Network and Security - Foundations - C172 - Most Import Materials for Final Objective Assessment Test QUESTIONS WITH COMPLETE SOLUTIONS

802.11a/Wireless-A correct answer: wireless 5GHz - 54Mbps - *75ft* 802.11b/Wireless-B correct answer: wireless 2.4GHz - *11Mbps* - 100-150ft 802.11g/Wireless-G correct answer: 2.4GHz - *54Mbps - 150ft* 802.11ac/Wireless-AC correct answer: 5GHz - *1.3Gbps* 802.11n/Wireless-N correct answer: 2.4GHz - *200+Mbps* 2.4GHz correct answer: Frequency ranges of 802.11G/802.11B 5GHz correct answer: Frequency ranges of 802.11AC/802.11A Application Layer correct answer: Layer 7 in the OSI model. Support for applications. Examples: HTTP, FTP, SMTP Presentation Layer correct answer: Layer 6 in the OSI model. Protocol conversion, data translation. Examples: ASCII, JPEG Session Layer correct answer: Layer 5 in the OSI model. Establishes, manages, and terminates sessions. Examples: NFS, SQL Transport Layer correct answer: Layer 4 in the OSI model. Ensures error-free packets. Examples: TCP, UDP Network Layer correct answer: Layer 3 in the OSI model. Provides routing decisions. Examples: IP, IPX Data Link Layer correct answer: Layer 2 in the OSI model. Provides for the flow of data. Examples: MAC addresses. Physical Layer correct answer: Layer 1 in the OSI model. Signals and media. Examples: NICs, twisted-pair cable, fiber. OSI model correct answer: Application, Presentation, Session, Transport, Network, Data Link, Physical. (*P*lease *D*o not *T*hrough *S*asuage *P*izza *A*way) Application Layer (TCP/IP) correct answer: Defines the applications used to process requests and which ports and sockets are used