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S305 post midterm

Terms in this set (39)

Once the needs have been defined in the logical network design, the next step is to develop a(n) __________.
Technology design
The goal of the needs analysis step is to produce a ___________, or a statement of the network elements necessary to meet the needs of the organization.
logical network design
Which of the following is not a step used in the building block approach of network design processes?
implementation
Today, most network designers use a three to five year planning horizon.
True
The goals in the needs analysis step of network design are exactly the same when designing LANs vs. when designing WANs.
False
In the technology design stage of network design, _______.
the decisions for fundamental technology/protocols and circuit capacity are interrelated
Which of the following is NOT directly contributing to the increase in network traffic?
Much of the video processing on computers can be off-loaded from the CPU onto high-end video cards
A _________ results when a network is used to a greater extent than was originally anticipated by the network designer.
turnpike effect
Today, all network traffic is due to traffic from internal application systems.
False
Which of the following is FALSE about staff costs for a network?
When a variety of devices from different vendors are used in a network, it takes less time to perform network management activities
A switch always broadcasts all the packets it receives to all the computers that are connected to the switch.
False
Which of the following is NOT an advantage of using Cat5 unshielded twisted pair for cabling LANs?
security (relative to fiber)
A forwarding table tells a switch which port/interface it should send a packet out in order to get to the destination device.
True
Wireless LANs are never connected to a wired network.
False
Which of the following statements regarding 1000Base-T is correct?
All are
A backbone network is a high-speed network that connects many networks
True
The major drawbacks of using VLANs are:
cost and management complexity
Layer-3 switches process messages based on their Data Link layer addresses.
True
Routers use network layer address/MAC address to decide which network segments a packet should be forwarded to.
False
Device performance on a backbone network will NOT be improved by:
translating packets from one protocol to another as they enter the BN
Which of the following is a primary advantage of a VPN in comparison to a private WAN connection?
low cost
Which of the following architectures for dedicated circuits network allows every location to connected to every other location often by point-to-point dedicated circuits.
full mesh
Full mesh networks are less expensive than ring or star networks .
false
In building Wide Area Networks (WAN), many organizations do not build their own long distance communication circuits
true
Virtual private networks (VPN) permit users to create permanent virtual circuits, or tunnels, through the Internet.
true
A star topology:
is dependent upon the capacity of the central node for its performance
In a ring design WAN
failure in one circuit means that the network can most likely continue to function
A disadvantage of a ring architecture in WAN design is that the failure of one circuit will disrupt the entire network.
false
For each WAN type, describe how these services are typically billed.

Dedicated circuit

Shared circuit
- base fee regardless
-additional fee
At the DSL customer premises is a device called a(n) _________.
DSL modem
The _________ is the connection from a home or business to the telephone company end office.
local loop
Which of the following statements is true about DSL circuit?
On a circuit, the shorter the distance, the higher the speed.
WiMAX is an older wireless technology that probably won't be used much longer.
false
The Internet is one large network.
false
The most common cable modem standard is Data over Cable Service Interface Specification (DOCSIS).
true
___________ refers to the fact that ISPs do not charge one another (at the same level) for transferring messages they exchange across an NAP or MAE.
peering
The RFCs that form the basis for Internet standards are developed by the IETF and its working groups.
true
"Fiber-to-the-home" uses
wavelength division multiplexing
Tier 1 ISPs connect together and exchange data at ___________.
IXPs
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