ECE369v6-HW8K

ECE369v6-HW8K - Department of Electrical and Computer...

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Department of Electrical and Computer Engineering University of Massachusetts Dartmouth ECE 369 Computer Networks HW8 Key : Link Layer: Links, Access Networks, & LANs [Kurose & Ross v6] ECE369v6-Ch5.ppt: Principle of Link Layer Services: framing, link access, per-hop reliability [6+7]. Multiple Access Protocols: 1. Channel Partition, 2. Random Access, 3. Taking Turns [17~20] ALOHA, CSMA, CSMA/CD [23~34] MAC address & ARP [42~52] Ethernet [54~59] VLAN, MPLS, Data Center Networks [62~76] R3. What are some of the possible services that a link-layer protocol can offer to the network layer? Which of these link-layer services have corresponding services in IP? In TCP? Solution: Framing: also framing in IP (called datagram) and TCP (called segment); Link access; Reliable delivery: also reliable delivery in TCP; Flow control (between Sender & Receiver): also flow control in TCP (End2End); Error detection: also error detection in IP and TCP; Error correction; Full duplex: TCP is also full duplex.
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