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5 Cards in this Set

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You have a key network administrator leave a company. Therefore, what does the company depend on to continue to use the network?
Network Documentation.
Section Reference: Defining a LAN.
Explanation: To understand your LAN better, it helps to write down what its structure is.
In other words, to document it. This includes any information that helps describe, define, or explain how the network computers are connected physically and logically.
What is the most common central device used today to connect computers to a network?
A Switch.
Section: Defining a LAN.
Explanation: Cannot be hubs because they are considered legacy devices and have been replaced by switches. The advantage of a switch over a hub is that it can handle several conversations at a time.
What is the most common adapter or connector used to connect a computer to a wired network?
RJ45.
Section: Defining a LAN.
Explanation: RJ-45, which is associated with Ethernet networks, is the most common wired adapter by default and is found on virtually every computer these days.
What does a switch use for increased performance?
Full Duplex.
Section: Defining a LAN.
Explanation: A switch can switch very fast between multiple connections, which allow multiple computers to communicate at the same time. As a result, each client can send and receive at the same time (full duplex), which gives better performance.
What do you use to isolate a group of computers within your organization?
VLAN.
Section: Identifying types of LANs.
Explanation: A virtual LAN (VLAN) is a group of hosts with a common set of requirements that communicate as though they were connected together as normal on one switch, regardless of their physical location. A VLAN is implemented to segment a network, reduce collisions, organize a network, boost performance, and increase security.