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Chapter 5 CSAT

John Ventura Engineering Englisch 93 Karten

WLAN protocols

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  1. 1PANCommonly uses Bluetooth to connect mice, keyboards, phones, and tablets.
  2. 2LANA wired network consisting of a switch and network devices in a limited geographical area.
  3. 3VLANExtends beyond a traditional LAN and groups users based on administratively defined boundaries such as department or floor
  4. 4WLANConnects multiple wireless devices and uses an access point.
  5. 5WMNConnects multiple wireless access points together to expand the wireless network.
  6. 6MANA network that spans a city.
  7. 7WANA network that spans a large geographical area.
  8. 8VPNConnecting to a network such as a company network across an unsecure network
  9. 9Analog Telephone acceusDialup. Uses an analog modem to call another modem
  10. 10ISDNIntegrated Services Digital Network-
    More bandwith than dial up can carry voice video and data
  11. 11Broadbanduses different frequencies to send multiple signals over media.
  12. 12DSLDigital subscriber line
    always on technology that uses phone lines; voice and data carried on different frequencies
  13. 13CableUses a cable modem to connect to a traditional cable TV network; shares the network with multiple subscribers.
  14. 14FiberHigh bandwidth connection used in backbone networks, large enterprise environments, large data centers, and now part of some home internet connections.
  15. 15Line of site wirelessalways on technology that uses radio signals for connecting to the internet.
    Must have clear path and clear weather because it is affected by it
  16. 16Satellitebroadband technology for remote areas
    Uses a satellite dish.
    ineffective for gaming and VoIP
  17. 17Cellularrelies on cell towers to create a network used by cell phones and connectivity to the internet
  18. 18Hotspot and tetheringCell phone option that allows another device to connect to the internet using Wi-Fi, Bluetooth, or USB cable
  19. 192 Transport layer protocolsTCP UDP
  20. 20TCPUsed by Email, HTTP, reliable and resends lost data. Delivers in sequenced order
  21. 21UDPLittle overhead or data checking. Unreliable, fast doesn't resend lost data. IP telephony, Streaming live video. TFTP
  22. 223 World wide web protocolsDNS HTTP HTTPS
  23. 23DNS (Domain name service)It finds the IP address associated with a registered internet domain for web, email. etc. Uses UDP and TCP. 53 ports
  24. 24HTTP (Hypertext Transfer protocol)Set rules for exchanging text, graphic images, sound and video. Uses TCP 80 ports.
  25. 25HTTPSBrowser uses encryption and authenticates your connection with webserver. TCP and UDP. 443 ports
  26. 264 Email and identity management protocolsSMTP POP3 IMAP LDAP
  27. 27SMTP (simple mail transfer)Send email from clients to an email server. TCP and 25 ports
  28. 28POP3 (post office protocol 3 )Used by email clients to retrieve messages from email server. TCP and 110 ports
  29. 29IMAP (internet messages Access protocol)Retrieve email messages from server. more advance than POP3 and more advantages
    TCP. 143 ports
  30. 30LDAP ( Lightweight Directory Access Protocol)Used to maintain user identity directory information that can be shared across networks and systems. Manages information of users and network resources. Can authenticate users on multiple devices TCP UDP 389 port
  31. 313 Remote access protocolsSSH Telnet RDP
  32. 32SSH ( Secure Shell )Provides strong authentication and encrypted data transport between client and remote computer. Provides Command line. TCP 22 ports
  33. 33TelnetInsecure remote access protocol that provides command line. TCP, 23 ports
  34. 34RDP (remote desktop protocol)Developed by microsoft to provide remote access. Useful for tech support. but it can provide the remote user with complete control of the destination. Use TCP, UDP, 3389 ports
  35. 354 Network operation protocolsDHCP, NetBIOS, SNMP, SLP
  36. 36DHCP (Dynamic Host Configuration Protocol)Automatically provides IP address to network host. UDP 67/68 ports
  37. 37NetBIOs (NetBT)Provides a system through which older computer applications can communicate over a large TCP/IP networks. Uses UDP, TCP. 137-139 Ports
  38. 38SNMP ( Simple network management protocol)Enables network administrators to monitor network operations from centralized monitoring stations. 161/162 port UDP
  39. 39SLP (service location protocol)Allows computers and other devices to locate services on LAN without previous configuration. Uses UDP,TCP 427 ports
  40. 405 File transport and management protocolFTP FTP21 TFTP SMB,CIFS AFP
  41. 41FTP20 and FTP21Transfer files between computers, Insecure SSH file transfer protocol must use port 22
    port 21 establishes connection between the client and FTP server.
  42. 42WLAN protocolsWLAN protocols
  43. 43Bluetooth7 devices, Create PAN. 802.15.1
    2.4 to 2.458 GHz frequency range
  44. 44RFIDUsed to identify items
    Passive (rely on RFID reader to activate and read)
    Active * Have a battery to broadcast the ID up to 100 meters)
    125MHz to 960MHz Radio frequency range
  45. 45NFC (Near field communication )Need to be in close proximity to exchange data.
    Used for payments, printing public parking etc.
  46. 46ZigbeeManage client in Wireless mesh network. Manages form cellphone.
    IEEE 802.15.4
    868MHz to 2.4GHz up to 20 meters
    65000 Devices and data speed up to 250kb/s
  47. 47Z-waveProprietary standard, has public version
    232 devices in wireless mesh network and
    data speed up to 100kb/s
  48. 48Cellular generations1g/2g, 2.5g, 3g, 4g, LTE, 5g
  49. 491G/2GFirst generation was analog calls only. 2G introduced digital voice, conference calls, and caller ID with speeds less than 9.6 Kb/s
  50. 502.5Gsupports web browsing, short audio and video clips with speeds up to 237 Kb/s
  51. 513Gfull motion video and streaming music at speeds up to 2 Mb/s
  52. 524GIPv6, IP-based voice, gaming services, high quality multimedia at speeds up to 672 Mb/s
  53. 53LTE (Long Term Evolution)means it meets the 4G speed standards and improves connectivity while in motion. Speeds up to 100 Mb/s when mobile and up to 1 Gb/s when stationary
  54. 545Gsupports augmented reality (AR), virtual reality (VR), smart homes, smart cars, and data transfer between devices. Download speeds up to 3 Gb/s; upload speeds up to 1.5 Gb/s.
  55. 553 Client server rolsFile client to server
    Web client to server
    Email client to server
  56. 56Network ServicesDHCP, DNS, HTTP
  57. 57DHCP serverserver provides IP addressing information
  58. 58DNS serverserver translates domain names such as cisco.com to an IP address
  59. 59Print serverCan control multiple printers
    Allows centralized print job administration
  60. 60File Serverallows clients to access files using a specific protocol
    FTP (File Transfer Protocol)
    FTPS (File Transfer Protocol Secure)
    SFTP (Secure Shell File Transfer Protocol)
    SCP (Secure Copy)
  61. 61Web Serverprovides web resources using these protocols
    Hypertext Transfer Protocol (HTTP)
    TCP port 80
    Secure HTTP (HTTPS)
    Secure Sockets Layer (SSL)
    Transport Layer Security (TLS)
    TCP port 443
  62. 62Mail ServerClient communicates with server in order to reach a different client
    Protocol used to send email
    Simple Mail Transfer Protocol (SMTP)
    Protocols used to retrieve email
    Post Office Protocol (POP)
    Internet Message Access Protocol (IMAP)
  63. 63Proxy Serveract on behalf of a client, thus hiding the real internal host
    Used to cache frequently accessed web pages
  64. 64Authentication ServerAuthentication, Authorization, and Accounting (AAA) Allows access to a network device or a particular networkAuthentication Server
  65. 65Syslog Serverstores network messages sent by networking devices.
  66. 66Basic network devicesRepeaters, Hub bridge
  67. 67RepeatersAlso called extenders because they regenerate the signal so it can be sent further.
  68. 68HubReceives data on one port and sends to all other ports.
  69. 69BridgeDivides a network into two or more segments and tracks which device is on each segment.
  70. 70SwitchesEthernet switches record MAC addresses for each device connected to the switch
  71. 71Wireless access points (APs)provide access to a wireless network for a limited range.
  72. 72RoutersIt connect networks.
    Use an IP address to forward traffic to other networks
    Can be a multipurpose device (integrated router) that includes switching and wireless capabilities
  73. 73Security DevicesFirewall, Integrated Router, ACL, IDS, IPS,UTMs, Endpoint Management Server
  74. 74Firewallsprotects data and devices connected to a network. use access control lists (ACLs) which are rules used to determine whether data is permitted (allowed through) or denied.
  75. 75Intrusion Detection System (IDS)monitors traffic and is a passive system.
  76. 76Intrusion Prevention System (IPS)actively monitors traffic and takes action when needed.
  77. 77UTMs Universal threat managementis an all-in-one security appliance. Features are vendor-specific. Includes
    Firewall services
    IDS/IPS services
    Additional security services against Zero Day, Denial of Service (DoS) Distributed Denial of Service (DDoS), and spyware
    Proxy and email filtering
    Network access control
    VPN services
  78. 78Endpoint Management Serverserver monitors end devices such as PCs, laptops, servers, tablets, printers, etc.
  79. 79Legacy and Embedded SystemsA___ system is a device on the network no longer supported, but still in operation. An embedded system is a device built into something else such as an appliance. ___microchips are contained in legacy systems and embedded systems
  80. 80Patch PanelA centralized place where network cables attach to the back. this thing are used to make a connection to another patch panel which connects to a different wiring closet, or to a device such as a switch mounted nearby.
  81. 81Power over Ethernet and Ethernet over PowerPoE is a standard for providing power to devices such as APs, cameras, or IP phones through a cable.
    Ethernet over Power (powerline networking) uses existing electrical wiring to create a network.
  82. 82Network toolsWire cutter, Wire stripper, Crimper (used to securely attach an rj0-45 con), Punch down tool. Multimeter, Cable tester, Tone generator, Wifi Analyzer, Loopback adapter
  83. 83Cable typesTwisted-pair
    Coaxial
    Fiber-optic
  84. 84Coaxial CablesCopper or aluminum. Used in cable TV systems and satellite communication systems
    Harder to install, more expensive, and harder to troubleshoot than twisted-pair cabling
  85. 85Twisted-Pair CablesUnshielded twisted-pair
    Shielded twisted-pair
  86. 86UTP (twisted pair cables)Most common
    Four pairs of color-coded wires
    Prone to electromagnetic interference (EMI) and radio frequency interference (RFI)
  87. 87STP (twisted pair cables)Better protection against EMI and RFI
    More expensive and harder to install
  88. 88Speed of Twister pair categoryCat 5 UTP - 100mb/s at 100MHz First widely adapted
    Cat5e UTP - 1gb/s at 100MHz Higher than cat 5. more twist per foot to prevent EMI and RFI
    Cat6 UTP - 1gb/s at 250Mhz (cat 6a - 500mhz) - More twist and higher standard
  89. 89Fiber opticsUse light to transmit signal. Not affected by EMI or RFI
  90. 902 types of fiber mediaSingle-mode fiber (SMF)
    Multimode fiber (MMF)
  91. 91Single-mode fiber (SMF)Small core
    Uses laser technology to send one beam of light
    Long distances
  92. 92Multimode fiber (MMF)Larger core
    Uses LEDs to send light
    Light is injected at different angles
    Cheaper
    Bandwidth up to 10 Gb/s up to 550 meters
  93. 93—

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Engineering Karteikarten am Chapter 5 CSAT, erstellt von John Ventura am 17/09/2021.
Erstellt von
John Ventura
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