Stream of Knowledge

  In 5G communication systems, the phased-array antenna is one of the lead front-end components that defines massive multiple-input, multiple-output (MIMO) performance. The trend outlined in recent years involves providing a robust and complete platform/wizard for RF/microwave engineers to develop more capable antennas and other RF front-end components in less time than before. 1   In addition, systems that operate at millimeter-wave (mmWave) frequencies offer benefits that include small antenna sizes and more available bandwidth. 2 However, a challenge arises due to the wide variety of application-driven requirements, which encompasses everything from both city and rural environments to realized gain, scan, and polarization performance attributes to impedance matching and more. Such an extensive number of requirements cannot be met by a single and one-time designed element. This means that any practically convenient modeling platform must contain an extensive library of prede...

  Wireless Security TOTAL POINTS 4 1 . Question  1 Defense against digital dark arts Video link: https://youtu.be/Ug5DZcF2NvY What are some of the weaknesses of the WEP scheme? Check all that apply. 1 / 1 point Its use of ASCII characters for passphrases Its use of the RC4 stream cipher Correct You nailed it! The RC4 stream cipher had a number of design flaws and weaknesses. WEP also used a small IV value, causing frequent IV reuse. Lastly, the way that the encryption keys were generated was insecure. Its poor key generation methods Correct You nailed it! The RC4 stream cipher had a number of design flaws and weaknesses. WEP also used a small IV value, causing frequent IV reuse. Lastly, the way that the encryption keys were generated was insecure. Its small IV pool size Correct You nailed it! The RC4 stream cipher had a number of design flaws and weaknesses. WEP also used a small IV value, causing frequent IV reuse. Lastly, the way that the encryption keys were generated was i...

  Secure Network Architecture TOTAL POINTS 7 Video link: https://www.youtube.com/watch?v=raoM2SrPsrU 1 . Question  1 VIDEO LINK: HTTPS://WWW.YOUTUBE.COM/WATCH?V=RAOM2SRPSRU Why is normalizing log data important in a centralized logging setup? 1 / 1 point Log normalizing detects potential attacks. Uniformly formatted logs are easier to store and analyze. It's difficult to analyze abnormal logs. The data must be decrypted before sending it to the log server. Correct Nice work! Logs from various systems may be formatted differently. Normalizing logs is the practice of reformatting the logs into a common format, allowing for easier storage and lookups in a centralized logging system. 2 . Question  2 What type of attacks does a flood guard protect against? Check all that apply. 1 / 1 point DDoS attacks Correct You got it! A flood guard protects against attacks that overwhelm networking resources, like DoS attacks and SYN floods. Man-in-the-middle attacks Malware inf...