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27 Cards in this Set
- Front
- Back
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OSI Layer 1 |
Physical: Signaling, Cabling, Connectors (Cable, NIC, HUB) |
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OSI Layer 2 |
Data Link: The switching layer (Frame, MAC addresses, EUI-48, EUI-64, Switch) |
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OSI Layer 3 |
Network: The Routing Layer (IP addresses, router, packet) |
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OSI Layer 4 |
Transport: The "Post Office" layer (TCP segment, EDUP datagram) |
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OSI Layer 5 |
Session: Communication between devices (Control Protocols, tunneling protocols) |
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OSI Layer 6 |
Presentation: Encoding and Encryption (SSL/TLS) |
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OSI Layer 7 |
Application: The layer we see - Google mail, Twitter, Facebook. |
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What is a MAC Address? |
MAC (Media Access Control), 48 bits, Physical Address of a NIC |
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What is ff-ff-ff-ff-ff-ff |
A Broadcast MAC address *Broadcast: When a computer broadcasts data to everyone on the Network* |
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How large can a single frame be? |
1500 bytes |
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Where is the Frame generated? |
The NIC (Network Interface Card) |
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How does a Frame find its way to the destination computer? |
MAC Address |
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What is Unicast? |
Unicast: A data transmission that is addressed to a single device. (Via MAC Address) |
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What is Boardcast? |
Broadcast: A data transmission that is sent to everyone on the network with a MAC Address of FF-FF-FF-FF-FF-FF |
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What is a Broadcast Domain? |
A group of computers that can hear eachother. |
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What's a Hub? |
A repeater. It will receive a frame (Packet) of data and duplicate it many times to send it to everyone on the network. |
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What is a Switch? |
Unlike a hub, a Switch will keep track of MAC addresses and port #'s to everyone connected to the switch and only sends frames (Packets) to the correct MAC address. |
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Default Gateway |
forward packets on to other networks. (A router) |
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What is the Well-Known Port range? |
0-1024 |
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What is Port 80? |
Web Server |
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What is TCP? |
Transmission Control Protocol: A connection oriented conversation between 2 computers to make sure your data gets to you complete and in order. |
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What is UDP? |
User Datagram Protocol: Is NOT connection oriented. One computer sends the data and hopes you're ready for it. |
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TCP/IP stands for what? |
Transmission Control Protocol / Internet Protocol |
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TCP/IP Layer 1 |
Link (Network Interface Layer): All physical cabling, MAC Addresses, Network cards. (Most Hardware except routers) ARP (Address Resolution Protocol) happens here: a protocol used by the Internet Protocol (IP) [RFC826], specifically IPv4, to map IP network addresses to the hardware addresses used by a data link protocol. |
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TCP/IP Layer 2 |
Internet: IPv4, IPv6, ICMP, IGMP, Anything to do with IP Addresses (Routers) |
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TCP/IP Layer 3 |
Transport: TCP, UDP | All assembly and disassembly of packets. Has to utilize TCP or UDP to get the data to the next location. |
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TCP/IP Layer 4 |
Application: Everything that has to do w/ applications works at this layer. (FTP, BOOTP, TFTP, DNS, HTTP(S), TLS/SSL, VoIP, SSH, POP3, IMAP4, NTP Telnet, STMP, SNMP) |
