2.1.10 TCP/IP Networking Model

Which of the following methods helps to detect lost packets? (Select two.)

Acknowledgements Sequencing

Match the layers of the TCP/IP model to the corresponding layers of the OSI model. (Each option may be used more than once.)

Application - Application Presentation - Application Session - Application Transport - Transport Network - Internet Data Link - Link Physical - Link

Match each TCP and/or UDP ports to the service that uses it.

Dynamic Host Configuration Protocol (DHCP) UDP ports 67 and 68 Network News Transport Protocol (NNTP) TCP Port 119 Simple Network Management Protocol (SNMP) TCP ports 161 and 162 Domain Name System TCP and UDP port 53 Telnet TCP and UDP port 23 Trivil File Transfer Protocol (TFTP) UDP port 69

An internet server has a single network interface that has been assigned an IP address. The server is running both the FTP and HTTP services. A client computer initiates a session with the HTTP server. How is the HTTP request from the client routed to the correct service running on the server?

Port or socket number

What is the purpose of a network model?

Standardize processes at each layer.

How does TCP handle data sequencing?

TCP breaks user data into segments, numbers each segment, places them in the correct sequence, and sends each one in order, waiting for acknowledgement before sending the next segment.

Which of the following lists accurately describes TCP and UDP? (Select two.)

UDP: connectionless, unreliable, unsequenced, low overhead TCP: connection-oriented, reliable, sequenced, high overhead

Which of the following are limitations of the TCP/IP model? (Select two.)

A particular protocol implantation may not represent every layer. TCP/IP layers are theoretical and do not actually perform real functions.

The TCP/IP protocol stack uses port numbers to determine protocol use. Port usage is regulated by the Internet Corporation for Assigning Names and Numbers (ICANN). Which of the following are characteristics of registered ports? (Select two.)

Is assigned by ICANN for a network service. Has port numbers ranging from 1024 to 49151.

Match each layer of the TCP/IP model to its functions. (Each layer matches with two functions.)

Is responsible for how messages are electrically transmitted. Link Is responsible for forwarding packets through multiple networks. Internet Is responsible for describing the physical layout of the network. Link Is responsible for error checking and reliable delivery. Transport Is not concerned with reliable delivery of information. Internet Integrates network functionality into the host operating system. Application Provides the capability for services to operate on the network. Application Uses ports to enable application-to-application communications between hosts. Transport