Chapter 4: Public and Private Network

What is the primary purpose of a public IP address?

• To identify devices within a local network

• To identify devices on the wider internet

• To encrypt data transmissions​

• To assign MAC addresses to devices

Answer explanation

A public IP address is a globally unique address assigned to a device, allowing it to communicate over the internet.

Can private IP directly access to Internet?

Bolehkah private IP diakses secara terus ke Internet

• YES

• NO

What is private IP?

Apakah itu private IP?

• An IP address used within a local network and not routable on the public internet.

• An IP address assigned by IANA for global identification.

• A temporary IP address used for internet access.

• An IP address that changes every time a device connects to the internet.

Answer explanation

Alamat IP peribadi ialah alamat yang digunakan dalam rangkaian tempatan (LAN) untuk membolehkan komunikasi antara peranti tanpa mendedahkannya kepada internet. Ia tidak boleh diakses secara langsung dari internet dan biasanya digunakan dalam rangkaian rumah dan pejabat.

How does Network Address Translation (NAT) function in relation to private IP addresses?

• It assigns MAC addresses to devices

• It encrypts data packets for secure transmission

• It converts private IP addresses to public IP addresses for internet communication

• It blocks unauthorized access to the network

Answer explanation

NAT allows devices with private IP addresses to access the internet by translating their private addresses to a public IP address.

Which of the following Private IP address ranges is commonly use for small organization or home network?

• 10.0.0.0 - 10.255.255.255.255

• 172.16.0.0 - 172.31.255.255

• 192.168.0.0 - 192.168.255.255

Which of the following Private IP address ranges is commonly use for big organization?

• 10.0.0.0 - 10.255.255.255.255

• 172.16.0.0 - 172.31.255.255

• 192.168.0.0 - 192.168.255.255

Which of the following Private IP address ranges is commonly use for medium organization?

• 10.0.0.0 - 10.255.255.255

• 172.16.0.0 - 172.31.255.255

• 192.168.0.0 - 192.168.255.255

Which command use to check our Private IP?

• ping

• netstat

• tracert

• ipconfig

Answer explanation

ipconfig command is used to display information about your network configuration and refresh DHCP and DNS Settings

Alamat IP yang manakah merujuk kepada ciri ini?:

Used internally

• Public IP address

• Private IP address

Alamat IP yang manakah merujuk kepada ciri ini?:

The address is unique

• Public IP address

• Private IP address