Common Interview Questions for Computer. Networking and Information Security Majors. Interviewing with companies for IT positions, whether large or small. View lesforgesdessalles.info from INFORMATIO at Davao del Norte State College. Basic Networking Interview Questions with Answers Regardless you. Mar 17, Download basic networking questions with asnwers for interviews. Start learning adhoc wireless networks, backbone networks and protocol for.
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Mar 22, Top Networking Interview Questions & Answers. Details: Last .. 96) What is one basic requirement for establishing VLANs? A VLAN is. Networking Interview Questions updated on Apr 1. Define It is a simple protocol used to exchange information between the routers. What is. Download basic networking interview questions and answers pdf for freshers and experienced which explain all networking concepts and commands ppt.
What is Repeaters? It efficiently manages routing data by broadcasting its routing table to all other routers within the network. The address resolution protocol ARP is used to associate the 32 bit IP address with the 48 bit physical address, used by a host or a router to find the physical address of another host on its network by sending a ARP uery packet that includes the IP address of the receiver. Mohammed javeed. Encryption is the process of translating information into a code that is unreadable by the user. Extranet An extranet is an extended intranet, where certain internal services are made available to known external users or external business partners at remote locations.
It is a unique combination of flexibility,portability,and user-friendly features. The World Wide Web today is a distributed client-server service,in which a client using a browser can access a service using a server.
The service provided is distributed over many locations called web sites. What is Beaconing? The process that allows a network to self-repair networks problems. The stations on the network notify the other stations on the ring when they are not receiving the transmissions.
What is RAID? A method for providing fault tolerance by using multiple hard disk drives. A transport protocol designed by microsoft and IBM for the use on small subnets. The address resolution protocol ARP is used to associate the 32 bit IP address with the 48 bit physical address, used by a host or a router to find the physical address of another host on its network by sending a ARP query packet that includes the IP address of the receiver.
The reverse address resolution protocol RARP allows a host to discover its Internet address when it knows only its physical address. The header should have a minimum length of 20 bytes and can have a maximum length of 60 bytes.
What are major types of networks and explain? Server-based network: What are the important topologies for networks? BUS topology: In this each computer is directly connected to primary network cable in a single line. Inexpensive, easy to install, simple to understand, easy to extend.
STAR topology: In this all computers are connected using a central hub. Can be inexpensive, easy to install and reconfigure and easy to trouble shoot physical problems. RING topology: In this all computers are connected in loop. All computers have equal access to network media, installation can be simple, and signal does not degrade as much as in other topologies because each computer regenerates it.
What is mesh network? A network in which there are multiple network links between computers to provide multiple paths for data to travel. What is difference between baseband and broadband transmission? In a baseband transmission, the entire bandwidth of the cable is consumed by a single signal.
In broadband transmission, signals are sent on multiple frequencies, allowing multiple signals to be sent simultaneously. What is packet filter? Packet filter is a standard router equipped with some extra functionality. The extra functionality allows every incoming or outgoing packet to be inspected. Packets meeting some criterion are forwarded normally. Those that fail the test are dropped. What is traffic shaping? One of the main causes of congestion is that traffic is often busy.
If hosts could be made to transmit at a uniform rate, congestion would be less common. Another open loop method to help manage congestion is forcing the packet to be transmitted at a more predictable rate.
This is called traffic shaping. What is multicast routing? Sending a message to a group is called multicasting, and its routing algorithm is called multicast routing. What is Kerberos? It is an authentication service developed at the Massachusetts Institute of Technology. Kerberos uses encryption to prevent intruders from discovering passwords and gaining unauthorized access to files.
What is passive topology? Example for passive topology - linear bus.
What are the advantages of Distributed Processing? Distributed database c. Faster Problem solving d. Security through redundancy e. Collaborative Processing. Name the factors that affect the reliability of the network? Frequency of failure b. Recovery time of a network after a failure. When a switch is said to be congested? It is possible that a switch receives packets faster than the shared link can accommodate and stores in its memory, for an extended period of time, then the switch will eventually run out of buffer space, and some packets will have to be dropped and in this state is said to congested state.
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The number of host IDs per network ID is 2 raised to 8 minus 2, or Cables that are too long would result in signal loss. This means that data transmission and reception would be affected, because the signal degrades over length.
Software related problems can be any or a combination of the following: This is also the protocol that manages error messages that are used by network tools such as 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 address or device name, such as a computer name.
Peer to peer are networks that does not reply on a server. All PCs on this network act as individual workstations. One major advantage of fiber optics is that is it less susceptible to electrical interference. It also supports higher bandwidth, meaning more data can be transmitted and received.
Signal degrading is also very minimal over long distances. A hub acts as a multiport repeater.
However, as more and more devices connect to it, it would not be able to efficiently manage the volume of traffic that passes through it. A switch provides a better alternative that can improve the performance especially when high traffic volume is expected across all ports. There are three main network protocols supported: For Class A, there are possible networks and 16,, hostsFor Class B, there are 16, possible networks and 65, hostsFor Class C, there are 2,, possible networks and hosts 67 What is the standard color sequence of a straight-through cable?
Is it possible to do this without using a hub or router? Yes, you can connect two computers together using only one cable. A crossover type cable can be use in this scenario.
In this setup, the data transmit pin of one cable is connected to the data receive pin of the other cable, and vice versa. Ipconfig is a utility program that is commonly used to identify the addresses information of a computer on a network.
It can show the physical address as well as the IP address. A straight-through cable is used to connect computers to a switch, hub or router. Servers provide a centralized repository of resources such as printers and files. Clients refers to workstation that access the server. Networking refers to the inter connection between computers and peripherals for data communication. Networking can be done using wired cabling or through wireless link. The main purpose of this is the in the event that one server fails, all processing will continue on with the next server in the cluster.
An anti-virus program must be installed on all servers and workstations to ensure protection. That's because individual users can access any workstation and introduce a computer virus when plugging in their removable hard drives or flash drives.
Ethernet is one of the popular networking technologies used these days. It was developed during the early s and is based on specifications as stated in the IEEE. Ethernet is used in local area networks. In case one workstation on the network suffers a malfunction, it can bring down the entire network. Another drawback is that when there are adjustments and reconfigurations needed to be performed on a particular part of the network, the entire network has to be temporarily brought down as well.
Multicast routing is a targeted form of broadcasting that sends message to a selected group of user, instead of sending it to all users on a subnet. Encryption is the process of translating information into a code that is unreadable by the user. It is then translated back or decrypted back to its normal readable format using a secret key or password. Encryption help ensure that information that is intercepted halfway would remain unreadable because the user has to have the correct password or key for it.
IP addresses are displayed as a series of four decimal numbers that are separated by period or dots. Another term for this arrangement is the dotted decimal format.
An example is Authentication is the process of verifying a user's credentials before he can log into the network. It is normally performed using a username and password. This provides a secure means of limiting the access from unwanted intruders on the network. This is a mode of data exchange wherein two communicating computers do not use IPSec themselves.
Instead, the gateway that is connecting their LANs to the transit network creates a virtual tunnel that uses the IPSec protocol to secure all communication that passes through it.
Analog connections - using conventional telephone lines; Digital connections - using digital-grade telephone lines; switched connections - using multiple sets of links between sender and receiver to move data. In the event that one link fails, there will always be another available.
Mesh topology is actually one of the most fault-tolerant network topology. A large percentage of a network is made up of hardware. Problems in these areas can range from malfunctioning hard drives, broken NICs and even hardware startups.
Incorrectly hardware configuration is also one of those culprits to look into. A common way of dealing with such a problem is to use repeaters and hub, because it will help regenerate the signal and therefore prevent signal loss.
Checking if cables are properly terminated is also a must. Instead of having to visit each client computer to configure a static IP address, the network administrator can apply dynamic host configuration protocol to create a pool of IP addresses known as scopes that can be dynamically assigned to clients. Profiles are the configuration settings made for each user.
A profile may be created that puts a user in a group, for example.
Sneakernet is believed to be the earliest form of networking wherein data is physically transported using removable media, such as disk, tapes. IEEE, or the Institute of Electrical and Electronics Engineers, is an organization composed of engineers that issues and manages standards for electrical and electronic devices. This includes networking devices, network interfaces, cablings and connectors. There are 4 protocols that are being managed by this layer.
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 user.