EECS 563 Homework 9 1 With all other network parameters fixed as the bit rate of a random access network increases the Smax decreases True or False frames which are 5000 bits long 2 A Slotted ALOHA protocol is used to share a 2 Mb s radio channel The system uses fixed length a Find the maximum packet arrival rate in packets sec b Would you operate the network using the rate found in part a Justify your answer 3 Suppose that a LAN is used to interconnect a set of formation walking robots Discuss the appropriateness of using a token ring Slotted ALOHA network and CSMA CD network for this application 4 How are collision detected for the following protocols Relative to a packet transmission time what is time scale that collisions are detected for the following random access protocols a ALOHA b Slotted ALOHA c p persistent CSMA d CSMA CD e DOCSIS 5 A CSMA CD network operates on a coax cable the propagation speed in coax is 0 88 3 X108 m s at 100 Mb s with a packet size of 1500 bytes a Plot the maximum throughput as the network size varies from 0 1 to 10 km Hint use Average Normalized Delay for a CSMA CD Network as a function of load as the packet length size of network and link rate b Do CSMA CD networks scale as the data rate increase 6 Describe how IEEE 802 11 addresses the hidden terminal problem 7 What is CSMA CA and what protocol standard uses CSMA CA 8 A reservation system has the following parameters Rate 100 Mb s Packet length 1500 Bytes Mini slot size 100 s What is the maximum throughput for the following cases a One minislot used to make one frame reservation b One minislot used to make 10 frame reservation c Nodes contend for reservation minislots using Slotted ALOHA 9 What is the difference between a switch and a router 10 In IEEE 802 11 what is the difference between the infrastructure and Ad hoc modes 2 9 HW Mac EECS 563 2024 Deployed nb 11 What is an advantage of a VLAN 12 What abstraction is provided by generalized forwarding 13 What information is contained in a flow table 14 What provides user identity in 4G 5G networks 15 What is the difference between handoff and mobility in 4G 5G networks 16 What is the difference between a GEO and LEO satellite 17 How would a system using generalized forwarding e g an SDN block all traffic from a specific IP address from being forwarded