WGU C172 - Network and Security Foundations Questions and Answers Already Graded A

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WGU C172 - Network and Security Foundations Questions and Answers Already Graded A Application Layer ✔✔Interacts with application programs that incorporate a communication component such as yo... ur internet browser and email. Bus Topology ✔✔The computers share the media (coaxial cable) for data transmission. Cable Modem ✔✔A modem that can use the high bandwidth of a cable television system to deliver high-speed data to and from the service provider. CAT6 (category 6) ✔✔Twisted-pair cables capable of carrying up to 1000Mbps (1 gigabit) of data up to a length of 100 meters. Crossover ✔✔Transmit and receive signal pairs are crossed to properly align the transmit signal on one device with the receive signal on the other device. CSMA/CD ✔✔Carrier sense multiple access with collision detection is the Ethernet LAN mediaaccess method. Data Link Layer ✔✔Layer of the OSI reference model that handles error recovery, flow control (synchronization), and sequencing. Deterministic ✔✔Access to the network is provided at fixed time intervals. Ethernet, Physical, Hardware, or Adapter Address ✔✔Other names for the MAC address. Firewall Protection ✔✔Used to prevent unauthorized access to your network. Host Address ✔✔Same as host number. Host Number ✔✔The portion of the IP address that defines the location of the networking device connected to the network; also called the host address. Hotspots ✔✔A limited geographic area that provides wireless access for the public. Hub ✔✔Broadcasts the data it received to all devices connected to its ports. IANA ✔✔The Internet Assigned Numbers Authority is the agency that assigns IP addresses to computer networks. ICMP ✔✔Internet Control Message Protocol. IEEE ✔✔Institute of Electrical and Electronics Engineers, one of the major standards-setting bodies for technological development. Intranet ✔✔An internal network that provides file and resource sharing but is not accessed from the Internet. IP Address ✔✔Unique 32-bit address that identifies on which network the computer is located as well as differentiates the computer from all other devices on the same network. IP Internetwork ✔✔A network that uses IP addressing for identifying devices connected to the network. ipconfig /all ✔✔Enables the MAC address information to be displayed from the command prompt. ISP ✔✔Internet service provider. Link Integrity Test ✔✔Protocol used to verify that a communication link between two Ethernet devices has been established. Link Light ✔✔Indicates that the transmit and receive pairs are properly aligned. Link Pulses ✔✔Sent by each of the connected devices via the twisted-pair cables when data is not being transmitted to indicate that the link is still up. Local Area Network (LAN) ✔✔Network of users that share computer resources in a limited area. MAC Address ✔✔A unique 6-byte address assigned by the vendor of the network interface card. Mbps ✔✔Megabits per second Mesh Topology ✔✔All networking devices are directly connected to each other. Multiport Repeater ✔✔Another name for a hub. Network Address Translation (NAT) ✔✔Translates the private IP address to a public address for routing over the Internet. Network Interface Card (NIC) ✔✔The electronic hardware used to interface the computer to the network. Network Layer ✔✔Accepts outgoing messages and combines messages or segments into packets, adding a header that includes routing information. Network Number ✔✔The portion of the IP address that defines which network the IP packet is originating from or being delivered to. Organizationally Unique Identifier (OUI) ✔✔The first 3-bytes of the MAC address that identifies the manufacturer of the network hardware. OSI ✔✔Open system interconnect. OSI Model ✔✔The seven layers describing network functions. Overloading ✔✔Where NAT translates the home network's private IP addresses to a single public IP address. Packet ✔✔Provides grouping of the information for transmission. Physical Layer ✔✔Layer of the OSI reference model that provides the electrical and mechanical connection to the network. Describes the media that interconnects networking devices. Ping ✔✔Command used to test that a device on the network is reachable. Port Address Translation (PAT) ✔✔A port number is tracked with the client computer's private address when translating to a public address. Ports ✔✔The physical input/output interfaces to the networking hardware. Presentation Layer ✔✔Layer of the OSI reference model that accepts and structures the messages for the application. Private Addresses ✔✔IP addresses set aside for use in private intranets. Protocol ✔✔Set of rules established for users to exchange information. Range Extender ✔✔Device that relays the wireless signals from an access point or wireless router into areas with a weak signal or no signal at all. RJ-45 ✔✔The 8-pin modular connector used with CAT6/5e/5 cable. Service Set Identifier (SSID) ✔✔Name that is used to identify your wireless network and is used by your access point or wireless router to establish an association. Session Layer ✔✔Layer of the OSI reference model that provides the control functions necessary to establish, manage, and terminate the connection. SSID ✔✔Service set identifier. Star Topology ✔✔The most common networking topology in today's LANs where all networking devices connect to a central switch or hub. Stateful Packet Inspection (SPI) ✔✔Type of firewall that inspects incoming data packets to make sure they correspond to an outgoing r [Show More]

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