Network + 2.3

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Transmission Control Protocol (TCP)

TCP is one of the main internet protocols. It allows computing devices and application devices to exchange messages over a network.

When does a router use ARP?

When the router's routing table doesn't contain the MAC addresses of devices on the local LAN that they need to forward frames to.

During network transmission, data is transferred to various routers, which forward the data to the appropriate network. If the source and destination network addresses reside on the same network, which protocol is used to determine the destination IP's MAC address?

ARP

Address Resolution Protocol (ARP)

ARP is used to determine the MAC address of the host using the destination IP address.

TCP Flag - ACK

Acknowledges the receipt of a packet.

What is the purpose of a frame check sequence (FCS) footer?

Checksum error detection

TCP Flag - PSH

Directs the sending system to send buffered data.

Which of the following is the process of breaking a message into packets, adding controls and other information, and then transmitting the message through the transmission medium?

Encapsulation

TCP Flag - URG

Flags a packet as urgent.

Routing data between computers on a network requires several mappings between different addresses. Which of the following statements is true?

Hosts use ARP to resolve known IP addresses into MAC addresses.

TCP Flag - FIN

Indicates that no additional information will be sent.

Maximum transmission unit (MTU)

MTU is the largest size data unit that can be transmitted through the network.

Which term does the OSI model use that's different from the TCP/IP model in reference to the terms frame, packet, and segment?

Protocol data unit (PDU)

TCP Flag - RST

Resets a connection.

TCP is a connection-oriented protocol that uses a three-way handshake to establish a connection to a system port. Computer 1 sends a SYN packet to Computer 2. Which packet does Computer 2 send back?

SYN/ACK

TCP Flag - SYN

Starts a connection between hosts.

TCP/IP Application Layer

The Application layer prepares data to be sent through the network.

TCP/IP Internet Layer

The Internet layer converts segments into packets, adding logical network and device addresses.

TCP/IP Link Layer

The Link layer converts packets into frames, adding physical device addressing information and a frame check sequence footer for error detection. It also converts the frames into bits (0s and 1s) for transmission across the transmission media.

TCP/IP Transport Layer

The Transport layer breaks data into pieces called segments, adding sequencing and control information.


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