14-15
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?
10 Segments
Why does HTTP use TCP as the transport layer protocol?
Because HTTP requires reliable delivery.
What do the client/server and peer-to-peer network models have in common?
Both models support devices in server and client roles.
What does a client do when it has UDP datagrams to send?
It just sends the datagrams.
Which field in the TCP header indicates the status of the three-way handshake process?
control bits
A client creates a packet to send to a server. The client is requesting SSH service. What number will be used as the destination port number in the sending packet?
22
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?
6001
Which scenario describes a function provided by the transport layer?
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 flag in the TCP header is used in response to a received FIN in order to terminate connectivity between two network devices?
Ack
Which three fields are used in a UDP segment header? (Choose three.)
Checksum Length Source Port
What is true about the Server Message Block protocol?
Clients establish a long term connection to servers.
Which protocol or service uses UDP for a client-to-server communication and TCP for server-to-server communication?
DNS
Which two protocols may devices use in the application process that sends email? (Choose two.)
DNS SMTP
Which two characteristics are associated with UDP sessions? (Choose two.)
Destination devices receive traffic with minimal delay. Received data is unacknowledged.
What is an advantage of SMB over FTP?
SMB clients can establish a long-term connection to the server.
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.)
HTTP SMTP FTP
Which protocol is used by a client to communicate securely with a web server?
HTTPS
How are port numbers used in the TCP/IP encapsulation process?
If multiple conversations occur that are using the same service, the source port number is used to track the separate conversations.
Which applications or services allow hosts to act as client and server at the same time?
P2P applications
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.)
Presentation Layer Session Layer Application Layer
A client application needs to terminate a TCP communication session with a server. Place the termination process steps in the order that they will occur. (Not all options are used.)
Step 1 > client sends FIN Step 2 > server sends ACK Step 3 > server sends FIN Step 4 > client sends ACK
Which three statements describe a DHCP Discover message? (Choose three.)
The message comes from a client seeking an IP address. The destination IP address is 255.255.255.255. All hosts receive the message, but only a DHCP server replies.
What are two roles of the transport layer in data communication on a network? (Choose two.)
Tracking the individual communication between applications on the source and destination hosts. Identifying the proper application for each communication stream.
Which three statements characterize UDP? (Choose three.)
UDP relies on IP for error detection and recovery. UDP provides basic connectionless transport layer functions. UDP relies on application layer protocols for error detection.
Which networking model is being used when an author uploads one chapter document to a file server of a book publisher?
client/server
Which OSI layer provides the interface between the applications used to communicate and the underlying network over which messages are transmitted?
application
Which two types of applications are best suited for UDP? (Choose two.)
applications that can tolerate some data loss, but require little or no delay applications that handle reliability themselves
What are three responsibilities of the transport layer? (Choose three.)
multiplexing multiple communication streams from many users or applications on the same network identifying the applications and services on the client and server that should handle transmitted data meeting the reliability requirements of applications, if any
In what networking model would eDonkey, eMule, BitTorrent, Bitcoin, and LionShare be used?
peer-to-peer
What is a key characteristic of the peer-to-peer networking model?
resource sharing without a dedicated server
What are two characteristics of peer-to-peer networks? (Choose two.)
resource sharing without a dedicated server decentralized resources
The application layer of the TCP/IP model performs the functions of what three layers of the OSI model? (Choose three.)
session presentation application
