2.2 Flashcards
1
Q
What are the characteristics of hub?
A
- OSI layer 1 device (Physical)
- Also called a Multi-port repeater
- Everything is hald-duplex
- 10megabit / 100megabit
2
Q
What are the characteristics of bridge?
A
- A switch with 2 to 4 ports but software decides the forwarding.
- Connects different physical networks and different topologies.
- OSI layer 2 (Data Link)
3
Q
What are the characteristics of switch?
A
- It’s bridging done in hardware using ASIC
- OSI layer 2 (Data Link) device that forwards traffic based on data link address.
- Many ports and features like PoE.
- Multilayer switches also have the routing functionality
4
Q
What are the characteristics of router?
A
- It routes traffic between IP subnets
2. Often connects diverse network types (LAN, WAN, Copper, Fiber)
5
Q
What are the characteristics of firewall?
A
- OSI layer 3 and 4
- Filter traffic by port number (info from layer 4 [TCP/UDP])
- Can encrypt traffic into/out of the network
- It can proxy traffic
6
Q
What does WAP stand for?
A
Wireless access point
7
Q
What are the characteristics of WAP?
A
- It’s not a wireless router
- It’s a bridge to extend the wired network onto the wireless network.
- OSI layer 2
8
Q
What are the characteristics of modem?
A
- it uses standard phone line
- converts analog sound to digital signals
- Cable modem is a bridge and not a modem.
9
Q
What are the characteristics of media convertor?
A
- OSI layer 1 (physical) for signal conversion
- used to extend a copper wire over a long distance (convertit to fiber and back again.)
- Almost always powered
10
Q
What are the characteristics of Wireless range extender?
A
- Extends the reach of a wireless network
2. It’s basically a wireless repeater.
11
Q
What are the characteristics of VoIP endpoint?
A
- Used to communicate
2. it can be any device like a Traditional handset, Desktop Application or an app on phone.
