CCNA Intro to networks modules 14-15
because HTTP requires reliable delivery
Why does HTTP use TCP as the transport layer protocol?
6001
A PC that is communicating with a web server has a TCP window size of 6,000 bytes when sending data and a packet size of 1,500 bytes. Which byte of information will the web server acknowledge after it has received four packets of data from the PC?
69
A client creates a packet to send to a server. The client is requesting TFTP service. What number will be used as the destination port number in the sending packet?
HTTP SMTP FTP
A manufacturing company subscribes to certain hosted services from its ISP. The services that are required include hosted world wide web, file transfer, and e-mail. Which protocols represent these three key applications? (Choose three.)
10 segments
A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the server send before it requires an acknowledgment from the PC?
session presentation application
The application layer of the TCP/IP model performs the functions of what three layers of the OSI model? (Choose three.)
multiplexing multiple communication streams from many users or applications on the same network meeting the reliability requirements of applications, if any identifying the applications and services on the client and server that should handle transmitted data
What are three responsibilities of the transport layer? (Choose three.)
decentralized resources resource sharing without a dedicated server
What are two characteristics of peer-to-peer networks? (Choose two.)
application
Which OSI layer provides the interface between the applications used to communicate and the underlying network over which messages are transmitted?
HTTP
Which application layer protocol uses message types such as GET, PUT, and POST?
P2P applications
Which applications or services allow hosts to act as client and server at the same time?
when applications do not need to guarantee delivery of the data when a faster delivery mechanism is needed
In what two situations would UDP be better than TCP as the preferred transport protocol? (Choose two.)
sequence numbers
What information is used by TCP to reassemble and reorder received segments?
SMB clients can establish a long-term connection to the server.
What is an advantage of SMB over FTP?
A workstation initiates a DNS request when the user types www.cisco.com in the address bar of a web browser.
What is an example of network communication that uses the client-server model?
Both models support devices in server and client roles.
What do the client/server and peer-to-peer network models have in common?
FTP SMTP HTTP
Which three application layer protocols use TCP? (Choose three.)
Source Port Checksum Length
Which three fields are used in a UDP segment header? (Choose three.)
application layer presentation layer session layer
Which three layers of the OSI model provide similar network services to those provided by the application layer of the TCP/IP model? (Choose three.)
FTP POP3 DHCP
Which three protocols operate at the application layer of the TCP/IP model? (Choose three.)
Received data is unacknowledged. Destination devices receive traffic with minimal delay.
Which two characteristics are associated with UDP sessions? (Choose two.)
window sequence number
Which two fields are included in the TCP header but not in the UDP header? (Choose two.)
SMTP DNS
Which two protocols may devices use in the application process that sends email? (Choose two.)
applications that handle reliability themselves applications that can tolerate some data loss, but require little or no delay
Which two types of applications are best suited for UDP? (Choose two.)
the amount of data the destination can process at one time
Which factor determines TCP window size?
peer-to-peer
In what networking model would eDonkey, eMule, BitTorrent, Bitcoin, and LionShare be used?
control bits
Which field in the TCP header indicates the status of the three-way handshake process?
client/server
Which networking model is being used when an author uploads one chapter document to a file server of a book publisher?
HTTPS
Which protocol is used by a client to communicate securely with a web server?
A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.
Which scenario describes a function provided by the transport layer?