Exam 2: How Lan and Wan Communications Work

Ethernet transport (the IEEE 802.3 specification), takes advantage of the ____ and star topologies.

Compare and contrast FDDI to the token ring access method.

Computer programmers use the ____ layer to connect workstations to network services, such as linking an application into electronic mail.

____ circuits are logical communication paths set up to send and receive data.

A(n)____ line is a dedicated telephone line that can be used for data communications to connect two different locations for continuous point-to-point communications.

____ is a process that scrambles the data so that it cannot be read if intercepted by unauthorized users.

LAN and WAN communications have been generally guided by a network communications model called the ___________________________________ reference model.

Describe the topology of wireless WANs using radio communications.

Provide a high-level description of the bottom, middle, and top layers of the OSI model.

Describe the role of the headend in the star topology of a Cable TV WAN.

If no broadcasts are detected from the active monitor or any one of the standby monitors, a ring goes into a ____ condition.

The ____________________ layer of the OSI model controls the passage of packets along routes on the network.

The token ring transport method uses a physical ____ topology along with the logic of a ring topology.

What is the role of the media access control (MAC)sublayer of the Data Link layer?

Information from one layer is transferred to the next by means of commands called ____.

Class A nodes in FDDI networks are servers or workstations.

In a connectionless service, there is no acknowledgment that a frame has been received.

____ communications in FDDI networks are used for time-sensitive transmissions requiring continuous transmission.

A Class ____ protocol within the Transport layer provides an option to recover lost packets in certain situations.

What is a Request for Comment (RFC)?