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Fichas

204-2 CH3

Thea Usita Inglés 83 fichas

Fichas del conjunto (83)

  1. 1This provide teleworkers with high-speed connection options to business locations and to the Internet.Broadband solutions
  2. 2It is a broad term referring to conducting work by connecting to a workplace from a remote location, with the assistance of telecommunications.Teleworking
  3. 3ISPs value the ___ because of the authentication, accounting, and link management features.Point-to-Point Protocol (PPP)
  4. 4Ethernet links do not natively support PPP. What is the solution made to this problem?PPP over Ethernet (PPPoE)
  5. 5___ are used to improve the security of data across the Internet.Virtual Private Networks (VPNs)
  6. 6A ___ is used to create a private communication channel (also called tunnel) over a public network.VPN
  7. 7VPNs rely on ___ to provide security across the Internet.Internet Protocol Security (IPsec)
  8. 8___ is a tunneling protocol developed by Cisco that can encapsulate a wide variety of protocol packet types inside IP tunnels, but it doesn't support encryption.Generic Routing Encapsulation (GRE)
  9. 9GRE creates a ___ to Cisco routers at remote points, over an IP internetwork.virtual point-to-point link
  10. 10___ is routing protocol used between autonomous systems.Border Gateway Protocol (BGP)
  11. 11The ___ uses a coaxial cable that carries radio frequency (RF) signals across the network.cable system
  12. 12The cable system uses a ___ that carries radio frequency (RF) signals across the network.coaxial cable
  13. 13Cable operators typically deploy ___ networks to enable high-speed transmission of data to cable modems located in a SOHO.hybrid fiber-coaxial (HFC)
  14. 14The ___ is the international standard for adding high-bandwidth data to an existing cable system.Data over Cable Service Interface Specification (DOCSIS)
  15. 15In the cable system, the main receiving antennas and satellite dishes are located at the ___.Antenna Site
  16. 16A ____ links a remote antenna site to a headend or a remote headend to the distribution network. This can be microwave, coaxial supertrunk, or fiber optic.Transportation Network
  17. 17This is where signals are first received, processed, formatted, and then distributed downstream to the cable network.Headend
  18. 18(Amplifier) The ___ is the backbone that distributes signals throughout the community service area to the feeder and typically uses 0.760 inch (19 mm) diameter coaxial cable.trunk
  19. 19(Amplifier) The ___ branches flow from ta trunk and reach all of the subscribers in the service area via coaxial cable, usually 0.50 inch (13 mm)feeder
  20. 20A ___ connects the subscriber to the cable services. It is a connection between the feeder part of a distribution network and the subscriber terminal device.Subscriber drop
  21. 21This cable component is found at the headend of the cable operator.Cable Modem Termination System (CMTS)
  22. 22This cable component is found on the subscriber end.Cable Modem (CM)
  23. 23The ___ is a mixed optical-coaxial network in which optical fiber replaces the lower bandwidth coaxial cable.HFC network
  24. 24In a modern HFC network, typically ___ to ___ active data subscribers are connected to a cable network segment, all sharing the upstream and downstream bandwidth.500
    2,000
  25. 25Under the new ___ standard, this [HFC network] bandwidth can be up to 10 Gb/s downstream and up to 1 Gb/s upstream.DOCSIS 3.1
  26. 26A ___ is a component that exchanges digital signals with cable modems on a cable network.Cable Modem Termination System (CMTS)
  27. 27The trunk portion of the cable network is usually ___ cable.fiber optic
  28. 28This convert optical signals to RF signals.Node
  29. 29This enables you to receive data at high speed. Typically, it is attached to a standard Ethernet card in the computer.Cable Modem
  30. 30This refers to a distribution network segment (feeder segment) where there is as many as 500 to 2000 subscribers.Distribution Area
  31. 31This originate from the node and carry RF signals to the subscribers.Coaxial Cable
  32. 32A ___ is a means of providing high-speed connections over installed copper wires.Digital Subscriber Line (DSL)
  33. 33___ provides higher downstream bandwidth to the user than upload bandwidth.ADSL
  34. 34___ provides the same capacity in both directions (downstream and upload).SDSL
  35. 35For satisfactory ADSL service, the loop must be less than ___.3.39 miles (5.46 km)
  36. 36This connects the computer of the teleworker to the DSL. Usually it is a DSL modem connected to the computer using a USB or Ethernet cable.Transceiver
  37. 37It is located at the CO of the carrier and combines individual DSL connections from users into one high-capacity link to an ISP, and therefore, to the Internet.DSLAM
  38. 38Most municipal wireless networks use a ___ of interconnected access points.mesh
  39. 39This is a general term for Internet services from a mobile phone or from any device that uses the same technology.Wireless Internet
  40. 40These are major changes to the mobile phone companies’ wireless networks through the evolution of the generations of wireless mobile technologies.2G/3G/4G Wireless
  41. 41It is a newer and faster technology considered to be part of 4G technology.Long-Term Evolution (LTE)
  42. 42___ services are used in locations where land-based Internet access is not available, or for temporary installations that are mobile.Satellite Internet
  43. 43___ is a wireless technology for both fixed and mobile implementations.WiMAX (Worldwide Interoperability for Microwave Access)
  44. 44WiMAX has largely been replaced by ___ for mobile access and ___ or ___ for fixed access.LTE
    cable
    DSL
  45. 45This telecommunication company shut down its WiMAX networks in early 2016.Sprint
  46. 46A ___ should be performed to determine the best [broadband] solution.cost-versus-benefit analysis
  47. 47With this factor, bandwidth is shared by many users, upstream data rates are often slow during high-usage hours in areas with over-subscription.Cable
  48. 48With this factor, Limited bandwidth that is distance sensitive (in relation to the ISP’s central office), upstream rate is proportionally quite small compared to downstream rate.DSL
  49. 49This factor requires fiber installation directly to the home.Fiber-to-the-Home
  50. 50With this factor, coverage is often an issue, even within a SOHO where bandwidth is relatively limited.Cellular/Mobile
  51. 51Most municipalities do not have a mesh network deployed; if it is available and the SOHO is in range, then this factor is a viable option.Wi-Fi Mesh
  52. 52This factor is expensive and has limited capacity per subscriber; often provides access where no other access is possible.Satellite
  53. 53PPPoE creates a ___ over an Ethernet connection.PPP tunnel
  54. 54The modem converts the Ethernet frames to PPP frames by stripping the ___.Ethernet headers
  55. 55PPP negotiation can be verified by using this command.debug ppp negotiation
  56. 56This command is used for viewing current PPPoE sessions.show pppoe session
  57. 57This command is used for adjusting the TCP MSSip tcp adjust-mss [size]
  58. 58A ___ is a communications environment in which access is strictly controlled to permit peer connections within a defined community of interest.VPN
  59. 59Today, a secure implementation of VPN with encryption, such as ___, is what is usually meant by virtual private networking.IPsec VPNs
  60. 60This is necessary when implementing VPNs.VPN gateway
  61. 61An ___ is a standalone firewall device that combines firewall, VPN concentrator, and intrusion prevention functionality into one software image.[Cisco] Adaptive Security Appliance (ASA)
  62. 62In this benefit, VPNs enable organizations to use cost-effective, third-party Internet transport to connect remote offices and remote users to the main site.Cost savings
  63. 63In this benefit, VPNs enable organizations to use the Internet infrastructure within ISPs and devices, which makes it easy to add new users.Scalability
  64. 64In this benefit, VPNs can include security mechanisms that provide the highest level of security by using advanced encryption and authentication protocols that protect data from unauthorized access.Security
  65. 65___ VPNs connect entire networks to each other, for example, they can connect a branch office network to a company headquarters network.Site-to-site
  66. 66The ___ is responsible for encapsulating and encrypting outbound traffic for all traffic from a particular site.VPN gateway
  67. 67The VPN gateway then sends the outbound traffic through a ___ over the Internet to a peer VPN gateway at the target siteVPN tunnel
  68. 68Are Site-to-Site VPNs STATIC or DYNAMIC?STATIC
  69. 69___ VPNs are used to connect individual hosts that must access their company network securely over the Internet.Remote-access
  70. 70Are Remote Access VPNs STATIC or DYNAMIC?DYNAMIC
  71. 71This is a Cisco software solution for building multiple VPNs in an easy, dynamic, and scalable manner.Dynamic Multipoint VPN (DMVPN)
  72. 72This is one example of a basic, non-secure, site-to-site VPN tunneling protocol.Generic Routing Encapsulation (GRE)
  73. 73What is the IETF standard for GRE?RFC 2784
  74. 74In the outer IP header, ___ is used in the protocol field to indicate that a GRE header will follow.47
  75. 75GRE itself is ___; by default, it does not include any flow-control mechanisms.stateless
  76. 76These are used to exchange routing information within a company network or an autonomous system (AS).IGPs
  77. 77This is an Exterior Gateway Protocol (EGP) used for the exchange of routing information between autonomous systems and content providers.Border Gateway Protocol (BGP)
  78. 78On what port are BGP updates encapsulated over TCP?port 179
  79. 79This routing protocol are used to route traffic within the same organization and administered by a single organization.IGP
  80. 80___ is used to route between networks administered by two different organizations.BGP
  81. 81Two routers exchanging BGP routing information are known as ___.BGP peers
  82. 82This type of BGP is the routing protocol used between routers in different autonomous systems.External BGP (eBGP)
  83. 83This type of BGP is the routing protocol used between routers in the same AS.Internal BGP (iBGP)

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Fichas sobre 204-2 CH3, creado por Thea Usita el 18/03/2018.
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Thea Usita
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