Exam 2: Lan/Wan Interconnectivity

The token ring access method was developed by ____.

The OSI is the product of which standards organization?

Ethernet currently enjoys more popularity than token ring because there are many Ethernet network equipment options and because it is well-suited for high-speed WAN connectivity.

List three ways in which the OSI model, over the years, has facilitated the growth in network communications.

The ____________________ is the total amount of communications cable that makes up a network.

FDDI employs two rings, so that if one ring malfunctions, data can reach its destination on the other ring.

What is a cyclic redundancy check, and at which OSI layer is it performed?

It is okay to use Ethernet II and standard 802.3 frames among the same communicating nodes on the same network.

What are the two types of packets that can be sent by FDDI? When is each type used?

____ divides the channels into frequencies, and each channel has its own broadcast frequency and bandwidth.

What is a collision? How are collisions detected?

____ is the most efficient method.

Ethernet uses a control method known as CSMA/CD.

____ encoding simply checks for a change in the signal state, from low to high or high to low.

Typically, if a network has a low startup cost, there will be a low cost to maintain it.

Taken together, the set of layers of the OSI model is called a stack.

The Ethernet protocol permits ____ node(s)to transmit at any time.

After the PDU is received by the next layer, the control information and transfer instructions are stripped out, and the resulting packet is called the ____.

What is a headend?

A(n)broadcast frame is one that is sent to all points on the network.