Ch. 5 Fundamentals Of TCP/IP Transport And Applications Flashcards
_____ provides a wide variety of services whereas _____ does not
TCP
UDP
_____ provides error recovery, _____ does not
TCP
UDP
_____ needs fewer bytes than _____ and it’s Header
UDP
TCP
______ Does not need error recovery so they use UDP
VoIP
Multiplexing using ports, error recovery, flow control using windowing, connection establishment and termination, ordered data transfer and data segmentation are all features of
TCP/IP transport layer
Each TCP/IP application typically chooses to use either TCP or UDP based on the applications ______
Requirements
TCP relies on ____ end to end delivery of the data including routing issues
IP Internet protocol
Message created by the TCP is known as TCP segment or more generically _____
L4PDU
The function that allows receiving host to choose the correct application for which the data is destined based on the port number
Multiplexing
______ tells the receiving computer to which application to give the received data
Multiplexing
TCP and UDP segments use different ______ ______ ______ to know where to direct data to
Destination port number
Multiplexing relies on the concept called a ______
Socket
A ______ is composed of three things : An IP address, transfer protocol, a port number
Socket
Web servers Use well known port ___
80
_____ ______ _____ start at 1024 because the ports below 1024 are reserve for well-known applications
Dynamic port numbers
______ based on sockets, ensures that the data is delivered to the correct application
Multiplexing
_____ Numbers are a vital part of socket concept
Port
You can manage a switch or router using the _____
World Wide Web (WWW)
The _____ allows users to use names to refer to computers, with it being used to find the corresponding IP address
DNS (domain name system)
SNMP
Simple network management protocol
______ is an application layer protocol used specifically for network device management
SNMP (simple network management protocol)
To query network devices Cisco prime software mainly uses______
SNMP (simple network management protocol)
TFTP
Trivial file transfer protocol
Traditionally to move files to and from the router or switch, Cisco used _____
TFTP (trivial file transfer protocol)
Routers and switches can use _____ is a much more functional protocol to transfer files
FTP (file transfer protocol)
Process of numbering and acknowledging data with sequence and acknowledgement fields
Error recovery (reliability)
Process that uses window sizes to protect buffer space and routing devices from being overloaded with traffic
Flow control using windowing
Process used to initialize port numbers and sequence and acknowledgment fields
Connection establishment and termination
Continuous stream of bytes from an upper layer process that is segmented for transmission and delivered to upper layer processes at the receiving device with the bytes in the same order
Order data transfer and data segmentation
______ establishment refers to the process of initializing sequence and acknowledgment fields and agreeing on the port numbers used
Connection
Synchronize the sequence numbers
SYN
Acknowledge the sequence numbers
Ack
____ is short for finish
FIN
A protocol that requires an exchange of messages before data transfer begins, or that has required preestablished correlation between two endpoints
Connection oriented protocol
A protocol that does not require an exchange of messages and that does not require preestablished correlation between two endpoints
Connectionless protocol
Unlike TCP, ____ is connectionless and provides no reliability, no windowing, no reordering of the received data, and no segmentation of large chunks of data into the right size for transmission
UDP (user datagram protocol)
QoS
Quality of service
_____ in general defines the quality of the data transfer between two applications and in the network as a whole
QoS (quality of service)
Four categories of _____ include bandwidth, delay, jitter, loss
QoS (quality of service)
The volume of bits per second needed for the application to work well; it can be biased with more volume in one direction or balanced
Bandwidth
The amount of time it takes one IP packet to flow from sender to receiver
Delay
The variation in delay
Jitter
The percentage of packets discarded by the network before they reach the destination when using TCP, requires a retransmission
Loss
Sending voice traffic as bits inside an IP packet is generally called
VoIP
URL
Uniform resource locators
The ____ is listed before the //
Protocol
The _____ name is listed between the // and the /
Host
The name of the ____ ______ is listed after the /
Web page
The most frequently used command in http is the _____ _____
GET request
Web pages typically consist of multiple files called ____
Objects
The OSI ______ layer defines several functions, the most important of which are error recovery and flow control. Likewise the TCP/IP transport layer protocols implement the same types of features
Transport
The key difference between TCP and UDP is that _____ provides a wide variety of services to applications, whereas ____ does not
TCP
UDP
______ Does not perform error recovery, but it takes less bandwidth and uses fewer processing cycles
UDP
______ by TCP and UDP involves the process of how a computer thinks when receiving data
Multipiplexing
Multiplexing thing relies on a concept called ______ which consists of three things an IP address, a transport protocol, and a port number
Sockets
______ Numbers are a vital part of the socket concept well-known port numbers Are used by servers other port numbers are used by clients
Port
_____ connection establishment occurs before any other features can begin their work
TCP
_____. Establishes and terminates connections between the end points whereas ____ does not
TDP
UDP
A protocol that requires an exchange of messages before the data transfer begins with that has a required preestablished correlation between two end points
Connection oriented protocol
Protocol that does not require an exchange of messages and that does not require preestablished correlation between two end points
Connectionless protocol
_____ provide the service for applications to exchange messages is connectionless and provides no reliability
UDP
______ Applications focus more on the bandwidth between two software processes they often do not have the human in the picture
Batch
Usually have a human user at one end of a flow and the IP packets must flow in both directions for meaningful work to happen. Delay and jitter have a big impact on the user experience
Interactive data applications
______ such as voice and video require low delay, low, jitter, and low loss
Real-time applications
Web _____ which consist of Web server software running on the computer store information that might be useful to different people
Servers
Web ______ which is software installed on end-users computer provide the means to connect to a Web server and display the webpage is stored on the Web server
Browsers
Which of the following is not a feature of a protocol that is considered a match OSI layer for the transport later
Error recovery
Flow control
Segmenting of application data
Conversion from binary to ASCII
Conversion from binary to ASCII
Which of the following header fields identify which TCP/IP application gets data received by the computer (choose 2) Ethernet type SNAP protocol type IP protocol TCP port number UDP port number
TCP port number
UDP port number
Which of the following are typical functions of TCP (choose 4) Flow control (windowing) Error recovery Multiplexing using port numbers Routing Encryption Ordered data transfer
Flow control
Error recover
Multiplexing using port numbers
Ordered data transfer
Which of the following is performed by both TCP and UDP Windowing Error recovery Multiplexing using port numbers Routing Encryption Ordered data transfer
Multiplexing using port numbers
What do you call data that includes the layer 4 protocol header, and data given to layer 4 by the upper layers not including any headers and trailers from layers 1 to 3 (choose 2) L3PDU Chunk Segment Packet Frame L4PDU
Segment
Frame
In the URL http://www.certskills.com/ICND1 which part identifies the Web server
Www.certskills.com
When comparing VoIP within HTTP mission-critical business application which of the following statements are accurate about the quality of service needed from the network (choose two answers) VoIP needs better (lower) packet loss HTTP needs less bandwidth HTTP needs better (lower) jitter VoIP needs better (lower) delay
VoIP needs better (lower) packet loss
VoIP needs better (lower) delay