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42 Cards in this Set
- Front
- Back
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What is a common attribute used to categorize networks?
(15-1) |
Geographic area or span of physical area |
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What are the most common types of networks in terms of geographic area from smallest to largest?
(15-1) |
1. Personal (PAN) 2. Local (LAN) 3. Campus (CAN) 4. Metropolitan (MAN) 5. Extended or Wide Area (WAN) |
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What is a personal area network generally associated with?
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an individual workspace |
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What is a LAN generally associated with?
(15-2) |
small spaces in buildings; multiple work space devices connected to centralized devices |
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What is a CAN?
(15-2) |
A campus area network; created by linking the LANs in two or more buildings that are in close proximity to each other. |
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What is a MAN?
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Linking networks located at two or more sites in a city create a MAN (Metropolitan Area Network) |
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What is a WAN?
(15-3) |
A wide area network is created by linking the networks located at two or more sites, distributed over geographic distances that extend beyond the span of a metropolitan area |
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What is the Open Systems Interconnection (OSI) reference model?
(15-4) |
framework for classifying all of the processes associated with message exchange on a network developed by the International Organization for Standardization. |
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What is the objective of the OSI model?
(15-4) |
to provide a structured approach for the development of all types of networks.
The model specifies the sequence of processes required for network message transfer between applications on different systems. |
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What is the approach OSI uses to illustrate and explain the message exchange process?
(15-4) |
Layering |
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What are the seven layers of the OSI model?
(15-4) |
7; Application Services
6; Presentation Services
5; Session Services
4; Transport Services
3; Network Services
2; Data Link Services
1; Physical Services
All People Seem To Need Data Processing |
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What layer is responsible for various forms for data conversion?
(15-4) |
Layer 6; Presentation |
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What layer is responsible for synchronizing and managing data transfer between network devices?
(15-4) |
Layer 5; Session |
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What layer is responsible for intranetwork DATA transfer?
(15-5) |
Layer 2; Data Link Services |
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What layer is responsible for the transfer of bits over various MEDIA?
(15-5) |
Layer 1; Physical |
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What layer is responsible for applications running on dissimilar systems to use a network to exchange information?
(15-4) |
Layer 7; Application |
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What layer is responsible for interNETWORK data transfer?
(15-5) |
Layer 3; Network |
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What layer is responsible for assigning various levels for quality to the data transfer process?
(15-4) |
Layer 4; Transport |
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What describes the devices commonly used to enable an organizational network?
(15-8) |
Network Hardware |
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What components are typically part of network hardware?
(15-8) |
Stations;
Servers;
Switches;
Routers |
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What is the hardware component that connects a station to the network medium called?
(15-8) |
Network Interface Card (NIC) |
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What is a device that manages one or more resources shared by users and administrators?
(15-9) |
Server |
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What type of software is used to link multiple servers together to provide greater performance and lower response times than a single server?
(15-10) |
Server Clustering Software |
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What is a network access device that provides a centralized point for LAN communications, media connections, and management activities?
(15-10) |
Switch |
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What layer of the OSI model is a switch typically found on?
(15-10) |
Layer 2; Data Link |
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What is a combination of hardware and software and is a specialized device?
(15-11) |
A router |
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What is routing used for?
(15-11) |
It is used to interconnect various types of LANs at layer 3 of the OSI model |
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What is the term for a conventional LAN that has a single broadcast domain, spanning all hubs and switches and devices connected to their ports?
(15-14) |
flat network |
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What does a virtual LAN (VLAN) do?
(15-14) |
uses routers to divide a single broadcast domain into smaller one. |
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What is the most resource intense network application?
(15-19) |
Videoconferencing |
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What technology allows power to be drawn from the same generic cabling used for network data transmission?
(15-19) |
Power Over Ethernet (PoE) |
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What is the standard that defines PoE?
(15-19) |
IEEE 802.3 |
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What is the power limit to PoE Plus?
(15-19) |
25.5 watts at 50 to 57 volts |
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What is the power limit to PoE?
(15-19) |
15.4 watts at 44 to 57 volts (48 volts nominal) |
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What are three power source options for PoE?
(15-19) |
PoE Switches;
midspan devices;
PoE capable Switches |
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What is referred to as "top down" design?
(15-20) |
Functional design |
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What is referred to as a "bottom up" design?
(15-20) |
Physical design |
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What are the three cabling topologies?
(15-31) |
1. Centralized
2. End-of-Row
3. Top of Rack |
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Which of the three cabling topologies uses the most cabling?
(15-31) |
Centralized |
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How many levels of switches are used in the end or row topology?
(15-32) |
Two |
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What are the three WAN designs, if dedicated circuits are used?
(15-37) |
Centralized;
Partial mesh;
Full mesh |
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What is used to link two or more remote sites to a central site called a WAN hub?
(15-38) |
Centralized WAN |
