Why we use DNS and whats DNS do ?
DNS is used to resolve the names of websites into the IP addresses of the web servers on which the site is hosted. Without DNS we would have had to type the IP address of the website we wanted to visit, rather than it's Fully Qualified Domain Name.
What DHCP do ?
dhcp provides a framework for passing configuration information to hosts on a TCP/IP network. DHCP consists of two components: a protocol for delivering host-specific configuration parameters from a DHCP server to a host and a mechanism for allocation of network address to hosts.
Whats WINS do ?
WINS is a service run on Windows NT servers to provide Windows clients a way to find other Windows computers. WINS (Windows Internet Naming Service) resolves Windows network computer names (also known as NetBIOS names) to Internet IP addresses, allowing Windows computers on a network to easily find and communicate with each other.
Whats Proxy mean and why we use it ?
A server that sits between a client application, such as a Web browser, and a real server. It intercepts all requests to the real server to see if it can fulfill the requests itself. If not, it forwards the request to the real server. a)Improve Performance b)Filter Requests
Whats the difference between ftp and smtp ?
Both are the networking protocols, we use FTP to transfer files and SMTP for sending mails.
How to join computer in domain/network ?
XP system properties, computer name, change (domain name instead of workgroup)
How you will check ur network card working ?
Simply by accessing the network (using ping utility) (if someone have other thought please share it)
How to check system information / Ram/Processor etc in windows 2000 ?
By running msinfo32.exe ?
Expalin each Layer of OSI model in simple words ?
DNS is used to resolve the names of websites into the IP addresses of the web servers on which the site is hosted. Without DNS we would have had to type the IP address of the website we wanted to visit, rather than it's Fully Qualified Domain Name.
What DHCP do ?
dhcp provides a framework for passing configuration information to hosts on a TCP/IP network. DHCP consists of two components: a protocol for delivering host-specific configuration parameters from a DHCP server to a host and a mechanism for allocation of network address to hosts.
Whats WINS do ?
WINS is a service run on Windows NT servers to provide Windows clients a way to find other Windows computers. WINS (Windows Internet Naming Service) resolves Windows network computer names (also known as NetBIOS names) to Internet IP addresses, allowing Windows computers on a network to easily find and communicate with each other.
Whats Proxy mean and why we use it ?
A server that sits between a client application, such as a Web browser, and a real server. It intercepts all requests to the real server to see if it can fulfill the requests itself. If not, it forwards the request to the real server. a)Improve Performance b)Filter Requests
Whats the difference between ftp and smtp ?
Both are the networking protocols, we use FTP to transfer files and SMTP for sending mails.
How to join computer in domain/network ?
XP system properties, computer name, change (domain name instead of workgroup)
How you will check ur network card working ?
Simply by accessing the network (using ping utility) (if someone have other thought please share it)
How to check system information / Ram/Processor etc in windows 2000 ?
By running msinfo32.exe ?
Expalin each Layer of OSI model in simple words ?
The Physical Layer represents your network card, cabeling, etc.
The Data Link Layer controls de physical layer and corrects any errors it detects in transmission.
The Network Layer defines network topology and provides, among other features, routing.
The Transport Layer is responsible for establishing, maintaining and terminating communication with other network devices and ensures data delivery.
The Session Layer manages flow control over the data beeing sent and received. you can think of it as the synchronization layer.
The Presentation Layer prepares the data for the layers above and below it. it makes sure the data beeing passed through is, let's call it, "universal" or "platform independent".
The Application Layer represents the service making use of the network. (usually the program the user is interacting with) Think telnet or ftp.
Explain the difference between Hub & Switch ?
HUB works on Physical layer where as SWITCH works on data link layer, HUB based networks are on one collision domain where as in Switch based network switch divides networks into multiple collision domains. Switch also maintains MAC address tables.
When a system not communicating on network or with any other system whats the possibilities you will check? please list all possibilities.
Firstly, I will check the LAN cable.
When somebody not receiving any emails what the possibilities you will check?
Check that the network you are connecting is in your reach and you can make connection on concerned ports.
Whats the difference between Virus and Spyware ?
Virus usually spread by themselves while spyware don't.
How u check ur own ip address?
ipconfig on windows(NT plateform) winipcfg for win9x clients and ifconfig on *nix.
How you check the ip addresses of all computers on network ?
(No sure about it) Use a program called angry ip scanner.
What is PING ? when we use it and why ?
Ping is a utility to determine whether a specific IP address is accessible. It works by sending a packet to the specified address and waiting for a reply. PING is used primarily to troubleshoot network connections. It is often believed that "Ping" is an abbreviation for Packet Internet Groper.
What is Trace route ?
The Data Link Layer controls de physical layer and corrects any errors it detects in transmission.
The Network Layer defines network topology and provides, among other features, routing.
The Transport Layer is responsible for establishing, maintaining and terminating communication with other network devices and ensures data delivery.
The Session Layer manages flow control over the data beeing sent and received. you can think of it as the synchronization layer.
The Presentation Layer prepares the data for the layers above and below it. it makes sure the data beeing passed through is, let's call it, "universal" or "platform independent".
The Application Layer represents the service making use of the network. (usually the program the user is interacting with) Think telnet or ftp.
Explain the difference between Hub & Switch ?
HUB works on Physical layer where as SWITCH works on data link layer, HUB based networks are on one collision domain where as in Switch based network switch divides networks into multiple collision domains. Switch also maintains MAC address tables.
When a system not communicating on network or with any other system whats the possibilities you will check? please list all possibilities.
Firstly, I will check the LAN cable.
When somebody not receiving any emails what the possibilities you will check?
Check that the network you are connecting is in your reach and you can make connection on concerned ports.
Whats the difference between Virus and Spyware ?
Virus usually spread by themselves while spyware don't.
How u check ur own ip address?
ipconfig on windows(NT plateform) winipcfg for win9x clients and ifconfig on *nix.
How you check the ip addresses of all computers on network ?
(No sure about it) Use a program called angry ip scanner.
What is PING ? when we use it and why ?
Ping is a utility to determine whether a specific IP address is accessible. It works by sending a packet to the specified address and waiting for a reply. PING is used primarily to troubleshoot network connections. It is often believed that "Ping" is an abbreviation for Packet Internet Groper.
What is Trace route ?
A utility that traces a packet from your computer to an Internet host, showing how many hops the packet requires to reach the host and how long each hop takes. If you're visiting a Web site and pages are appearing slowly, you can use traceroute to figure out where the longest delays are occurring.
Some Ports used specifically for some specific programs please list some?
Like 80 for web, 21 for ftp, 25 and 110 for SMTP and POP3 respectively.
Write most usable commands in Dos prompt in day to day work with little detail ?
The most dos commands i use everyday are ping, tracert, pathping and nslookup Some Ports used specifically for some specific programs please list some?
Like 80 for web, 21 for ftp, 25 and 110 for SMTP and POP3 respectively.
Write most usable commands in Dos prompt in day to day work with little detail ?
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