Media Access Control - controlul accesului la mediu, controleaza accesul si delimiteaza cadrele, detecteaza erorile si recunoaste adresele, fiind inferior subnivelului LLC. Acesta comunica direct cu placa de retea si este responsabil pentru...
Preface
The TCP/IP protocol suite has become a staple of today's international society and global economy. Continually evolving standards provide a wide and flexible foundation on which an entire infrastructure of applications are built.
Through...
Ok... sa incep cu inceputul... Intotdeauna hackingul si securizarea incep cu scanarea de porturi... De ce ? Ca sa poti hackerii/securiza ceva trebuie sa stii ce servicii asteapta conexiuni, pentru a stii ce se poate exploata pe serverul respectiv....
- application processes cooperate via logical connections
- application processes are hosted by systems
- systems are linked by physical interconnection media
- a connection is realized as a composition of simpler functions
- this induce the...
This is an introduction to the Internet networking protocols (TCP/IP). It includes a summary of the facilities available and brief descriptions of the major protocols in the family....
Terminator - PC Network Interface Card
T-Connector - Printer Network Interface Card
T-Connector - PC Network Interface Card
T-Connector - PC Network Interface Card
Coaxial Cable
Terminator - PC Network Interface Card
Networks have become a fundamental, if not the most important, part of today's information systems. They form the backbone for information sharing in enterprises, governmental and scientific groups. That information can take several forms. It can...
- Why are loopbacks advertised as /32 host routes in OSPF?
- How do I change the reference bandwidth in OSPF?
- How does OSPF calculate its metric or cost?
- Are OSPF routing protocol exchanges authenticated?
- What is the link-state...
This chapter describes how to configure OSPF. For a complete description of the OSPF commands in this chapter, refer to the "OSPF Commands" chapter of the Network Protocols Command Reference, Part 1. To locate documentation of other...
People and businesses are increasingly relying on networked computer systems to support distributed applications. These distributed applications might interact with computers on the same local area network (LAN), within a corporate intranet, or...
Aceasta prima faza a retelelor nu se baza pe o legatura fizica intre calculatoare. Mediul de comunicatie era discheta, iar viteza de transmisie era determinata de viteza de deplasare a utilizatorului de la un calculator la altul (de aceea erau...
This document gives an example of how to configure Hot Standby Router Protocol (HSRP) in order to take advantage of multiple paths to a given destination.
HSRP is often used to improve resiliency in networks, but this can cause a decrease in...
- Will the standby router take over if the active router LAN interface state is "interface up line protocol down"?
- Can I configure more than one standby group with the same group number?
- When an active router is tracking serial 0...
The examples in the first two articles in this series used IP addresses exclusively to identify networks, subnets and hosts. But while an IP address is all a computer needs, humans work better with names.
Every so often, on a newsgroup or...
It's important to know a little ARPAnet history to understand the Domain Name System (DNS). DNS was developed to address particular problems on the ARPAnet, and the Internet - a descendant of the ARPAnet - remains its main user.
If you've been...
In the late 1960s, the U.S. Department of Defense's Advanced Research Projects Agency, ARPA (later DARPA), began funding the ARPAnet, an experimental wide area computer network that connected important research organizations in the United States....
If you spend any time on the Internet sending e-mail or browsing the Web, then you use domain name servers without even realizing it. Domain name servers, or DNS, are an incredibly important but completely hidden part of the Internet, and they are...
I want to thank all the people that I have bothered with reading this HOWTO (you know who you are) and all the readers that have e-mailed suggestions and notes.
This will never be a finished document; please send me mail about your problems and...
Hierarchical name space
- Each node in tree represents domain/subdomain
- Some subdomains are defined as zones
- Each zone has a "primary" name server responsible for all lower nodes
- Resource records (RR) are defined for each...
Rafinare cautare
Tutoriale- Tutoriale foto (2)
- Tutoriale GSM (14)
- Tutoriale hardware (7)
- Tutoriale Limbi Straine (46)
- Tutoriale linux (14)
- Tutoriale management (5)
- Tutoriale programare (4)
- Tutoriale resurse umane (1)
- Tutoriale clustering (14)
- Tutoriale software (4)
- Tutoriale retele/networking (19)
- Sockets (7)
- Parallel & distributed programming (6)
- Java (12)
- Scripting (5)
- PHP (3)
- C++ (49)
- Delphi (3)
