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15 Cards in this Set
- Front
- Back
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What device typically connects to a four-wire line provided by a telco in a leased line?
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CSU/DSU
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Which field of the HDLC header in Cisco routers does Cisco add beyond the normal standard?
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The Type field
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What service, also known as Ethernet emulation, allows two routers to behave as if they were connected via a fiber Ethernet link?
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Ethernet over Multiprotocol Label Switching (EoMPLS)
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Which two common internet service types offer asymmetric speeds?
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DSL and Cable
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What service functions as a full-duplex crossover Ethernet link between two routers across a network?
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Leased Line or Leased Circuit
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At what speed does a T1 leased line transmit data?
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1.544 Mbps
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Customer premises equipment (CPE) refers to what devices essential to a WAN link?
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The router, Serial Interface Card and CSU/DSU
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What two units of speed must all leased lines be divisible by?
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64 kbps or 1.5 Mbps
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Between the Data Terminal Equipment (DTE) and Data Communications Equipment (DCE) cables, what gender is each cable and what are they used for?
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DTE is male, DCE is female. They are used to connect customer routers to the CSU/DSU and vice versa, OR to simulate a WAN connection when used with each other
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What five fields make up an High-Level Data Link Control (HDLC) frame?
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Flag, Address, Control, Type, and Frame Check Sequence
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If your PC on network A sends a packet of data to network B, which is connected via WAN, what device is the destination MAC address of the initial packet?
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Network A's router connected to the WAN
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What technology offers an alternative to Telecommunications-based WANs in the form of Ethernet?
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1000BASE-LX or 1000BASE-ZX, Ethernet fiber cabling
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What protocol does EoMPLS use to forward packets?
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Ethernet
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What service is uses a short telecom WAN link, usually for consumer purposes?
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Digital Subscriber Line (DSL)
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What service provider-side device splits telecommunications data between voice and network data?
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DSL Access Multiplexer (DSLAM)
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