WGU - MSCSIA - C700 - Secure Network Design | 674 Questions and Answers(A+ Solution guide)

What happened September 15th 2016? - Brian Krebs, (KrepsOnSecurity) was DDoS'd with Mirai On what day was Brian Krebs attacked? - September 15th 2016 What was Mirai? - The Botnet that was used against Brian Krebs on September 15th 2016 It sent 620 Gbps of traffic Was over 2x the amount Akamai had ever encountered It used the IoT such as DVRs, security cameras and home routers What is the IoT? - Internet of Things Connected devices aka smart devices Smart TVs, Smart Thermostats, Smart Fridges, Smart Speakers etc What is Dyn? - A DNS hosting service that was hit by Mirai. It was used by Netflix, Tumblr, Amazon, Twitter, Spotify and Tumblr When did the internet first become commercial? - 1995 Prior to that the "Internet's Acceptable Use Policy" prohibited commercial use because it was supported by the National Science Foundation (NSF).In 1995 NSF pulled out and the internet became commercial What is an ISP? - Internet Service Provider What are hosts? - All computers connected to a network that participate directly in network communication are classified as hosts. Hosts are also called end devices. What is e-commerce? - Conducting business on the internet (buying/selling on the internet) What accounts for 33% of the internet's traffic? - Netflix What network came before the internet? - ARPNET When was the internet created? - Late 1970s Who sets standards for the internet? - Internet Engineering Task Force (IETF) But standards are optional Who controls internet addresses? - Internet Assigned Name Authority (IANA) Word/Phrase - Definition 2.4 GHz Unlicensed Service Band - Unlicensed frequency band around 2.4 GHz. Used for Wi-Fi, Bluetooth, and other services.4-Pair Unshielded Twisted Pair (UTP) - The type of wiring typically used in Ethernet networks. 4- pair UTP contains eight copper wires organized as four pairs. Each wire is covered with dielectric insulation, and an outer jacket encloses and protects the four pairs. 5 GHz Unlicensed Service Band - Unlicensed radio band around 5 GHz. Used for Wi-Fi and other services. 64-bit modified extended unique identifier (EUI-64) - In most IPv6 addresses, the interface ID that specifies a particular device on a subnet is 64 bits long. Typically the 64-bit address is derived from a 48- bit EUI-48 address (formerly called a MAC address). If so, it is a modified extended unique identifier (EUI-64). 802 LAN/MAN Standards Committee - The IEEE committee responsible for Ethernet standard