Without knowledge of the correct IP address, even the physical location of the network cannot be identified. Router: Router is the devices which will be responsible for forwarding data packets. What is a node? I hope I have covered almost all the important networking interview questions in this article. 90) How does dynamic host configuration protocol aid in network administration? Examples of some jobs in networking are networking administer , hardware networking, networking manager and hardware engineer etc. It refers to a direct connection between two computers on a network. Firewalls can be installed just like any other computer software and later can be customized as per the need and have some control over the access and security features. Passwords must be not words that can easily be guessed by hackers, such as dates, names, favorites, etc. 31) What is the purpose of cables being shielded and having twisted pairs? Digital hardware offers flexibility in implementation. The following are some questions you may wish to consider asking when networking with individuals or potential employers. This is one of the easiest to set up and maintain. DNS is the Domain Name System. {loadposition top-ads-automation-testing-tools} What are Hacking Tools? 1. To begin with, here are the ten most important Networking Interview Questions: Q1. If packets are misses then they are just lost, All computers are peers and no computer has control over another computer, Network admin uses one or more computer as a server and provide all accesses, security permission to all other computers in a network, In a Workgroup, each computer maintains their own database. Translating the IP address to names is named as a Reverse lookup. It means that data transmission and reception would be affected because the signal degrades over length. For Example, A computer network … This is termed as Pipelining. Incorrect hardware configuration is also one of those culprits to look into. All network administrators, network analysts, network security, network support engineers will find these questions … That's because host PCs on the Internet can only see the public IP address of the external interface on the computer. 127.0.0.1 is a loopback connection on the Network Interface Card (NIC) and if you are able to ping this server successfully, then it means that the hardware is in a good shape and condition. These kind of signals works with physical values and natural phenomena such as earthquake, frequency, volcano, speed of wind, weight, lighting, etc. Out of these five segments, only three segments can be populated with nodes. Dynamic IP is automatically assigned by the server to the network device. Answer: NIC stands for Network Interface Card. 58) What common software problems can lead to network defects? SMTP is short for Simple Mail Transfer Protocol. A digital signal is a signal that is used to represent data as a sequence of separate values at any point in time. Note: Decapsulation is exactly the opposite of encapsulation. Define Network? One can easily find an answer/solution to whatever he/she doesn’t know with the help of the Internet. It provides useful information about the current TCP/IP settings of a connection. This layer also detects the errors that occurred at Layer 1. c) Network Layer (Layer 3): This layer transfers variable length data sequence from one node to another node in the same network. These ensure that no conflicts are present among internal networks. This is one of the protocols that are used for remote access. 2. Then the message is transmitted to all the devices of the network. Make sure firewalls are setup and configured correctly. Usually, computers which run on the home network belong to a Workgroup. 112) Which measurement unit is used to measure the transmission speed of Ethernet? 101) What is the 5-4-3 rule, and in which architecture is it used? The Network layer is responsible for data routing, packet switching, and control of network congestion. 50) How can you manage a network using a router? Answer: IDEA stands for International Data Encryption Algorithm. Q #50) What is the use of encryption and decryption? You can even put restrictions on what websites are not viewable across the entire network. This includes networking devices, network interfaces, cablings, and connectors. Answer: Encoder is a circuit that uses an algorithm to convert any data or compress audio data or video data for transmission purposes. Switch: Switch will create the dynamic connection and provide information to the requesting port. The number of possible network IDs is 2 raised to 21 or 2,097,152. This type of network is large than a LAN, which is mostly limited to a single building or site. If asked this question, be honest and specific about your future goals, but consider this: A hiring manager wants to know a) if you've set realistic expectations for your career, b) if you have ambition (a.k.a., this interview isn't the first time you’re considering the question… Fast performance with few nodes and very low network traffic. Here are the important reasons for using MAC address: 128) What are the types of MAC Addresses? The length of the Thinnet cable is 185 meters. Authentication is the process of verifying a user's credentials before he can log into the network. Q #15) What is a Proxy Server and how do they protect the computer network? Yes, you can connect two computers, using only one cable. There are several ways to do this. It is a network component that is used to send, receive and forward the electronic information. 16) How does a network topology affect your decision to set a network? Q #2) What does Protocol mean? Encryption is the process of translating information into a code that is unreadable by the user. Clients refer to a workstation that accesses the server. MAC address can be in hexadecimal format. 132) What are the differences between analog and digital signal? This is also the protocol that manages error messages that are used by network tools such as PING. “. Q #10) What is HTTPs and what port does it use? Suppose in DHCP server running network (assigning ip addresses automatically), you connect a Laptop in the same … Ping is a utility program that allows you to check connectivity between network devices on the network. RIP, short for Routing Information Protocol is used by routers to send data from one network to another. The TCP/IP Application layer has three counterparts on the OSI model: 1) Session Layer, 2) Presentation Layer, and 3) Application Layer. Passive Optical Local Area Network (POLAN). What is a network? It is used to configure, control the TCP/IP network interface parameters from CLI i.e. What is a Firewall in Computer Network? CSMA/CA, or Collision Avoidance, will first broadcast intent to send prior to data transmission. Routers send the information in terms of data packets and when these data packets are forwarded from one router to another router then the router reads the network address in the packets and identifies the destination network. It was developed during the early 1970s and is based on specifications, as stated in the IEEE. Windows Firewall” is an inbuilt Microsoft Windows application that comes along with the operating system. 63) What advantages does fiber optics have over other media? TCP messages make their way across the Internet from one computer to another. Without this, no connection can take place. This component comes under the presentation layer. This translation is key in allowing different systems to communicate on the network. All PCs on this network act as individual workstations. Answer: Below are the 3 key elements of the protocol: Q #59) Explain the difference between baseband and broadband transmission? This article is useful for those who are attending the interview on Networking. The physical boundary of Network B. When a computer in the network listen and receive the signal, they are called passive topology. In a network… Hubs perform frame flooding that can be unicast, multicast, or broadcast. 40) What is the disadvantage of a star topology? Answer: SNMP stands for Simple Network Management Protocol. The MAC address stands for Media Access Control Address. Pipelining describes the sequencing of processes. Answer: IEEE stands for the Institute of Electrical and Electronic Engineer. Partial Mesh Topology: In this type of topology, most of the devices are connected almost similarly as full topology. Proxy servers primarily prevent external users who are identifying the IP addresses of an internal network. It is a network protocol used for collecting organizing and exchanging information between network devices. Another drawback is that when there are adjustments and reconfigurations needed to be performed on a particular network, the entire network must be temporarily brought down. For Class A, there are 126 possible networks and 16,777,214 hosts. It keeps track of transmission and sends the segments again if the transmission fails. One major advantage of fiber optics is that it is less susceptible to electrical interference. One major disadvantage of star topology is that once the central Hub or switch gets damaged, the entire network becomes unusable. IP address works at the network layer of OSI model. The full form of EGP is Exterior Gateway Protocol. 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