Friday, February 8, 2013

Tar Command




 tar -cvf  filename.tar    ---> To create a tar file

 tar -tvf  filename.tar    ---> To list a tar file

 tar -xvf  filename.tar    ---> To extract a tar file

Where

c-Create
t-display
x-Extract
v-verbose
f-filename

Thursday, February 7, 2013

Mac Address


Series of Mac Address

802.11b -Wireless mac address

802.3 -Wired mac address

Abbreviation



IAB-INTERNET ARCHITECTURE BOARD 
MIB-MANAGEMENT INFORMATION BASE 
SNMP-SIMPLE NETWORK MANAGEMENT PROTOCOL 
NMS-NETWORK MANAGEMENT SYSTEM 
TCP⁄IP-TRANSMISSION CONTROL PROTOCOL⁄INTERNET PROTOCOL

IANA-Internet Assigned Numbers Authority

what is SNMP?




How Does SNMP Work?

Basic Communication via SNMP

Through SNMP, client-server communication can take place via the “User Datagram Protocol” (UDP): A monitoring or management software sends (as a client) a UDP packet to the SNMP server, the so-called “agent” which is normally a piece of software running within a device. This in turn reacts by sending an SNMP packet as an answer.Each single question-answer-cycle enables the client to retrieve one “measurement” from the device, for example network traffic, CPU-load, temperature, etc. Depending on the inquiry method, several measurements can be transferred at a time.



http://www.manageengine.com/network-monitoring/what-is-snmp.html

What is MIB ?



http://www.paessler.com/knowledgebase/en/topic/653-how-do-snmp-mibs-and-oids-work

Coding

http://msdn.microsoft.com/en-us/library/aa909982.aspx

what is include guards