In FTP, the well-known port ____ is used for the control connection and the well-known port ________ for the data connection. a. 21; 22 b. 21; 20 c. 20; 21 d. none of the above

Question 3: An educational institution has an access network whose operating         parameters are as follows:    access link to originating servers’ rate: 15.4 Mbps    RTT from institutional router to server: 2 sec    Web object size: 100K bits    Average request rate from browsers to origin servers: 150/sec    average data rate to browsers: 45.0 Mbps    Institutional access network speed: 1Gbps. 3.1.    You are requested to provide the performance of the institutional access network in terms of•    LAN utilization•    Access link utilization•    End-to-end delay from the access network to the origin servers. Note: Assume that the requests from the web client to the originating web servers are of the order of 2GB of data on average. 3.2.    Assuming that the institution would like to install a web cache in its access network with a cache hit rate is 0.65, you are asked to recompute the new performance of the access network in terms of:3.2.1.    LAN utilization3.2.2.    Access…

802.11 mobility, in which a wireless station moves from one BSS to another within the same subnet. When the APS are interconnected with a switch, an AP may need to send a frame with a spoofed MAC address to get the switch to forward the frame properly. Why?

Question 6 sm.Full explain this question and text typing work only     We should answer our question within 2 hours takes more time then we will reduce Rating Dont ignore this line