Exam 7: WANs and Remote Connectivity

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At the customer's demarcation point,either inside or outside the building,T-carrier wire pairs terminate with a ____.

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B

Define the term xDSL and name the better known DSL varieties.

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The term xDSL refers to all DSL varieties,of which at least eight currently exist.The better known DSL varieties include ADSL (Asymmetric DSL),G.Lite (a version of ADSL),HDSL (High Bit-Rate DSL),SDSL (Symmetric or Single-Line DSL),VDSL (Very High Bit-Rate DSL),and SHDSL (Single-Line High Bit-Rate DSL)- the x in xDSL is replaced by the variety name.

____ networking refers to dialing directly into a private network's or ISP's remote access server to log on to a network.

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C

Broadband cable requires many subscribers to share the same local line,thus raising concerns about ____ and actual (versus theoretical)throughput.

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MATCHING Match each item with a statement below: a.bus topology WAN f.upstream b.star topology WAN g.asymmetrical communications c.mesh topology WAN h.symmetrical technology d.tiered topology WAN i.signal level e.downstream -Occurs when data travels from the customer to the carrier's switching facility.

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The data rate of a particular SONET ring is indicated by its ____,a rating that is internationally recognized by networking professionals and standards organizations.

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Describe the most important advantage of SONET.

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____________________ are connections between network nodes that,although based on potentially disparate physical links,logically appear to be direct,dedicated links between those nodes.

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A ____ converts digital signals into analog signals for use with ISDN phones and other analog devices.

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The PPTP VPN tunneling protocol is based on technology developed by Cisco.

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Define and describe RRAS.

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MATCHING Match each item with a statement below: a.bus topology WAN f.upstream b.star topology WAN g.asymmetrical communications c.mesh topology WAN h.symmetrical technology d.tiered topology WAN i.signal level e.downstream -Occurs when data travels from the carrier's switching facility to the customer.

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Describe the fundamental properties WANs and LANs have in common.

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WANs typically send data over ____ available communications networks.

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____________________ is the remote virtual computing software that comes with Windows client and server operating systems.

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MATCHING Match each item with a statement below: a.bus topology WAN f.upstream b.star topology WAN g.asymmetrical communications c.mesh topology WAN h.symmetrical technology d.tiered topology WAN i.signal level e.downstream -Refers to the T-carrier's Physical layer electrical signaling characteristics as defined by ANSI standards in the early 1980s.

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ATM is a WAN technology that functions in the Data Link layer.

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MATCHING Match each item with a statement below: a.bus topology WAN f.upstream b.star topology WAN g.asymmetrical communications c.mesh topology WAN h.symmetrical technology d.tiered topology WAN i.signal level e.downstream -Contain sites that are connected in star or ring formations are interconnected at different levels,with the interconnection points being organized into layers to form hierarchical groupings.

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____ is the preferred communications protocol for remote access communications.

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____ is the standard for connecting home computers to an ISP via DSL or broadband cable.

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