Term
| What are the 7 layers of the ISO Model? |
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Definition
7. Application
6. Presentation
5. Session
4. Transport
3. Networking
2. Data Link
1. Physical |
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Term
| Give an example of Layer 1. |
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Definition
| Used for Cabling and Signaling |
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Term
| Give an example of Layer 2. |
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Definition
| Switching, Media Access Control(MAC), Flow Control, Logical Link, etc. |
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Term
| Give an example of Layer 3. |
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Definition
- Routing of packets,
- IP addressing |
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Term
| Give an example of Layer 4. |
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Definition
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Term
| Give an example of Layer 5. |
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Definition
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Term
| Give an example of Layer 6. |
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Definition
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Term
| Give an example of Layer 7. |
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Definition
Support for applications
-FTP or File Transfer Protocol
-HTTP Hypertext Transfer Protocol
-etc.
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Term
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Definition
| Open Systems Interconnections |
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Term
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Definition
| The International Standards Organiation (ISO) |
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Term
| The conversion process is into one of these. |
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Definition
| It will change from binary to either ASCII or UniCode |
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Term
| What is the OSI model used for? |
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Definition
| To know how our devices talk to each other. |
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Term
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Definition
| Rules, Regulations, or Instuctions to follow. |
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Term
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Definition
| It is the physical setup. Like using token ring, star, bus ring, mesh, or tree hierachy for your network setup. |
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Term
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Definition
| A group of media access points (client/server) setup together to work and share information. |
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Term
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Definition
| Subnetting is ued to tell you what parts of a netowrk can be used for differnt things. You find out the class of the neetwork, & how many clients can be connnected to an IP address. |
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Term
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Definition
| A way to support apps or provideaccess to the outside world. Another word for Internet. |
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Term
| Carrier Service Unit(CSU)/ Data Service Unit(DSU) |
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Definition
-the first device on a network
-modem at home
-Converting cabling to the carrier service, converts data
-If all are in one it's a single point of failure |
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Term
| What can be hardwired or even software tohelp prevent malicious activity by monitoring ports? |
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Definition
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Term
| Why have a double firewall? |
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Definition
| The first firewall will brings four lanes down to two. Meaning it will eliminated all unnecessary ports down to what your company will use. |
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Term
| What are ports 20 & 21 used for? |
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Definition
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Term
| What is port 22 used for? |
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Definition
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Term
| What is port 23 used for? |
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Definition
TelNet
(Remote access for routers)
(Sent clear text) |
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Term
| What is port 25 used for? |
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Definition
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Term
| What is port 53 used for? |
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Definition
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Term
| What is port 67 and 68 used for? |
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Definition
DHCP
(Dynamic Host Configuration Protocol)
Determines if IP address is static or dynamic |
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Term
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Definition
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Term
| What is Port 110 used for? |
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Definition
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Term
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Definition
IMAP (Bidirectional)
Always set phones IMAP |
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Term
| What is Port 443 used for? |
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Definition
HTTPS (SSL)
biggest is COMODO free download firewall |
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Term
What is Port 631 used for?
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Definition
CUPS
-open source printing
(Unix, Linux, Apple)
-modular printing system for Unix-like computer operating systems |
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Term
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Definition
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Term
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Definition
| Class Interdomain Routing |
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Term
| 2nd firewall is a security checkpoint uses layer 2 tunneling |
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Definition
| proxy- controlls internet access/permissions for websites |
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Term
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Definition
Defaul Gateway
is first router
-entry/exit point of all data on a network |
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Term
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Definition
1. Access--we're plugged in
2. Destribution
3. Core-for redundancy and fault tolerance |
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