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Description
Flashcards by Alexis Togami, updated more than 1 year ago
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Created by Alexis Togami
over 7 years ago
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| Question | Answer |
| What is the application layer? | The application layer selects the correct protocol to use depending on which application you are using and what you are trying to do. |
| What is the transport layer? | The transport layer creates the connection between two computers or 'hosts',the computers agree the size of the packets they will send and receive. |
| What is the data link layer? | The data link layer is the physical hardware that connects two hosts. |
| What is the network layer? | The network layer is where the routers operate and destination addresses are written onto the packets ready for transmission. |
| What is TCP/IP? | TCP/IP is the protocol that breaks up messages sent over the internet into small chunks called packets,reassembles the packets at the other end,detects errors,resends lost messages and routes the individual packets. |
| What is in the TCP/IP stack? | There are four layers in the TCP/IP stack the application layer,the transport layer the network layer and the data link layer. |
| How does email work? | Mail servers pass on or store emails until they are collected and the user logs on to the server to collect mail. |
| What is POP and IMAP? | POP and IMAP are mail retrieval protocols that fetch message data and attachments from your remote mail server? |
| What is SMTP? | SMTP or simple mail transfer protocol is an email protocol used for transferring email between remote email servers. |
| What is a protocol? | A protocol is a set of rules on how computers communicate with one another. |
| What is HTTP? | HTTP(hypertext transfer protocol) is the protocol used for accessing and receiving web pages in the form of HTML files on the internet. |
| What is HTTPS? | HTTPS is a secure protocol that encrypts the information so that it cannot be understood if it is hacked. |
| What are audit trails? | Audit trails are logs that record every time a user accesses the system,the time and date along wit their actions. |
| Why does a company want to back up data?88 |
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