WGU C172 Study Guide Set Questions and Answers Already Passed

WGU C172 Study Guide Set Questions and Answers Already Passed NIC ✔✔What functions at the data link by using a unique MAC address? Router ✔✔a network device that is used to connect 2 or more network segments by perfor ...

WGU C172 Study Guide Set Questions and Answers Already Passed NIC ✔✔What functions at the data link by using a unique MAC address? Router ✔✔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 ✔✔used as a shared storage for all member nodes of a LAN Layer 1 ✔✔Physical Layer Layer 2 ✔✔Data link layer Layer 3 ✔✔Network layer Layer 4 ✔✔Transport layer Layer 5 ✔✔Session layer Layer 6 ✔✔Presentation layer Layer 7 ✔✔Application layer Physical layer ✔✔provides the electrical and mechanical connection to the network Data Link layer ✔✔Handles error recovery, flow control (synchronization), and sequencing Ethernet 802.3 standard defined here Network layer ✔✔Accepts outgoing messages and combines messages or segments into packets, adding a header that includes routing information Transport layer ✔✔Ensures error-free packets. Segments/reassembles packets and handles flow control Session layer ✔✔provides the control functions necessary to establish, manage and terminate the connections as required to satisfy the user request Presentation layer ✔✔accepts and structures the messages for the application. translates the messages for the application. responsible for data compression and encryption Application layer ✔✔Interacts with application programs that incorporate a communication component such as your Internet browser and email Physical layer examples ✔✔NICs, twisted-pair cables, fiber, UTP, EIA/TIA, DSL, ISDN Data link layer examples ✔✔MAC addresses, ARP, PPP, HDLC Network layer examples ✔✔IP, IPX, IPSec, IPv4 and IPv6 Transport layer examples ✔✔TCP, UDP Session layer examples ✔✔NFS, SQL, PPTP, PAP, SCP Presentation layer examples ✔✔ASCII, JPEG, GIF, SSL Application layer examples ✔✔HTTP, FTP, SMTP (email) the network ✔✔OSI layer related to the function of the IP protocol suite data link ✔✔OSI layer responsible for organizing how bits are passed over the physical layer between devices within the same collision domain transport ✔✔makes sure packets of data are received correctly and resend them if they are not TCP and UDP ✔✔performs functions of OSI layer 4 Application TCP/IP ✔✔Application, Presentation and Session OSI Transport TCP/IP ✔✔transport OSI Internet TCP/IP ✔✔Network OSI Network interface TCP/IP ✔✔Data link and physical OSI FTP protocol ✔✔allows a user to authenticate to a remote server, navigate the servers file structure and upload and download files Traceroute ✔✔a network diagnostic tool that displays the path packets take between two endpoints determines the number of hops required for a packet to reach its destination ipconfig ✔✔determines configuration details such as IP address, subnet mask, and default gateway ipconfig /all ✔✔Enables the MAC address information to be displayed from the command prompt along with IP address, subnet mask, and default gateway nslookup ✔✔determine ip address of domain name ping ✔✔determine ip address and latency in network nmap ✔✔an open-source port scanning tool that identifies hosts and what operating systems and services are running on them netstat -a ✔✔displays ip ports currently open on the Windows OS patch panel ✔✔a device used to organize network cables as they run between switches and other network devices ethernet ✔✔what uses UTP cables and CSMA/CD to manage connected devices access to the wire? CAT3 ✔✔used in early 90s; up to 16mbps CAT5 ✔✔10BASET, 100BASET, 100 MHz, 100 mbps CAT5e ✔✔1000 BASET, 1gbps, 100 meters - full duplex CAT6 ✔✔250 MHz, 1000mbps/10gbps at distances shorter than 100 meters CAT6a ✔✔500 MHz, 10 gbps CAT7 ✔✔600 MHz, 10 gbps CAT7a ✔✔1000 MHz, 10 gbps 11 channels ✔✔there are 14 channels, how many does North American use? 802.11a (wireless-A) ✔✔this standard can provide data transfer rates up to 54mbps and an operating range up to 75 feet. operates at 5ghz and uses OFDM 802.11b (Wireless-B) ✔✔This standard can provide data transfer rates up to 11Mbps with ranges of 100-150 feet. It operates at 2.4GHz and uses DSSS 802.11g (Wireless-G): ✔✔This standard can provide data transfer rates up to 54Mbps and an operating range up to 150 feet. It operates at 2.4GHz and uses DSSS or OFDM. 802.11n (Wireless-N): ✔✔This high-speed wireless connectivity promises data transfer rates over 200Mbps. It operates at 2.4GHz and 5GHz and uses DSSS or OFDM. 802.11ac: ✔✔This is the next generation of high-speed wireless connectivity. This technology promises data rates up to 1Gbps and operates over the 5GHz band. 802.11i ✔✔This standard for WLANs provides improved data encryption for networks that use the 802.11a, 802.11b, and 802.11g stand