Network Devices Questions Flashcards
1
Q
What is NIC and what is its purpose?
A
- Network interface card
- A NIC is a computer expansion card for connecting to a network
2
Q
What is a Repeater used for?
A
-A repeater is an object that increases a signal’s strength, so it can travel greater distances without a loss in quality.
3
Q
What is a Hub? What is its purpose?
A
- Connects multiple computers or other network devices together.
- More devices communicating makes it less efficient.
4
Q
What is the purpose of a Bridge?
A
- A device that connects two LANs
- Bridging connects two smaller networks to create one big network.
- Uses software to bridge networks
5
Q
What is the purpose of a Switch?
A
- A hardware device that filters and forwards network packets, but is often not capable of much more.
- A network switch is more advanced than a hub, but not as advanced as a router.
- Bridging done in hardware
6
Q
What is an Unmanaged Switch?
A
- Like a plug-and-play switch
- Fixed Config
- No management protocols like SNMP
- Cheap
7
Q
What is a Managed Switch?
A
- A network switch with configuration features that can be modified via a user interface
- VLAN support
- Traffic prioritization
- Redundancy support
- Port Mirroring
8
Q
What is a Router?
A
- A hardware device designed to receive, analyze and move incoming packets to another network.
- It may also be used to convert the packets to another network interface, drop them, and perform other actions relating to a network.
9
Q
What is a Wireless Access Point (WAP)?
A
- A wireless receiver for connecting wirelessly to a network or the Internet.
- Not a router
- Extends wired network to wireless network
10
Q
What is a Wireless LAN controller?
A
- Centralized management of WAPs
- Management functions
11
Q
What is a firewall?
A
- A software utility or hardware device that acts as a filter for data entering or leaving a network or computer.
- You could think of a firewall as a security guard that decides who enters or exits a building.
- A firewall works by blocking or restricting network ports.
12
Q
What is a Cable Modem?
A
- A hardware device that allows your computer to communicate with an Internet service provider over a landline connection.
- Works by connecting a coaxial cable and then an ethernet cord from the modem to a computer or network router.
- Network routers share your Internet connection between multiple computers.
- Cable offers a significant speed increase in Internet performance compared to a dial-up connection and is one of the fastest broadband solutions.
13
Q
What is a DSL Modem?
A
- Hardware device that allows your computer to communicate with an Internet service provider over a DSL connection.
- Not as fast as most Cable broadband connections
14
Q
What is a Patch Panel?
A
-A panel that allows multiple devices to connect and be managed in a more efficient manner.
15
Q
What is Power over Ethernet (PoE)?
A
- A technology that allows an Ethernet network cable to also carry electrical power.
- To take advantage of POE, the network needs either a POE network switch or a POE injector. This switch and injector are what allow a power signal to transmit over Ethernet.
