# ECEN 602 Solution Homework 1 F2016 - ECEN 602 Fall 2016...

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ECEN 602 Fall 2016: Solution Homework 1 Due: Sep 7 10:20 am 1 Solution Homework 1 ECEN 602 Due Sept. 7, 2016 @ 10:20 am 1. Peterson and Davie 5 th Edition (P&D) 1.3 (Chapter 1, Problem 3) (14%) (a), (b), & (c) 3%; (d) 5% 2. P&D 1.13 (14%) (a), (b), & (c) 3%; (d) 5% In part (b), the more exact answer is 321.25 10 6 B or 306.37 MB (M=2 20 ) More accurately, 25 MB/1000 Mbps = 209.715 10 6 bits/1000 Mbps = 0.209 sec or 2.78 sec until the last picture bit arrives on earth.
ECEN 602 Fall 2016: Solution Homework 1 Due: Sep 7 10:20 am 2 3. P&D 1.16 (14%) (a) 4%; (b) & (c) 5% 4. P&D 1.30 (14%) (a) 4%; (b) & (c) 5%
ECEN 602 Fall 2016: Solution Homework 1 Due: Sep 7 10:20 am 3 5. P&D 1.31 (14%) (a) 4%; (b) & (c) 5% 6. Two Factor Authentication (14%) Two-factor authentication is available for logins to both the TAMU CAS-enabled web services (e.g., Howdy, TAMU Gmail, Gateway, SSO, Maestro, Library EZProxy, Research.gov, etc) and the TAMUS SSO services (e.g., HRConnect, Concur, Maestro, LeaveTraq, etc). Enable Duo two-factor authentication for your TAMU NetID, and turn in a screen capture of your smartphone/tablet Duo app Login Request screen or the Duo web page (the latter if you are not using a smartphone/tablet app). The basic idea of two-factor authentication is that it takes two things to login to your account: (1) something you know, typically a password, and (2) something you have, e.g., cell phone (text message), smartphone (app), hardware token, fingerprint, etc. If you accidentally type your password into a web site in response to a phishing attack, or you use the same password at many sites and the bad guys crack one of those sites, enabling two-factor will protect you
ECEN 602 Fall 2016: Solution Homework 1 Due: Sep 7 10:20 am 4 in most cases. Almost all data breaches start with compromising employee or customer accounts to get access. The Verizon Enterprise 2015 Data Breach Report notes that over 95% of Web application attacks involve harvesting credentials from a customer or a customer's device and then logging into web applications. In 2013, we had nine A&M System employees give up their SSO credentials in response to a phishing attack. The hackers changed the direct deposit account numbers in an effort to steal paychecks. With two-factor authentication, even if your password is compromised, the hackers will not be able to login to your account in most cases (I say most cases because there was a clever attack on certain European banks' debit card holders in 2014 where the hackers got 1000's of customers to not only give up their credentials but also to download an Android smartphone app that read the two-factor code sent in an SMS message to their cell phone -- these users had their bank accounts cleaned out). The NetID Two-Factor Authentication enrollment page is located at , and it will walk you through the enrollment process. SSO Two-Factor enrollment is available by first logging into SSO, selecting the "Profile" tab, and then choosing "Two Factor Authentication." The next time you login to SSO, you will be prompted to set up two-factor. The two- factor service we are using is provided by cloud vendor Duo Security through an Internet2 NET+ service.