Exam 7: WANs and Remote Connectivity

Explain how ATM relies on virtual circuits.

Define and describea PSTN.

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 each site is directly connected to no more than two other sites in a serial fashion.

Describe two important considerations when designing a VPN.

The portion of the PSTN that connects any residence or business to the nearest CO is known as the ____.

SONET specifies framing and multiplexing techniques at the Physical layer.

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 -Incorporates many directly interconnected sites.

ISDN PRI uses ____ B channels and one 64-Kbps D channel.

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 -Provides equal capacity for data traveling both upstream and downstream.

___________________________________ is an open source system designed to allow one workstation to remotely manipulate and receive screen updates from another workstation.