Data Communications Ch 13

Typically, a network reaches saturation when its network utilization is at ____ percent

100

A managed element has management software, called a(n) ____________________, running in it

Agent

involves generating system statistics under a controlled environment and then comparing those statistics against known measurements

Benchmarking

true

Computer network technology changes at breakneck speed.

A(n) ____________________ involves modeling an existing system or a proposed system using a computer-based simulation tool and subjecting the model to varying degrees of user demand (called load)

Computer simulation

In a payback analysis, the ____ values are the running sums of the Time-Adjusted Benefits over all the years.

Cumulative Time-Adjusted Benefits

In a wide area connectivity map, external sites, such as suppliers or external agents, are denoted by circles containing the letter ____

E

is the amount of time necessary for the metropolitan area network to reconfigure itself or reroute a packet, should a given link fail.

Failover Time

A reliability of exactly 1.0 means the network or device is reliable 1 percent of the time.

False

Although every device is different, the shorter the mean time between failures, the bette

False

False

FalseAssembling information on network applications requires that you create a fairly extensive list of statistics

False

FalseLatency, delivery rate, and failover are usually significant factors that are included at the local area level

The database that holds the information about all managed devices is called the

Management Information Base

is the average time necessary to repair a failure within the computer network

Mean time to repair

analysis is a common financial analysis technique that involves determining a proposed system's costs and benefits

Payback

When a company calculates the ____ for a proposed project, it compares the revenue generated from the project with the expenses incurred

ROI (return on investment)

The ____ software controls the operations of a managed element and maintains a database of information about all managed element

SNMP manager

A professional called a(n) ____________________ typically is responsible for managing a project and following the SDLC phases

Systems analyst

The ____________________ feasibility of a system is the extent to which the system can be created and implemented using currently existing technology

Technical

means that if something is going to cost one dollar one year from now, you need to put away less than a dollar today to pay for it.

The time value of money

Analyzing and designing a new computer system can be time-consuming and expensive

True

Computer networks are mission-critical systems, and designing a new computer network or increasing the capacity of a current system requires careful planning

True

In a payback analysis, the Development Cost and Operation and Maintenance Costs total the costs of the project over its intended lifetime

True

Setting up a benchmark test can be quite time-consuming

True

True

TrueA metropolitan area connectivity map shares some of the characteristics of wide area maps and some of the characteristics of local area maps.

True

TrueNot all analysis and design projects require all three network connectivity maps

Four statistics, or measures, that are useful in evaluating networks are mean time between failures, mean time to repair, ____, and reliability

availability

A number of techniques exist for performing ____ planning, including linear projection, computer simulation, benchmarking, and analytical modeling

capacity

One technique used to model a corporation's network environment is to create ____.

connectivity maps

A new parameter that might have an impact on metropolitan area design is the ____

failover time

A system's ____ feasibility is the extent to which the system can be created, given the company's current finances

financial

involves predicting one or more network capacities based on the current network parameters and multiplying those capacities by some constant

linear projection

The intent of SDLC is for ____ not to be disjointed steps in a big plan, but overlapping layers of activity

phases

Payback analysis helps you determine the approximate time for a project's payback, or ____, to occur

return on investment (ROI)

A protocol analyzer is also known as ____.

sniffer

In general, a ____ approach is a series of steps and tasks that professionals, such as systems developers, can follow to build high-quality systems faster, with fewer risks, and at lower costs

structured

One of the most popular and successful plans currently used by businesses today is the ____.

systems development life cycle (SDLC)

With respect to ____ benefits, the most common measurement is the monthly or annual savings that will result from the use of the proposed system

tangible

When a company is evaluating a project's ____ feasibility, the company must ask: Can the proposed system be designed, built, tested, and installed in an amount of time that all parties find reasonable and to which they can agree

time