Test Bank Solution Manual for Computer Network Principles Already Passed

Test Bank Solution Manual for Computer Network Principles Already Passed LAN - Answers Local Area Network: Network infrastructure for a small area ie. School or Office WAN - Answers Wide Area Network: Network infrastructure for a large Geographical area ie. City MAN - Answers Metropolitan Area Network: Larger than LAN but smaller than WAN WLAN - Answers Wireless LAN SAN - Answers Storage Area Network: Network infrastructure specifically designed for large data storage Extranet - Answers Secure network for selected users ie. customers Intranet - Answers Network within a company Cable Connection - Answers Carried on the same Co-Axial cable as Tv DSL Connection - Answers Runs over the phone line but can multiplex; Slower upload than download speeds Cellular Network - Answers Sends data over exiting cellular networks Satellite Connection - Answers requites a direct line of sight, but can be strong connection Dial-up Connection - Answers Slow access over phone lines with very limited bandwidth Dedicated Lease line - Answers Direct connects geographically separate company offices (Very Expensive) Metro Ethernet - Answers Direct line from providers to business customers over copper or fiber-optic cable 4 Keys to Network Reliability - Answers 1. Fault Tolerance (redundant connections) 2. Scalability 3. (QoS) Quality of Service (managing packet priorities) 4. Security Circuit-Switched Networks - Answers One route is selected and the circuit is dedicated for the duration of the call/ data transfer Packet-Switched Networks - Answers Message is broken into small parts and transmitted via multiple routes to be re assembled at the destination Tier 1 ISP - Answers Provides National and International Connections to the Internet Tier 2 ISP - Answers Regional providers that pay Tier 1 ISP's to connect to the network Tier 3 ISP - Answers Local ISP that will work with end users Powerline Networking - Answers Providing access over electric lines in old buildings that can't be re-wired WISP - Answers Wireless Internet Service Provider, used in rural areas where DSL and Cable are not options Zero-Day/Hour Attacks - Answers Attacks as soon as a vulnerability becomes known ACL - Answers Access Control Lists: Filters traffic for permissions settings ie. rwx or r-x IPS - Answers Intrusion Prevention Systems: Identifies fast spreading threats VPN - Answers Virtual Private Network: Provides secure remote network access Kernel - Answers Communicates between hardware and software Shell - Answers Either GUI or CLI to connect users to the Kernel Router Access: Console Port - Answers Direct Plug into the router, used for initial configuration Router Access: Telnet - Answers Allows for control of the router via a network connection Router Access: SSH - Answers Secure version of Telnet, allows for control of the router via a network connection Router Access: AUX - Answers Access via telephone dialup Unicast - Answers Packet delivery to just 1 destination Multicast - Answers Packet delivery to more than 1 destination Broadcast - Answers Packet delivery to all devices on the network Layer 1 - Answers OSI: Physical Layer TCP/IP: Network Access Layer Layer 2 - Answers OSI: Data Link Layer TCIP/IP: Network Access Layer Layer 3 - Answers OSI: Network Layer TCIP/IP: Internet Layer Layer 4 - Answers OSI: Transport Layer TCIP/IP: Transport Layer Layer 5 - Answers OSI: Session Layer TCIP/IP: Application Layer Layer 6 - Answers OSI: Presentation Layer TCIP/IP: Application Layer Layer 7 - Answers OSI: Application Layer TCIP/IP: Application Layer DNS - Answers Domain Name System: Translates domain names into IP Addresses TCIP/IP: Application Layer BOOTP - Answers Bootstrap Protocol: Allows a workstation to discover its own IP TCIP/IP: Application Layer DHCP - Answers Dynamic Host Configuration Protocol: Dynamically assigns IP address TCIP/IP: Application Layer SMTP - Answers Simple Mail transfer Protocol: Enables Clients/Servers to email servers TCIP/IP: Application Layer POP - Answers Post Office Protocol: Enables Clients to retrieve email from the server TCIP/IP: Application Layer IMAP - Answers Internet Message Access Protocol: Maintains email on servers and allows clients to access TCIP/IP: Application Layer TFTP/ FTP - Answers (Trivial) File Transfer Protocol: Sets rules for hosts to accept and transfer files TCIP/IP: Application Layer HTTP - Answers Hypertext Transfer Protocol: Set of rules for exchanging multimedia on the web TCIP/IP: Application Layer UDP - Answers User Diagram Protocol: Enables one host to send packets to another host without confirmation