'Sum 0xffff' presentation slideshows

An Introduction to Computer Networks

An Introduction to Computer Networks. Lecture 4: Point-to-Point link. University of Tehran Dept. of EE and Computer Engineering By: Dr. Nasser Yazdani. Outline. Concepts: Data signal Links Encoding Framing Error Detection Error correction or reliable transmission Stop and wait

505 views • 37 slides

Outline Hardware Building Blocks Encoding Framing Error Detection Sliding Window Algorithm

Point-to-Point Links. Outline Hardware Building Blocks Encoding Framing Error Detection Sliding Window Algorithm. Network Connections. Memory latency is more important than CPU speed. Bits. 0. 0. 1. 0. 1. 1. 1. 1. 0. 1. 0. 0. 0. 0. 1. 0. NRZ. Encoding.

445 views • 31 slides

Data Link Layer

Data Link Layer. Today: LANs other than Ethernet token rings switched networks cellular technology remaining issues error detection reliable transmission. Token Rings. example: FDDI nodes arranged in ring all frames travel around the ring in the same direction

315 views • 22 slides

Lecture 6: Framing and Error Detection-Data Link Layer Functions

Lecture 6: Framing and Error Detection-Data Link Layer Functions. Review of Lecture 5. Level 1: Physical or Hardware Layer Deals with the transmission of bits Signal Generation and Modulation Encoding Implemented by adapters and device drivers. Review of Lecture 5.

269 views • 20 slides

Lecture 6: Framing and Error Detection-Data Link Layer Functions

Lecture 6: Framing and Error Detection-Data Link Layer Functions. Review of Lecture 5. Level 1: Physical or Hardware Layer Deals with the transmission of bits Signal Generation and Modulation Encoding Implemented by adapters and device drivers. Review of Lecture 5.

299 views • 20 slides

Error Detection/Correction

209 views • 20 slides

Lecture 7: Reliable Packet Transmission

Lecture 7: Reliable Packet Transmission. 8. 16. 16. 8. Beginning. Ending. Header. Body. CRC. sequence. sequence. Cyclic Redundancy Check. Add k bits of extra data (the CRC field) to an n -bit message to provide error detection function For efficiency, want k << n

293 views • 16 slides