Module Exam 11
Which two characteristics are associated with UDP sessions? (Choose two.)
- Destination devices receive traffic with minimal delay. - Received data is unacknowledged.
Which three statements describe a DHCP Discover message? (Choose three.)
- The destination IP address is 255.255.255.255. - The message comes from a client seeking an IP address. - All hosts receive the message, but only a DHCP server replies.
Which two types of applications are best suited for UDP? (Choose two.)
- applications that handle reliability themselves - applications that can tolerate some data loss, but require little or no delay
What are two roles of the transport layer in data communication on a network? (Choose two.)
- identifying the proper application for each communication stream - tracking the individual communication between applications on the source and destination hosts
What are three responsibilities of the transport layer? (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
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
A client creates a packet to send to a server. The client is requesting HTTP service. What number will be used as the destination port number in the sending packet?
80
What kind of port must be requested from IANA in order to be used with a specific application?
A registered port
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 OSI layer provides the interface between the applications used to communicate and the underlying network over which messages are transmitted?
Application
What do the client/server and peer-to-peer network models have in common?
Both models support devices in server and client roles.
Which protocol or service uses UDP for a client-to-server communication and TCP for server-to-server communication?
DNS
Which three protocols operate at the application layer of the TCP/IP model? (Choose three.)
FTP, DHCP, and POP3
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 application layer protocol uses message types such as GET, PUT, and POST?
HTTPS
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.
What is an advantage of smb over ftp?
Only with SMB can data transfer occur in both directions
Which applications or services allow hosts to act as client and server at the same time?
P2P Applications
Which three application layer protocols use TCP? (Choose three.)
SMTP HTTP and FTP
which two protocols may devices use in the application process that sends email?
SMTP POP3
What is a characteristic of UDP?
UDP reassembles the received datagrams in the order they were received.
What does a client do when it has UDP datagrams to send?
What does a client do when it has UDP datagrams to send?
Which two fields are included in the TCP header but not in the UDP header? (Choose two.)
Window Sequence Number
The application layer of the TCP/IP model performs the functions of what three layers of the OSI model? (Choose three.)
application, presentation, and session.
Which field in the TCP header indicates the status of the three-way handshake process?
control bits
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 serverdecentralized resources
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.)
session layer presentation layer application layer
Which factor determines TCP window size?
the amount of data the destination can process at one time
What type of information is contained in a DNS MX record?
the domain name mapped to mail exchange servers
