Correct Answer:
B. Routing between autonomous systems on the internet.
Explanation:
The correct answer is Routing between autonomous systems on the internet. because BGP serves as the primary mechanism that ties massive networks together globally.
- Step 1 (Autonomous Systems): The internet consists of thousands of large networks managed by ISPs and corporations, known as Autonomous Systems (AS). BGP acts as the essential map to navigate between them.
- Step 2 (Path Selection): BGP exchanges routing details across peer connections, calculating stable paths to ensure that data packets travel reliably across global paths to reach their destination network.
- Incorrect Options:
- Assigning local IP addresses is incorrect because local internal IP address assignment is handled automatically by DHCP servers.
- Encrypting user passwords is incorrect because password encryption relies on cryptographic hash functions like bcrypt or Argon2.
- Connecting wireless printers is incorrect because wireless printers communicate using local protocols like Wi-Fi Direct, mDNS, or basic TCP/IP.