TCP/IP OSI Model Quiz: FTP, HTTP, and SMTP Protocols

Questions and Answers

Facilitating communication and resource sharing

Mapping names to values

Authentication verifies user identity, while authorization controls resource access

Map IP addresses to domain names for easier recall Signup and view all the answers

Directory Services Signup and view all the answers

User names and passwords in cryptic form Signup and view all the answers

By checking user credentials at login and periodically Signup and view all the answers

Controlling user access to network resources Signup and view all the answers

Mapping IP addresses to domain names for easy recall Signup and view all the answers

Directory Services store user-related information, while Accounting tracks financial transactions. Signup and view all the answers

Study Notes

The TCP/IP suite includes key protocols such as TCP (reliable data transfer), IP (routing of data packets), DNS, DHCP, FTP, HTTP, and SMTP, each with its own specific function.
TCP/IP is a set of protocols that operate at different levels, with four layers: Application, Transport, Internet, and Network Interface.

TCP/IP addressing is a system used to identify and communicate with devices on a network, consisting of an IP address and a subnet mask.
The IP address is a unique identifier assigned to each device, while the subnet mask determines which part of the IP address identifies the network and which part identifies the host.
Subnetting is the process of dividing a network into smaller subnets to improve performance and security.

Each datagram contains a field called Time to Live (TTL) that controls the situation.
When a datagram visits a router, the TTL value is decremented by 1, and when it reaches 0, the router discards the datagram.
A time-exceeded message is sent by the router to the original source when a datagram is discarded.

Configuring TCP/IP network settings involves setting up IP addresses, subnet masks, default gateways, and DNS servers on devices.
This can be done manually or through automated tools such as DHCP.
Configuring network settings also involves enabling security features such as firewalls, antivirus software, and intrusion detection systems.

Troubleshooting TCP/IP network connectivity issues involves using tools such as ping, tracert/traceroute, ipconfig/ifconfig, and nslookup.
These tools help diagnose and troubleshoot problems at the network and system levels.

Network services are a fundamental component of modern computer networks, facilitating communication and resource sharing between devices.
Examples of network services include Directory Services, Accounting, Authentication and Authorization, and Domain Name Services (DNS).
DNS is a crucial service that maps IP addresses to domain names, making it easier to access information on the internet.