Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
29 Cards in this Set
- Front
- Back
What do you call a server operation system?
|
Server Network Operating System
|
|
What do you call many servers that are part of a network?
|
Server Farm
|
|
What are the 6 basic LAN components?
|
1. Clients
2. Servers 3. Network Interface Cards 4. Network Cables 5. Hubs and Switches 6. Network Operating System |
|
What would you use to connect a UTP and a Coaxial Cable?
|
BALUN
|
|
What is the most common choice of network cable?
|
Untwisted Wire Pairs (UTP)
|
|
What are 3 basic functions of a Hub?
|
1. Act as a junction box, linking several computers on a network
2. Connection of more than one type of cable 3. Repeat incoming signals to extend the distance |
|
What are the 2 types of Network Operating Systems (NOS)?
|
1. Server NOS
2. Client NOS |
|
What specifies what resources are available to the network for use by other computers?
|
Network Profile
|
|
What describes what each user on a LAN has access to?
|
User Profile
|
|
What keeps track of which user has accessed what network resource?
|
Auditing Software
|
|
What do you call an Ethernet LAN that uses hubs?
|
Shared Ethernet
|
|
How does a bus topology work?
|
All computers on the network receive messages from all other computers, whether the message was intended for it or not. Each computer can individually accept or reject the message.
|
|
What is ethernet's medium access control protocol?
|
CSMA/CD - (Carrier Sense Multiple Access w/ Collision Detect)
|
|
What does the Carrier Sense of the CSMA/CD mean?
|
Computers listen to the network to see if another computer is transmitting before sending.
|
|
What is the difference between a switch and a hub?
|
A hub sends a message to all computers on the network while a switch reads the destination address and sends the messages specifically to that computer.
|
|
What do you call a switch that makes switching decisions based on data link layer addresses?
|
Layer-2 Switches
|
|
What do switches use to decide where to send a message?
|
Forwarding Tables
|
|
How does a switch behave when it is first turned on?
|
It behaves like a hub. It sends messages to all computers until it learns the addresses of each computer and saves the addresses in its forwarding table.
|
|
Which media access control does switched ethernet use?
|
CSMA/CD
|
|
Instead of Hubs, Wireless LANS use...
|
Access Points
|
|
What media access control does WLANs use?
|
CSMA/CA - where CA stands for Collision avoidance.
|
|
How does the virtual carrier sense method work?
|
A request to send (RTS) signal is sent to the access point. If it's free, then it sends back a clear to send (CTS) signal.
|
|
What type of infrared bounces the infrared signal off of walls, so that a direct line of sight isn't needed?
|
Diffuse Infrared
|
|
What are the 3 types of wireless ethernet?
|
1. Direct Sequence Spread Spectrum (DSSS)
2. Frequency Hopping Spread Spectrum (FHSS) 3. IEEE 802.11a |
|
What is the measure of LAN performance?
|
Throughput
|
|
What 2 types of server performance improvements are possible?
|
1. Software improvements
2. Hardware Improvements |
|
What is the slowest task a server needs to do?
|
Read from the disk
|
|
What is a RAID?
|
Redundant Array of Inexpensive Disks
|
|
What are ways to improve LAN performance?
|
1. Identify Network Bottlenecks
2. Improve Server Performance - (hardware and software) 3. Improve Circuit Capacity 4. Reduce Network Demand |