What is the role of network administrator?
The role of a network administrator is
1. Installation of a new network.
2. Configuring a new network.
3. Maintaining and troubleshooting an existing network.
What are the four major roles of a network administrator?
What is the requirement of dns?
DNS means Domain name Server or Domain name system. Requirement of DNS : DNS helps to convert the ip address into domain name.Domain name into ip address.You cannot remember many website ip address ...
Yes, DNS translates an IP address to a more simple name that's easier to use. However, DNS has expanded beyond just that these days. A network can and should have more than one DNS server. You s...
Default port no. For telnet ___ ? snmp ____? ftp ____?
telnet- 23
ftp-21/20
snmp- 161/162
Telnet = 23
SNMP = 161
FTP= 20 for connection establishment and 21 for Data Transfer.
What is an email client? What is difference between email client and web mail?
An email client, email reader, or more formally mail user agent (MUA), is a computer program used to manage a users email..
1.email client is a client who change to any document in web page which he registered
2.web client is a client who doest be change anything only they were read the data
Email ClientEmail clients download your emails onto your computer. Using a specialized email program such as Outlook Express or Apple Mail has the advantage of giving you complete control over your em...
What is subnetting? Why is it used?
Subnetting means network divide into sub networks. It is used to reduce the network traffic or congestion.
Subnetting is the process of modifying of an IP network into smaller logical IP networks , known as subnets. In this process the address space of a unicast address prefix is divided to allocate th...
How do you perform subnet addressing ?
Subnetting divides one large network into several smaller ones. It adds an intermediate level of hierarchy in IP addressing.
To create or to perform subnet addressing the local address should be divided into a number identifying the physical network and a number identifying the host on the subnet. Then the senders route m...
What is the difference between domain & workgroup?
In a workgroup: All computers are peers; no computer has control over another computer. Each computer has a set of user accounts. To use any computer in the workgroup, you must have an account on th...
Domain can be accessed from anywhere in the world were internet is provided, while workgroup is a small network which can be accessed only if we are in that network.
Along any transmission path from a given source to a given destination, a group of virtual circuits can be grouped together into what is called path.
Such a path is a path which virtual physically possible. The path from Source to Destination cover every Node. It makes virtual circuit.
A bundle of virtual channels which share the same end point is known as virtual path.Each virtual path is identified by its unique virtual path identifier (VPI). All channels within a single path must...
In a ethernet network, between any two points on the network, there can be no more than five network segments or four repeaters, and of those five segments only three of segments can be populated.
5-4-3 rule is a guideline for Ethernet computer networks along with the number of repeaters and segments on shared-access. The rule says that in an network there can be no more than five network segme...
Sending a message to a group is called multicasting, and its routing algorithm is called multicast routing.
Sending one packet of message to several destinations is known as multicast routing and algorithm which defines its route is known as multicast routing algorithm.
It is a system that performs a protocol translation between different electronic mail delivery protocols.
Mail gateway is a means which connect two or more electronic mail system and helps in transfer of message between them.During complex mapping and translation there is a store and forward scheme where ...
What is gateway-to-gateway protocol?
It is a protocol formerly used to exchange routing information between internet core routers.
Gateway-to-Gateway Protocol is similar to the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP).
It is a protocol used for routing datagrams between Internet gateways.Each GGP message has a field header that identifies the message type and the format of the remaining fields.
What is igp (interior gateway protocol)?
It is any routing protocol used within an autonomous system.
Within an autonomous system the interior gateway protocol (IGP) is used to exchange routing information.
There are two types of IGP
1.Distance-vector routing protocol
2.Link-state routing protocol.
Virtual channel is normally a connection from one source to one destination, although multicast connections are also permitted. The other name for virtual channel is virtual circuit.
A virtual channel defines a single point to point connection, identified by its virtual channel identifier.An individual channel can be uniquely identified by its virtual channel and virtual path numb...
What is terminal emulation, in which layer it comes?
Telnet is also called as terminal emulation. It belongs to application layer.
What is terminal server and how to work in a terminal server.
Terminal emulation is the ability to make one computer terminal appear like some other terminal. Terminal emulation is used to give the users the ability to log on and get direct access to legacy pro...
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. Beaconing is used in token ring and fddi networks.
Beaconing is a process which allows the network to render their network problems by them-selfToken ring and FDDI(Fibre Distributed Data Interface) networks make use of this process. It is also a sign...
The network address made available to the transport layer should use a uniform numbering plan
1. In a session 2. In a lan3. In a wan 4. Across lan and wan
Across LANs and WANs.
What services does the internet layer provide?
The internet layer packs data into data packets known as IP datagrams, which contain source and destination address information that is used to forward the datagrams between hosts and across networks....
What are headers and trailers? How are they added and removed?
Headers and trailers are the concepts of OSI model. Headers are information structures which identifies the information that follows, such as a block of bytes in communication. Trailer is the informat...
Dora process is a Service it is a used to dscp ip address automatic update is called Dora process.
Dora process contains in DHCP, first the client searches for the required server by using Discover.
then the server gives a offer, then the client requests for its need, server gives the acknowledge