The two common types of internet access are dial-up shell accounts and ______accounts.

Correct option is A

• SLIP (Serial Line Internet Protocol) and PPP (Point-to-Point Protocol) are two protocols used for establishing internet connections over serial interfaces like phone lines.

• SLIP was an older protocol used for dial-up connections, while PPP is more robust and supports error detection, dynamic IP address assignment, and compression.

• These protocols allow computers to connect to the internet via dial-up shell accounts.

• MODEM is a device that modulates and demodulates signals for internet connectivity but is not a type of internet account.

• PERMANENT accounts refer to dedicated, always-on connections, and SPX/IPX are network protocols used primarily in local area networks (LANs), not for internet access.