Soluții

Benefits of changing your password regularly

Changing passwords frequently is a commonly recommended security practice, but it’s worth noting that the importance of frequent password changes has been debated in recent years. However, there are still some valid reasons why changing passwords periodically can enhance your online security:

  1. Mitigating Data Breaches: If a website or service you use experiences a data breach, your login credentials could be compromised. Changing your password regularly reduces the window of opportunity for attackers to misuse your account.
  2. Account Security: Regularly changing your passwords makes it more difficult for unauthorized users to access your accounts. Even if someone manages to obtain your old password, it will become useless once you change it.
  3. Multiple Account Protection: Many people use the same password for multiple accounts. If one of these accounts is compromised and you reuse passwords, all your other accounts become vulnerable. Regularly changing passwords reduces the risk associated with password reuse.
  4. Phishing Attacks: Phishing attacks trick users into revealing their passwords. If you unknowingly fall victim to a phishing scam, changing your password promptly can prevent the attacker from accessing your account.
  5. Weak or Guessed Passwords: If you’re using weak passwords or passwords that are easy to guess (like “password123” or your birthdate), changing them regularly ensures that even if someone tries to crack your password, it will change before they succeed.
  6. Employee Turnover: In a corporate or organizational context, changing passwords regularly is crucial, especially when employees leave or change roles. It prevents former employees from accessing sensitive company data.
  7. Compliance Requirements: Some regulatory standards and corporate policies mandate regular password changes as a security measure.

Despite these reasons, it’s important to note that frequent password changes are not the only solution to account security. Using strong, unique passwords for each account, enabling two-factor authentication, and staying vigilant against phishing attempts are equally important practices in maintaining robust online security.

Additionally, advancements in technology, such as biometric authentication and password managers, are changing the landscape of password security, making the emphasis on frequent password changes less significant than before.

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Open the Windows Snipping Tool with a keyboard shortcut

Need to quickly take a screenshot on your PC? If so, Windows’ built-in Snipping Tool is just a keyboard shortcut away.

Press Windows+Shift+S to open the Snipping Tool on Windows 10 or Windows 11. The Snipping Tool can take rectangular region screenshots, full-screen screenshots, screenshots of a specific window, or freeform screenshots. You can also draw on a screenshot before you save it.

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Ce inseamna PCI Express

PCI Express (Peripheral Component Interconnect Express) E slotul (sau sloturile) de pe placa de baza unde se conecteaza placile video.
  • PCI Express e mult, mult mai rapid decat vechiile PCI si AGP
  • Latimea de banda e mult mai larga decat la cele din urma
  • Are mai multe benzi de circulatie prin care trimite si primeste datrele, iar o singura banda PCI Express e mult mai rapida decat una AGP sau PCI
  • Se conecteaza direct la northbridge (PCI se conecta la southbridge ). Da, si AGP se conecta la northbridge, dar nu avea atatea lane-uri, “benzi de circulatie” a datelor ca si PCI Express, iar cele pe care le avea erau mult mai lente.
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Ce inseamna Hyper-Threading

Hyper-Threading

In primul rand Hyper-Threading (HT) e facut de Intel si se foloseste numai la procesoarele Intel. Cu tehnologia aceasta, daca ai un singur procesor, sistemul de operare vede ca si cum ai avea doua sau unul dual-core. Si astfel, mai multe procese pot sa ruleze deodata.

Procesorul single-core schimba atat de repede intre ele incat ai impresia ca merg deodata. De exemplu, daca asculti o melodie in Winamp in timp ce stai pe Facebook, acestea nu se intampla deodata, ci procesorul schimba extrem de repede intre ele, si in timp psihologic, uman, nu iti dai seama.

Hyper-Threading e o tehnologie care poate sa “imparta” procesorul in mai multe fire de executie (thread inseamna fir) incat sa ruleze pe bune deodata. De cand cu procesoarele dual-core, nu  mai e  nevoie de aceasta tehnologie, pentru ca, evident, chiar sunt doua cipuri reale intr-o capsula.

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Ce inseamna Northbridge

Northbrige (puntea de nord) este acel cip de pe placa de baza care face legatura intre procesor, RAM si southbridge. De aceea i se spune bridge, pentru ca-i o punte care face legatura intre aceste componente. E cel mai important cip de pe placa de baza, dupa procesor. E “directorul” placii de baza (procesorul fiind seful executiv).

Northbrige-ul controleaza:

  • memoria RAM
  • sloturile PCI Express
  • slotul M2
  • vechiul slot AGP (il controla)
  • cererile dinspre si inspre procesor
  • legatura cu southbridge
  • contine controler-ul video onboard (“placa video” onboard), daca e dotat cu asa ceva.

Sub acel radiator se afla cipul Northbridge.

Nortbridge-ul mai este denumit si MCH (Memory Controller Hub – hubul controllerului de memorie) pentru ca acesta controleaza memoria RAM. Cand procesorul apeleaza la RAM, Northbridge-ul ii spune cat RAM are instalat, la ce adresa din memorie se gaseste fisierul respectiv, cata memorie ocupa… etc. Acesta are un tabel virtual care contine adresele din memoria RAM si detalii despre capacitatea memoriei.

Fara acest cip procesorul sau BIOS-ul nu ar sti cum sa lucreze cu memoria. De asemenea, la fel se “intelege” si cu placa video (sloturile PCI Express).Northbridge-ul se leaga de procesor prin FSB (Front Side Bus – canalul principal frontal)
Inainte, prin ani 90, erau mai multe cipuri pe placa de baza care indeplineau functiile pe care le indeplineste acum northbridge-ul, insa cu timpul toate acestea au fost incluse in doar trei chip-uri: northbridge, southbridge si super I/O.

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