Compare PPP with SLIP.
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PPP is an Internet standard protocol defined in RFCs 2153 and 1661. The IETF defined PPP to provide point-to-point, router-to-router, host-to-router, and host-to-host connections. PPP is considered a peer technology based on its point-to-point physical configuration. It is commonly used over dial-up or leased lines to provide connections into IP networks. PPP also supports other Network layer protocols such as Novell IPX and AppleTalk. Due to its flexibility, PPP is the most widely used WAN connection method today.
Serial Line Internet Protocol (SLIP) was the predecessor to PPP; it only supports TCP/IP connections. In addition, SLIP offers no encryption, compression, or error correction. It is an analog protocol limited to 56-Kbps transmission. PPP overcomes all of SLIP's limitations. Other advantages offered by PPP are the capability to handle asynchronous as well as synchronous communication. PPP is also more efficient and supports more protocols and interfaces.
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Answer the following statements true (T) or false (F)
1. On a traditional IBM mainframe, when an I/O operation is finished, the channel signals the main processor and reports its status to the operating system through the channel status word or CSW. 2. On a traditional IBM mainframe, the signal that flashes from a channel to the processor is called an interrupt. 3. A traditional IBM mainframe’s hardware responds to an interrupt signal by switching PSWs. 4. On a traditional IBM mainframe, the old PSW is the special register that holds the address of the next instruction to be executed. 5. On a traditional IBM mainframe, the old PSW is located in a special register.
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Answer the following statement true (T) or false (F)