Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Chapter 8, Problem P21P
Program Plan Intro

TCP:

TCP stands for Transmission Control Protocol which is a standard that establishes and maintain a network conversion with the use of application programs. If one uses TCP, one need to use a minimum of two Round trip time, one round trip to set up the connection for TCP and another round trip for the client to send the request and for the server to send the reply back.

SSL:

SSL stands for Secure Socket Layer and is a security protocol that establishes link between the web browser and the web server in an online communication.

Given Information:

Alice and Bob are communicating over an SSL session. An attacker, who does not have any of the shared keys, inserts a bogus TCP segment into a packet stream with correct TCP checksum and sequence numbers and correct IP addresses and port numbers.

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Problem 3: Consider the two-link planar elbow manipulator shown below with link information: a₁ = 3, a₂ = 3. a2 S 3/0 Link | a | ai | di ai | di | 0i | มา 02 21 02. 12 01 0 0 01 02 0 0 02 01 To (a) Find the location of the end-effector P° if the joint angles are: 0₁ = 140°, 0₂ = 30° (b) Find the values of joint variables 01, 02 if the robotic manipulator is commanded to reach the desired location of Pº = [4.5, 3,0]. Notice there are possibly two sets of solutions. (c) Also sketch the two poses of the robot for the computed joint variables. Page 5 of 7
Problem 5: The following shows the schematic of a SCARA robot and its DH parameters. Complete the following questions based on this information. 20 01 21 02. 22 done by ai α; di Ꮎ ; 21 d3 1 a1 0 0 0₁** 2 a2 180° 0 0% 3 0 0 d3 0 The Jacobian matrix of this robot is given below: -a1S1a2S12 -a2S12 J(q) = a1c1 + a2c12 0 a2C12 0 10° (a) For a₁ = 1, a2 = 2, is q = 180° a singularity configuration of this robot? a1 3 [10°1 (b) For a₁ = 1, a2 = 2, is q = | 0° a singularity configuration of this robot? 3
(c) Consider the following sequence of rotations: 1) Rotate by 130° about the world z-axis 2) Rotate by 45° about the current x-axis 3) Rotate by -30° about the world/fixed y-axis Compute the resulting overall rotation matrix R. Notice that you need to provide the numerical solution to the matrix R. (d) Find R giving the following rotation matrices. 1 0 0 1 √√3 го о 0 0 R₁₁ = 2 R₁ = 0 1 0 1 0 0 0 2 2
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