WGU C172 Study Guide Set 2023 QUESTIONS AND ANSWERS ALREADY PASSED AND VERIFIED

NIC - CORRECT ANS What functions at the data link by using a unique MAC address? Router - CORRECT ANS a network device that is used to connect 2 or more network segments by performing OSI layer 3 functions like packet-forwarding responsible for implementing NAT File Server - CORRECT ANS used as a shared storage for all member nodes of a LAN Layer 1 - CORRECT ANS Physical Layer Layer 2 - CORRECT ANS Data link layer Layer 3 - CORRECT ANS Network layer Layer 4 - CORRECT ANS Transport layer Layer 5 - CORRECT ANS Session layer Layer 6 - CORRECT ANS Presentation layer Layer 7 - CORRECT ANS Application layer Physical layer - CORRECT ANS provides the electrical and mechanical connection to the network Data Link layer - CORRECT ANS Handles error recovery, flow control (synchronization), and sequencing Ethernet 802.3 standard defined here Network layer - CORRECT ANS Accepts outgoing messages and combines messages or segments into packets, adding a header that includes routing information Transport layer - CORRECT ANS Ensures error-free packets. Segments/reassembles packets and handles flow control Session layer - CORRECT ANS provides the control functions necessary to establish, manage and terminate the connections as required to satisfy the user request Presentation layer - CORRECT ANS accepts and structures the messages for the application. translates the messages for the application. responsible for data compression and encryption Application layer - CORRECT ANS Interacts with application programs that incorporate a communication component such as your Internet browser and email Physical layer examples - CORRECT ANS NICs, twisted-pair cables, fiber, UTP, EIA/TIA, DSL, ISDN Data link layer examples - CORRECT ANS MAC addresses, ARP, PPP, HDLC Network layer examples - CORRECT ANS IP, IPX, IPSec, IPv4 and IPv6 Transport layer examples - CORRECT ANS TCP, UDP Session layer examples - CORRECT ANS NFS, SQL, PPTP, PAP, SCP Presentation layer examples - CORRECT ANS ASCII, JPEG, GIF, SSL Application layer examples - CORRECT ANS HTTP, FTP, SMTP (email) the network - CORRECT ANS OSI layer related to the function of the IP protocol suite data link - CORRECT ANS OSI layer responsible for organizing how bits are passed over the physical layer between devices within the same collision domain transport - CORRECT ANS makes sure packets of data are received correctly and resend them if they are not WGU C1