Network and Security - Foundations - C172.docx

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 Transport Layer (TCP/IP) - correct answer Defines the type of connection established between hosts and how acknowledgements are sent Internet Layer (TCP/IP) - correct answer Defines the protocols used for addressing and routing the data packets Network interface Layer (TCP/IP) - correct answer Defines how the host connects to the network The well-known ports - correct answer TCP/IP Ports 1-1023 Registered ports - correct answer TCP/IP Ports 1024-49,151 Private ports - correct answer TCP/IP Ports 49,152-65,535 Social Engineering - correct answer A process by which an intruder obtains enough information from people to gain access to the network Password Cracking - correct answer An attack in which the attacker tries to guess the user's password Dictionary Attack - correct answer An attack that uses known passwords and many variations (upper- and lowercase and combinations) to try to log in to an account Brute-Force Attack - correct answer An attack in which the attacker uses every possible combination of characters to guess the password