Layer .
7) What is a point to point link?
It refers to a mastermind association between two computers on a network. A item to point connection does not need any other network devices other than connecting a cable television to the NIC cards of both computers .
8) What is anonymous FTP?
anonymous FTP is a way of granting drug user access to files in public servers. Users that are allowed access to data in these servers do not need to identify themselves, but alternatively, log in as an anonymous guest .
9) What is a subnet mask?
A subnet mask is combined with an IP address to identify two parts : the gallop network address and the master of ceremonies address. Like an IP address, a subnet mask is made up of 32 bits .

10) What is the maximum length allowed for a UTP cable?
A single segment of UTP cable television has an allowable length of 90 to 100 meters. This limitation can be overcome by using repeaters and switches.

11) What is data encapsulation?
Data encapsulation is the process of breaking down information into smaller, accomplishable chunks before it is transmitted across the network. In this summons that the reservoir and finish addresses are attached to the headers, along with parity checks .
12) Describe Network Topology
Network Topology refers to the layout of a calculator network. It shows how devices and cables are physically laid out, american samoa well as how they connect .
13) What is a VPN?
VPN means virtual Private Network, a engineering that allows a fasten burrow to be created across a network such as the Internet. For exercise, VPNs allow you to establish a impregnable dial-up association to a outback server .
14) Briefly describe NAT
NAT is Network Address Translation. This is a protocol that provides a manner for multiple computers on a park network to share a individual connection to the Internet .
15) What is the job of the Network Layer under the OSI reference model?
The Network layer is responsible for data routing, packet interchange, and control of network congestion. Routers operate under this layer .
16) How does a network topology affect your decision to set a network?
Network topology dictates what media you must use to interconnect devices. It besides serves as a basis on what materials, connectors, and terminations that is applicable for the setup .
17) What is RIP?
RIP, light 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 early routers within the network. It determines the network distance in units of hops .
18) What are the different ways of securing a computer network?
There are several ways to do this. Install a authentic and update anti-virus program on all computers. Make certain firewalls are frame-up and configured correctly. User authentication will besides help a fortune. All these combined would make a highly secured network .
19) What is NIC?
NIC is short for Network Interface Card. This is a peripheral menu that is attached to a personal computer in order to connect to a network. Every NIC has its own MAC address that identifies the personal computer on the network .
20) What is WAN?

WAN networkWAN network

WAN stands for Wide Area Network. It is an interconnection of computers and devices that are geographically dispersed. It connects networks that are located in different regions and countries .
21) What is the importance of the OSI Physical Layer?
The physical layer does the conversion from data bits to the electrical signal, and frailty versa. This is where net devices and cable types are considered and frame-up.

22) How many layers are there under TCP/IP?
There are four layers : 1 ) The Network Layer, 2 ) Internet Layer, 3 ) Transport Layer, and 4 ) Application Layer .

TCP/IP LayersTCP/IP Layers

23) What are proxy servers, and how do they protect computer networks?
Proxy servers chiefly prevent external users who are identifying the IP addresses of an inner network. Without cognition of the discipline IP address, even the physical location of the network can not be identified. proxy servers can make a network virtually inconspicuous to external users .
24) What is the function of the OSI Session Layer?
This layer provides the protocols and means for two devices on the network to communicate with each early by holding a school term. This includes setting up the school term, managing data exchange during the school term, and tear-down action upon termination of the school term .
25) What is the importance of implementing a Fault Tolerance System?
A fault allowance system ensures continuous data handiness. This is done by eliminating a single point of bankruptcy.

26) What does 10Base-T mean?
The 10 refers to the data transfer pace. In this case, it is 10Mbps. The news Base refers to baseband, as opposed to broadband .
27) What is a private IP address?
individual IP addresses are assigned for habit on intranets. These addresses are used for inner networks and are not routable on external public networks. These ensure that no conflicts are present among internal networks. At the same clock, the same range of secret IP addresses is reclaimable for multiple intranets since they do not “ see ” each early .
28) What is NOS?
NOS, or Network Operating System, is specialized software. The main job of this software is to provide network connectivity to a computer in order to communicate with other computers and connect devices .
29) What is DoS?
DoS, or Denial-of-Service attack, is an attempt to prevent users from being able to access the Internet or any other network services. such attacks may come in different forms and are done by a group of perpetrators. One common method acting of doing this is to overload the system server so it can not anymore process legalize dealings and will be forced to reset .
30) What is OSI, and what role does it play in computer networks?
OSI ( open Systems Interconnect ) serves as a character model for data communication. It is made up of 7 layers, with each layer defining a particular aspect of how network devices connect and commune with one another. One layer may deal with the forcible media used, while another layer dictates how data is transmitted across the network .
31) What is the purpose of cables being shielded and having twisted pairs?
The basal purpose of this is to prevent crosstalk. Crosstalk ’ mho are electromagnetic interferences or noise that can affect data being transmitted across cables .
32) What is the advantage of address sharing?
By using address translation rather of routing, address sharing provides an built-in security benefit. That ’ south because host PCs on the Internet can alone see the public IP savoir-faire of the external interface on the calculator. rather, it provides address translation and not the private IP addresses on the internal network .
33) What are MAC addresses?
MAC, or Media Access Control, uniquely identifies a device on the network. It is besides known as a physical address or an Ethernet address. A MAC address is made up of 6-byte parts .
34) What is the equivalent layer or layers of the TCP/IP Application layer in terms of the OSI reference model?
The TCP/IP Application layer has three counterparts on the OSI model : 1 ) Session Layer, 2 ) Presentation Layer, and 3 ) Application Layer .
35) How can you identify the IP class of a given IP address?
By looking at the first octet of any given IP address, you can identify whether it ’ s Class A, B, or C. If the first octet begins with a 0 bite, that address is Class A. If it begins with bits 10 then that address is a class B address. If it begins with 110, then it ’ s a Class C network .
36) What is the main purpose of OSPF?
OSPF, or Open Shortest Path First, is a link-state spread-eagle protocol that uses routing tables to determine the best possible path for data substitution .
37) What are firewalls?
Firewalls serve to protect an internal net from external attacks. These external threats can be hackers who want to steal data or computer viruses that can wipe out data in an instant. It besides prevents other users from external networks from gaining access to the secret network.

38) Describe star topology
Star regional anatomy consists of a cardinal hub that connects to nodes. This is one of the easiest to set up and keep .

Star TopologyStar Topology

Advantages :
here are pros/benefits of originate topology :

  • Easy to troubleshoot, set up, and modify.
  • Only those nodes are affected, that has failed. Other nodes still work.
  • Fast performance with few nodes and very low network traffic.
  • In Star topology, addition, deletion, and moving of the devices are easy.

Disadvantages :
here are cons/drawbacks of using star :

  • If the Hub or concentrator fails, attached nodes are disabled.
  • The cost of installation of star topology is costly.
  • Heavy network traffic can sometimes slow the bus considerably.
  • Performance depends on the Hub’s capacity
  • A damaged cable or lack of proper termination may bring the network down.

39) What are gateways?
Gateways provide connectivity between two or more network segments. It is normally a computer that runs the gateway software and provides translation services. This translation is winder in allowing different systems to communicate on the network .
40) What is the disadvantage of a star topology?
One major disadvantage of star topology is that once the central Hub or switch gets damaged, the entire network becomes unserviceable .
41) What is SLIP?
SLIP, or consecutive Line Interface Protocol, is an old protocol developed during the early UNIX days. This is one of the protocols that are used for remote control entree .
42) Give some examples of private network addresses. with a subnet mask of with subnet mask of with subnet mask of
43) What is tracert?
Tracert is a window utility platform that can use to trace the road taken by data from the router to the destination network. It besides shows the number of hops taken during the integral transmission road .
44) What are the functions of a network administrator?
A network administrator has many responsibilities that can be summarized into 3 key functions : facility of a network, a configuration of network settings, and maintenance/troubleshooting of networks .
45) What is the main disadvantage of a peer to peer network?
Accessing the resources that are shared by one of the workstations on the network takes a performance hit .
46) What is a Hybrid Network?
A hybrid network is a net frame-up that makes use of both client-server and peer-to-peer computer architecture .
47) What is DHCP?
DHCP is short for Dynamic Host Configuration Protocol. Its main job is to assign an IP savoir-faire to devices across the network mechanically. It first checks for the following available address not so far taken by any device, then assigns this to a network device .
48) What is the main job of the ARP?
The main task of the ARP or Address Resolution Protocol is to map a know IP cover to a MAC layer address .
49) What is TCP/IP?
TCP/IP is short for Transmission Control Protocol / Internet Protocol. This is a jell of protocol layers that is designed to make data exchange possible on different types of calculator networks, besides known as a heterogeneous network .
50) How can you manage a network using a router?
Routers have a built-in console that lets you configure different settings, like security and datum log. You can assign restrictions to computers, such as what resources it is allowed access or what particular time of the day, they can browse the Internet. You can even put restrictions on what websites are not viewable across the entire network .
51) What protocol can be applied when you want to transfer files between different platforms, such as UNIX systems and Windows servers?
Use FTP ( File Transfer Protocol ) for file transfers between such unlike servers. This is possible because FTP is platform-independent .
52) What is the use of a default gateway?
Default gateways provide means for the local anesthetic networks to connect to the external network. The default gateway for connecting to the external network is normally the address of the external router port .
53) What can be considered as good passwords?
full passwords are made up of not precisely letters, but by combining letters and numbers. A password that combines uppercase and lowercase letters is favorable than one that uses all upper berth character or all lower-case letters. Passwords must be not words that can easily be guessed by hackers, such as dates, names, favorites, etc. Longer passwords are besides better than short ones .
54) What is the proper termination rate for UTP cables?
The proper result for unshielded wind couple network cable television is 100 ohm .
55) What is netstat?
Netstat is a command-line utility program. It provides useful information about the current TCP/IP settings of a connection .
56) What is the number of network IDs in a Class C network?
For a Class C net, the number of available Network ID bits is 21. The number of potential network IDs is 2 raised to 21 or 2,097,152. The numeral of host IDs per network ID is 2 raised to 8 minus 2, or 254 .
57) What happens when you use cables longer than the prescribed length?
Cables that are excessively farseeing would result in signal loss. It means that data infection and reception would be affected because the sign degrades over distance .
58) What common software problems can lead to network defects?
Software refer problems can be any or a combination of the pursuit :

  • Client-server problems
  • Application conflicts
  • Error in configuration
  • Protocol mismatch
  • Security issues
  • User policy and rights issues

59) What is ICMP?
ICMP is an Internet Control Message Protocol. It provides message and communication for protocols within the TCP/IP smokestack. This is besides the protocol that manages error messages that are used by net tools such as ping .
60) What is Ping?
Ping is a utility program that allows you to check connectivity between network devices on the network. You can ping a device by using its IP cover or device name, such as a computer name .
61) What is peer to peer?

P2P NetworkP2P Network

Peer to peer ( P2P ) are networks that do not rely on a waiter. All PCs on this network act as individual workstations .
62) What is DNS?
DNS is the Domain Name System. The chief function of this net service is to provide host names to TCP/IP address resolving power .
63) What advantages does fiber optics have over other media?
One major advantage of fiber optics is that it is less susceptible to electric interference. It besides supports higher bandwidth, meaning more data can be transmitted and received. Signal degrade is besides very minimal over long distances .
64) What is the difference between a hub and a switch?
hera is the major dispute between Hub and substitution :

Hub Switch
A hub operates on the physical layer. A switch operates on the data link layer.
Hubs perform frame flooding that can be unicast, multicast, or broadcast. It performs broadcast, then the unicast and multicast as needed.
Just a singular domain of collision is present in a hub. Varied ports have separate collision domains.
The transmission mode is Half-duplex The transmission mode is Full duplex
Hubs operate as a Layer 1 device per the OSI model. Network switches help you to operate at Layer 2 of the OSI model.
To connect a network of personal computers should be joined through a central hub. Allow connecting multiple devices and ports.
Uses electrical signal orbits Uses frame & packet
Does not offer Spanning-Tree Multiple Spanning-Tree is possible
Collisions occur mostly in setups using hubs. No collisions occur in a full-duplex switch.
Hub is a passive device A switch is an active device
A network hub can’t store MAC addresses. Switches use CAM (Content Accessible Memory) that can be accessed by ASIC (Application Specific Integrated Chips).
Not an intelligent device Intelligent device
Its speed is up to 10 Mbps 10/100 Mbps, 1 Gbps, 10 Gbps
Does not use software Has software for administration

65) What are the different network protocols that are supported by Windows RRAS services?
There are three main network protocols supported : NetBEUI, TCP/IP, and IPX .
66) What are the maximum networks and hosts in class A, B, and C network?
For Class A, there are 126 possible networks and 16,777,214 hosts. For class B, there are 16,384 possible networks and 65,534 hosts. For Class C, there are 2,097,152 possible networks and 254 hosts
67) What is the standard color sequence of a straight-through cable?
Orange/white, orange, green/white, blue, blue/white, green, brown/white, embrown.

68) What protocols fall under the Application layer of the TCP/IP stack?
The take after are the protocols under the TCP/IP Application level : FTP, TFTP, Telnet, and SMTP .
69) You need to connect two computers for file sharing. Is it possible to do this without using a hub or a router?
Yes, you can connect two computers, using only one cable. A crossing type cable can be used in this scenario. In this setup, the data air peg of one cable is connected to the data receive pin of the early cable, and vice versa .
70) What is ipconfig?
Ipconfig is a utility program that is normally used to identify the addresses information of a calculator on a network. It can show the physical address equally well as the IP address .
71) What is the difference between a straight-through and crossover cable?
A straight-through cable is used to connect computers to a switch, hub, or router. A crossing cable is used to connect two similar devices, such as a personal computer to personal computer or Hub, to the Hub .
72) What is the client/server?
Client/server is a type of network wherein one or more computers act as servers. Servers provide a centralize repository of resources such as printers and files. Clients refer to a workstation that accesses the server .
73) Describe networking.
Networking refers to the interconnection between computers and peripherals for data communication. network can be done using wire cable or through a radio receiver link .
74) When you move the NIC cards from one PC to another PC, does the MAC address gets transferred as well?
Yes, that ’ sulfur because MAC addresses are hard-wired into the NIC circuitry, not the personal computer. This besides means that a personal computer can have a different MAC address when another one replaced the NIC tease .
75) Explain clustering support
Clustering support refers to the ability of a network operating system to connect multiple servers in a fault-tolerant group. The chief purpose of this is the if one server fails, all processing will continue with the following server in the bunch .
76) Where is the best place to install an Anti-virus program?
An anti-virus program must be installed on all servers and workstations to ensure protection. That ’ second because individual users can access any workstation and introduce a computer virus. You can plug in their removable unvoiced drives or flash drives .
77) Describe Ethernet .
Ethernet is one of the democratic network technologies used these days. It was developed during the early on 1970s and is based on specifications, as stated in the IEEE. Ethernet is used in local anesthetic area networks .
78) What are some drawbacks of implementing a ring topology?
In font one workstation on the network suffers a malfunction, it can bring down the integral network. Another drawback is that when there are adjustments and reconfigurations needed to be performed on a particular net, the entire net must be temporarily brought down .
79) What is the difference between CSMA/CD and CSMA/CA?
CSMA/CD, or Collision Detect, retransmits data frames whenever a collision occurred. CSMA/CA, or Collision Avoidance, will first broadcast purpose to send prior to data infection .
80) What is SMTP?
SMTP is short for childlike Mail Transfer Protocol. This protocol deals with all home mail and provides the necessary mail delivery services on the TCP/IP protocol stack .
81) What is multicast routing?
Multicast rout is a target mannequin of circulate that sends a message to a selected group of the exploiter rather of sending it to all users on a subnet .
82) What is the importance of Encryption on a network?
encoding is the process of translating information into a code that is indecipherable by the exploiter. It is then translated rear or decrypted back to its normal clear format using a clandestine key or password. encoding ensures that information that is intercepted center would remain indecipherable because the drug user must have the compensate password or key for it .
83) How are IP addresses arranged and displayed?
IP addresses are displayed as a serial of four decimal numbers that are separated by period or dots. Another term for this placement is the dotted-decimal format. An model is
84) Explain the importance of authentication.
authentication is the march of verifying a exploiter ’ south credentials before he can log into the network. It is normally performed using a username and password. This provides a batten means of limiting access from undesirable intruders on the network .
85) What is meaning by tunnel mode?
This is a mode of data switch over wherein two communicating computers do not use IPsec themselves. rather, the gateway that is connecting their local area network to the transit network creates a virtual tunnel. so, it uses the IPsec protocol to secure all communication that passes through it .
86) What are the different technologies involved in establishing WAN links?

  • Analog connections – using conventional telephone lines
  • Digital connections – using digital-grade telephone lines
  • Switched connections – using multiple sets of links between the sender and receiver to move data.

87) Explain Mesh Topology
The enmesh topology has a singular net invention in which each computer on the net connects to every other. It is developing a P2P ( point-to-point ) connection between all the devices of the network. It offers a high level of redundancy, so even if one network cable fails, data calm has an alternative path to reach its destination .
Types of Mesh Topology:
Partial Mesh Topology: In this type of regional anatomy, most of the devices are connected about similarly as wax topology. The only dispute is that few devices are connected with just two or three devices .

Partially Connected Mesh TopologyPartially Connected Mesh Topology

Full Mesh Topology: In this topology, every node or device are immediately connected with each other .

Fully Connected Mesh TopologyFully Connected Mesh Topology

88) When troubleshooting computer network problems, what common hardware-related problems can occur?
A bombastic share of a network is made up of hardware. Problems in these areas can range from malfunctioning hard drives, break NICs, and even hardware startups. Incorrect hardware configuration is besides one of those culprits to look into .
89) How can you fix signal attenuation problems?
A common way of dealing with such a problem is to use repeaters and hubs because it will help regenerate the signal and therefore prevent signal loss. Checking if cables are properly terminated is besides a must .
90) How does dynamic host configuration protocol aid in network administration?
alternatively of having to visit each node computer to configure a electrostatic IP address, the network administrator can apply moral force host configuration protocol to create a pool of IP addresses known as scopes that can be dynamically assigned to clients .
91) Explain profile in terms of networking concepts
Profiles are the configuration settings made for each user. A visibility may be created that puts a exploiter in a group, for exercise .
92) What is sneakernet?
Sneakernet is believed to be the earliest form of networking wherein data is physically transported using removable media, such as phonograph record, tapes .
93) What is the role of the IEEE in computer networking?
IEEE, or the Institute of Electrical and Electronics Engineers, is an organization composed of engineers that issues and manages standards for electric and electronic devices. This includes network devices, network interfaces, cablings, and connectors .
94) What protocols fall under the TCP/IP Internet Layer?
There are 4 protocols that are being managed by this layer. These are ICMP, IGMP, IP, and ARP .
95) When it comes to networking, what are rights?
Rights refer to the authorized permission to perform specific actions on the network. Each user on the network can be assigned individual rights, depending on what must be allowed for that exploiter .
96) What is one basic requirement for establishing VLANs?
A VLAN is required because at the switch grade. There is only one broadcast knowledge domain. It means whenever a new drug user is connected to switch. This data is spread throughout the net. VLAN on switch helps to create a break broadcast world at the switch tied. It is used for security purposes .
97) What is IPv6?
IPv6, or Internet Protocol version 6, was developed to replace IPv4. At present, IPv4 is being used to control internet dealings but is expected to get saturated in the approximate future. IPv6 was designed to overcome this limit .
98) What is the RSA algorithm?
RSA is abruptly for the Rivest-Shamir-Adleman algorithm. It is the most normally used public-key encoding algorithm in use today .
99) What is mesh topology?
Mesh topology is a setup wherein each device is connected immediately to every other device on the network. consequently, it requires that each device has at least two network connections .
100) what is the maximum segment length of a 100Base-FX network?
The maximum allowable distance for a net section using 100Base-FX is 412 meters. The maximum length for the entire network is 5 kilometers .
101) What is the 5-4-3 rule, and in which architecture is it used?
The 5-4-3 rule is used in 10Base2 and 10Base5 Ethernet architectures. In this rule, there can be a maximum of five segments in a network connected with four repeaters. Out of these five segments, only three segments can be populated with nodes .
102) What is the difference between TCP and UDP?
here are some major differences between TCP and UDP protocols :

It is a connection-oriented protocol. It is a connectionless protocol.
TCP reads data as streams of bytes, and the message is transmitted to segment boundaries. UDP messages contain packets that were sent one by one. It also checks for integrity at the arrival time.
TCP messages make their way across the Internet from one computer to another. It is not connection-based, so one program can send lots of packets to another.
TCP rearranges data packets in the specific order. UDP protocol has no fixed order because all packets are independent of each other.
The speed for TCP is slower. UDP is faster as error recovery is not attempted.
Header size is 20 bytes The header size is 8 bytes.
TCP is heavy-weight. TCP needs three packets to set up a socket connection before any user data can be sent. UDP is lightweight. There are no tracking connections, ordering of messages, etc.
TCP does error checking and also makes error recovery. UDP performs error checking, but it discards erroneous packets.
Acknowledgment segments No Acknowledgment segments
Using handshake protocol like SYN, SYN-ACK, ACK No handshake (so connectionless protocol)
TCP is reliable as it guarantees delivery of data to the destination router. The delivery of data to the destination can’t be guaranteed in UDP.
TCP offers extensive error checking mechanisms because it provides flow control and acknowledgment of data. UDP has just a single error checking mechanism that is used for checksums.

103) What are the important elements of the protocol?
here, are three most authoritative elements of the protocol :

  • Syntax: It is the format of the data. It is an order the data is displayed.
  • Semantics: It describes the meaning of the bits in each section.
  • Timing: What time the data is to be sent and how fast it is to be sent.

104) What is the maximum segment length of a 100Base-FX network?
The maximum duration for a net section using 100Base-FX is 412 meters .
105) What is a Decoder?
The decoder is a type of tour that converts the encode datum to its original format. It besides converts the digital sign into an analogue sign .
106) What is Brouter?
Brouter is besides known as Bridge Router. It is a device that acts as both a bridge and a router. As a bridge can forwards data between the networks. It besides routes the data to specified systems within a network .
107) How to use VPN?
By using a virtual Private Network ( VPN ), users can connect to the constitution ’ south network. corporate companies, educational institutions, politics offices .
108) Why the standard OSI model is known as 802.xx?
The OSI exemplar was started in February 1980. In 802.XX, ’ 80 ’ stands for the year 1980, and ‘ 2 ’ represents the calendar month of February .
109) What is NVT (Network Virtual Terminal)?
NVT is a set of pre-defined rules to very simple virtual terminal interaction. This terminal helps you to start a Telnet session .
110) What is the source route?
The source route is a succession of IP addresses that helps you to identify the route a datagram. You can include the source route in the IP datagram header .
111) Explain the term Pipelining
Pipelining describes the sequence of processes. When any modern tax begins before an ongoing undertaking is finished, it is called sequence .
112) Which measurement unit is used to measure the transmission speed of Ethernet?
The transmission focal ratio of Ethernet is by and large measured in Mbps .
113) What is the maximum length of Thinnet cable?
The length of the Thinnet cable is 185 meters .
114) Which cable is also called as the RG8 cable?
Thicknet cable is besides called as the RG8 cable .
115) Is coaxial cable still used in the computer network?
No, present, coaxial cable no longer used in a computer network .
116) Which cable uses the RJ11 connector?
Most of the call cable uses the RJ11 connection .
117) Explain Multi-homed Host
It is a host that has multiple network interfaces that multiple IP addresses is called a Multi-homed Host .
118) Explain EGP
The full form of EGP is Exterior Gateway Protocol. It is the protocol of the routers. It is the neighboring autonomous systems that help you to identify the set of networks that you will able to reach within or via each mugwump arrangement .
119) Explain the term Passive Topology
When a computer in the network heed and receive the signal, they are called passive voice topology .
120) What is the use of a Pseudo TTY?
It is a false terminal which allows you external machines to connect through Telnet or log in. Without this, no connection can take identify .
121) Explain Redirector
Redirector is a kind of software which intercepts file or prints I/O requests and translates them into network requests. This part comes under the presentation layer .
122) What Is TCP Three-Way Handshake?

TCP Three-Way HandshakeTCP Three-Way Handshake

tripartite handshake or a transmission control protocol 3-way handshake is a serve that is used in a TCP/IP network to make a connection between the server and node. It is a three-step process that requires both the client and server to exchange synchronization and acknowledgment packets before the real data communication process starts .
123) What is a Hamming code?
Hamming code is a lining code that is useful for error detection up to two immediate bit errors. It is capable of single-bit errors .
In Hamming code, the source encodes the message by adding pleonastic bits in the message. These pleonastic bits are by and large inserted and generated at certain positions in the message to accomplish the error signal detection and correction march .
124) What is the Application of Hamming code?
here are some common applications of using Hemming code :

  • Satellites
  • Computer Memory
  • Modems
  • PlasmaCAM
  • Open connectors
  • Shielding wire
  • Embedded Processor

125) What are the benefits of the Hamming code?
here, are important benefits of Hamming code

  • The Hamming code method is effective on networks where the data streams are given for the single-bit errors.
  • Hamming code not only provides the detection of a bit error but also helps you to indent bit containing error so that it can be corrected.
  • The ease of use of hamming codes makes it suitable for use in computer memory and single-error correction.

126) What is a MAC Address?
MAC address is a singular identifier that is assigned to a NIC ( Network Interface Controller/ Card ). It consists of a 48 bit or 64-bit address, which is associated with the network arranger. MAC address can be in hexadecimal format. The full form of MAC address is Media Access Control address .
127) Why Use MAC Address?
hera are the important reasons for using MAC address :

  • It provides a secure way to find senders or receivers in the network.
  • MAC address helps you to prevent unwanted network access.
  • MAC address is a unique number. Hence it can be used to track the device.
  • Wi-Fi networks at the airport use the MAC address of a specific device in order to identify it.

128) What are the types of MAC Addresses?
here are the authoritative types of MAC addresses :

  • Universally Administered AddressUAA(Universally Administered Address) is the most used type of MAC address. It is given to the network adapter at the time of manufacturing.
  • Locally Administered AddressLAA (Locally Administered Address) is an address that changes the MAC address of the adapter. You may assign this address to a device used by network administrator.

129) What are the important differences between MAC address and IP address
here, are some remainder between MAC and IP address :

MAC IP address
The MAC address stands for Media Access Control Address. IP address stands for Internet Protocol Address.
It consists of a 48-bit address. It consists of a 32-bit address.
MAC address works at the link layer of the OSI model. IP address works at the network layer of OSI model.
It is referred to as a physical address. It is referred to as a logical address.
You can retrieve the MAC address of any device using ARP protocol. You can retrieve the MAC address of any device RARP protocol.
Classes are not used in MAC address. In IP, IPv4 uses A, B, C, D, and E classes.

130) What is an Analog Signal?

Analog Signal

Analog signal is a continuous sign in which one time-varying quantity represents another time-based variable. These kind of signals works with physical values and natural phenomena such as earthquake, frequency, vent, rush of wind, weight unit, lighting, etc .
131) What is a Digital Signal?

Digital SignalDigital Signal

A digital bespeak is a signal that is used to represent data as a sequence of offprint values at any point in fourth dimension. It can only take on one of a sterilize count of values. This type of signal represents a veridical number within a changeless roll of values .
132) What are the differences between analog and digital signal?
here are the chief differences between Analog and Digital Signal :

Analog Digital
An analog signal is a continuous signal that represents physical measurements. Digital signals are time separated signals which are generated using digital modulation.
It is denoted by sine waves It is denoted by square waves.
It uses a continuous range of values that help you to represent information. The Digital signal uses discrete 0 and 1 to represent information.
The analog signal bandwidth is low The digital signal bandwidth is high.
Analog hardware never offers flexible implementation. Digital hardware offers flexibility in implementation.
It is suited for audio and video transmission. It is suited for Computing and digital electronics.
The Analog signal doesn’t offer any fixed range. Digital signal has a finite number, i.e., 0 and 1.

133) What is MAN?

MAN networkMAN network

A Metropolitan Area Network or MAN is consisting of a calculator network across an entire city, college campus, or a small region. This type of network is big than a LAN, which is by and large limited to a one build or site. Depending upon the type of shape, this type of network allows you to cover an area from several miles to tens of miles .
134) What is Modem?
A modem ( modulator-demodulator ) is a device that modulates an analogue signal to digital data. It besides decodes carrier signals to demodulates the air data .
The main target of the Modem is to produce a signal that can be transmitted easily and decoded to reproduce the digital datum in its original form. Modems are besides used for transmitting analogue signals, from Light Emitting Diodes ( LED ) to radio .


135) What are the advantages of a Modem?
here, are pros/advantage of Modem :

  • More useful in connecting LAN with the Internet
  • Speed depends on the cost
  • The Modem is the most widely used data communication roadway.
source :
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