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Flashcards in chapter 5 Deck (17):
1

Hub.




118


a hub is the most basic networking device that connects multiple computers or other network devices together. Unlike a network switch or router, a network hub has no routing tables or intelligence on where to send information and broadcasts all network data across each connection.

2

NIC.



118

Network Interface Card, the NIC is also referred to as an Ethernet card and network adapter. It is an expansion card that enables a computer to connect to a network; such as a home network, or the Internet using an Ethernet cable with an RJ-45 connector.

3

NIC has 2 LED's to help in diagnosing any functional problem, what are they?
119

1- the Link LED
2- the Activity LED

4

Bridge.

120

a bridge is a device that connects two similar network segments (of the same LAN) together.

5

what would be the reasons of placing a bridge in the network?
120

- to connect 2 segments together.
- to divide a busy network in to segments.

6

is a computer networking device that connects devices together on a computer network, by using packet switching to receive, process and forward data to the destination device.
120

a switch

7

A router.



121

A router is a device that forwards data packets along networks. A router is connected to at least two networks, commonly two LANs or WANs or a LAN and its ISP's network. Routers are located at gateways, the places where two or more networks connect.

8

routers can have different names, what are they?
122

layer 3 switch, multilayer switch.

9

_____ is a software utility or hardware device that limits outside network access to a computer or local network by blocking or restricting network ports. They are a great step for helping prevent un-authorized access to a company or home network.

A firewall

10

DMZ



125

DMZ is short for DeMilitarized Zone and acts as a buffer area between outside users (the internet) and a private (local or wide area network) server. DMZs are typically used by corporations and contain a device that accepts internet traffic such as DNS, FTP and Web servers.

11

DHCP.



126

Dynamic Host Configuration Protocol is a protocol used to assign an IP address to a computer or device that has been connected to a network automatically. Routers, switches, or servers that use DHCP to assign addresses to other computers can make setup and management easier for the network administrator.

12

MLS


130

A multilayer switch (MLS) is a computer networking device that switches on OSI layer 2 like an ordinary network switch and provides extra functions on higher OSI layers.

13

Load balancer.
130

A load balancer is a device that acts as a reverse proxy and distributes network or application traffic across a number of servers.

14

Domain Name Services server.



130

A DNS server is a server software program that performs Domain Name Services (DNS). This involves taking a full host name or a domain name and returning it to the corresponding Internet Protocol (IP) address.

15

there are 2 main types of proxy servers. what are they?


135

1- caching proxy server
2- web proxy server

16

A cache server.





135

A caching proxy server is a dedicated network server or service acting as a server that saves Web pages or other Internet content locally. By placing previously requested information in temporary storage, or cache, a cache server speeds up access to data.

17

web proxy server.

135

is used to create a web cache, the web proxy remembers when you visited a site that you had visited before, the site loud faster and some time recalls you information .