Module 8
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Networking Technologies Common types | LAN, WLAN, AND WAN
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| LAN | term often used to describe wired local area networks (Ethernet Network)
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| WLAN | describes a wireless LAN (WiFi 802.11)
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| WAN | describes a wide area network, technologies that connect separate LANs
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| What is a data segment? | Data transmitted on a network that has been broken up
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| Baseband Technologies | Ethernet
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| Broadband Technologies | Cable, DSL, Satellite, Fiber-based
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| Cable | uses cable TV infrastructure
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| DSL | uses Public Switch Telenetwork (PSTN) infrastructure
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| Satellite | uses GEO synchronous satellites, connecting devices may be stationary or mobile
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| Fiber-based | uses a fiber-optic network
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| This company runs fiber all the way to the house or business: | Verizon
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| 802.11 Wi-Fi | oVarious IEEE standards (802.11b/g/n) oLess secure than wired networks oPublic Wi-Fi access: Hot Spots
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| The name of the wireless access point is called: | Service Set Identifier (SSID)
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| 802.16 Wi-Max | oVarious IEEE standards (802.16d/e) oUses base stations (cell towers)
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| Cellular | oVarious Technologies (TDMA, GSM, CDMA, 3G, 4G) oUses base stations (cell towers) oPC accessible with an Internet Card (Air Card)
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| Bluetooth | oShort range technology often used for device to device connections
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| Dialup Technology | •Mature technology that uses PSTN infrastructure, often follows V.92 standard •Maximum theoretical throughput: 56K
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| Network Adapters (NIC) | oOn-board or discrete components (including USB) oIdentified by technology (Ethernet, 100BaseT, etc.)
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| The NIC number used to identify the adapter on the network is called | MAC address
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| Cables/Connectors (fiber and copper) | oVarious cable and connector types oMost common copper-based cabling in use today: UTP oFinished cables types: straight-through (patch cords) and crossover
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| Devices | oHubs – repeat all packets received to all connected nodes oSwitches – direct packets to addressed device oWAP – bridges WLAN to LAN, connects hotspots together
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| This device manages traffic between two (different) networks: | Routers
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| Windows on a Network | •Client/Server Applications •Network communications can be broken into layers •Service Identifications
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| Client/Server Applications | oWeb Browser/Web Server oEmail Client/Exchange Server oFTP Client/FTP Server
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| Service Identifications | oPort/Port Address/Port Number – identifying numbers oSocket Address – combination of IP Address and port number (192.168.0.10:23)
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| The port number used by SMTP is: | 25
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| IP Addresses | Identify the PC (node) on the network
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| IP Addresses two current versions | IPv4 and IPv6
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| IPv4 | 32-bits, dotted decimal notation, three classes (A, B & C), uses a subnet mask Example: Class C, ip address:192.168.0.1, subnet mask: 255.255.255.0
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| IPv6 | 128-bits, written in hexadecimal, various types, no subnet mask Example: 12:34:56:AB:10::37:55:12:B5:DC:FF:18
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| IP Address Assignments | oPublic and private addresses oDynamically and statically assigned oReserved addresses: broadcasts, loopback, and network identifiers
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| A computer set to obtain a DHCP address fails to lease an address, what address will it use? | Automatic Private IP Address (APIPA)
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| Hostname/computer name | identifies the PC on the network
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| Domain Name/Workgroup Name | identifies the network FQDN: consists of hostname and domain name
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| DNS | resolves the FQDN to an IP Address
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| TCP/IP | oIndividual Protocols working together to mange communication
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| Application Protocols | http, https, smtp, pop, imap, ftp, etc.
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| Communication Protocols | tcp, udp, ip, arp, icmp, igmp, etc
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| Network Protocols | Ethernet, ATM, token ring, etc
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| Virtual Private Networks (VPN) | oMethod of securing data traveling across a public telecommunications network oTechnique is called tunneling; uses encrypted data packets
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| Which VPN tunneling protocol is considered the weakest? | Point to Point Tunneling Protocol (PPTP)
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| TCP/IP Utilities | Command line troubleshooting tools
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| Tools and Utilities for Troubleshooting Networks | ping, ipconfig, telnet, nslookup, tracert, net, netstat
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| ping | connectivity test, uses echo requests, has various switches
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| ipconfig | configuration data, limited control over dynamic data (renew IP address)
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| telnet | remote node communication, unsecure
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| nslookup | provides access to namespace information
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| tracert | hop-by-hop connectivity test, uses echo requests
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| net | several commands in one, all focused on network connections
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| netstat | network activity statistics
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| Remote Desktop | oAccess to another PC across the network oAvailable on certain versions of Windows
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| Remote Assistance | oAccess to another PC across the network oAvailable on certain versions of Windows
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| What is a technician performing when he enters the command: nslookup 170.10.0.1? | Reverse Lookup
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| Identify the port number used by Remote Desktop. | 3389
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| Hubs | repeat all packets received to all connected nodes
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| Switches | direct packets to addressed device
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| WAP | bridges WLAN to LAN, connects hotspots together
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