Need To Know

What is the binary representation of 0xCA?

11001010*

Which two protocols operate at the highest layer of the TCP/IP protocol stack? (Choose two.)

DNS* , POP*

Which three statements characterize UDP? (Choose three.)

UDP provides basic connectionless transport layer functions.*, UDP relies on application layer protocols for error detection. *, UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms.*

How does quality of service help a network support a wide range of applications and services?

by providing mechanisms to manage congested network traffic*

What important information is added to the TCP/IP transport layer header to ensure communication and connectivity with a remote network device?

destination and source port numbers*

Which two functions are primary functions of a router?

packet forwarding* , path selection*

What are two characteristics shared by TCP and UDP? (Choose two.)

port numbering* , use of checksum*

What are two services provided by the OSI network layer? (Choose two.)

routing packets toward the destination * , encapsulating PDUs from the transport layer*

Why are port numbers included in the TCP header of a segment?

to enable a receiving host to forward the data to the appropriate application*

What is the function of the HTTP GET message?

to request an HTML page from a web server*