What is the purpose of network protocols?

• To increase the speed of data transfer

• To manage hardware resources in a computer

• To provide security against cyber threats

• The purpose of network protocols is to enable communication and data exchange between devices in a network.

បញ្ជាក់ពីប្រព័ន្ធបណ្តាញទាំងបីដែលគេស្គាល់។

• HTTP, FTP, TCP

• IMAP

• POP3

• SMTP

What is an IP address?

• A method for encrypting data on the internet.

• An IP address is a unique numerical label assigned to each device on a network.

• A type of computer virus that spreads through networks.

• A physical device used to connect to the internet.

IPv4 និង IPv6 មានភាពខុសគ្នាដូចម្តេច?

• IPv4 ប្រើប្រព័ន្ធអាសយដ្ឋាន 64-bit ដែលមានលក្ខណៈពិសេសច្រើនជាង IPv6។

• IPv4 គឺជាប្រព័ន្ធអាសយដ្ឋាន 128-bit ដែលបានរចនាឡើងសម្រាប់ការពង្រីកអនាគត។

• IPv4 និង IPv6 គឺស្មើគ្នានៅក្នុងការបង្ហាញអាសយដ្ឋាន និងមុខងារ។

• IPv4 គឺជាប្រព័ន្ធអាសយដ្ឋាន 32-bit ដែលមានអាសយដ្ឋានកំណត់ ខណៈពេលដែល IPv6 គឺជាប្រព័ន្ធអាសយដ្ឋាន 128-bit ដែលមានអាសយដ្ឋានធំជាង និងមានលក្ខណៈពិសេសបន្ថែម។

What is subnetting and why is it used?

• Subnetting is used to create smaller networks within a larger network for better management and efficiency.

• Subnetting is a method to increase the size of a network.

• Subnetting is used to eliminate the need for IP addresses.

• Subnetting is a technique for improving internet speed.

តើគេគណនាចំនួនHostក្នុងSubnet Maskយ៉ាងដូចម្តេច?

• 2^(32 ប៊ីតHost) - 2

• 2^(32 ប៊ីតHost) + 2

• 2^(ប៊ីតHost) * 2

• ប៊ីតHost * 2

What is the subnet mask for a Class C network?

• 255.255.255.0

• 255.255.255.255

• 255.255.0.0

• 192.168.1.0

Network security and its importance?

• Network security is only about firewalls and antivirus software.

• Network security focuses solely on physical security measures.

• Network security is irrelevant in modern cloud computing.

• Network security is the practice of protecting computer networks from threats and unauthorized access, crucial for safeguarding data and ensuring operational integrity.

What are some common network security threats?

• Weak passwords

• Malware, phishing, denial-of-service attacks, man-in-the-middle attacks, insider threats.

• Outdated software

• Firewall misconfigurations

What is a firewall and how does it work?

• A firewall is a physical barrier that prevents unauthorized access to buildings.

• A firewall is a device that boosts internet speed by compressing data.

• A firewall is a type of antivirus software that removes malware from devices.

• A firewall is a network security device that monitors and controls network traffic based on security rules.