Interested to Buy Any Domain ? << Click Here >> for more details...
The PDU at the network layer is a ________
Packet
Frame
Segment
Bit
- 5 Answers
- 14622 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / pachicoo
Explanation:
A segment is the unit of end-to-end transmission in the TCP
protocol. In general discussion about transmitting
information from one node to another, the term "packet" is
used loosely to refer to a piece of data. However, the
specific packet of data formed by TCP in the transport
layer is called a "segment."
When an application needs to send information to another
network-attached computer, it forms a message. The message
is passed to TCP (assuming a reliable protocol is needed;
otherwise, it is sent to UDP), where it is encapsulated
into a segment. The segment is sent to IP where it is
encapsulated into a datagram. The datagram is sent to the
data link layer where it is encapsulated into frames.
Message: The actual application data, command, or
instruction specified by the user or application. A message
is encapsulated within a TCP segment assuming TCP is used.
Segment: The packet of information exchanged between two
connected systems (peers) that contains transport layer
protocol information. TCP exchanges segments. Segments
encapsulate upper-layer messages.
Datagram: The packet of information that is exchanged
between two connected systems that contains network layer
protocol information. IP exchanges datagrams. Datagrams
encapsulate segments.
Frame: The packet of information at the data link layer
with a layout that is specific to the protocol in use.
Frames encapsulate datagrams.
More: In general, the term packet applies to any message
formatted as a packet, while the term datagram is generally
reserved for packets of an "unreliable" service.
A "reliable" service is one that notifies the user if
delivery fails, while an "unreliable" one does not notify
the user if delivery fails. For example, IP provides an
unreliable service. Together, TCP and IP provide a reliable
service, whereas UDP and IP provide an unreliable one. All
these protocols use packets, but UDP packets are generally
called datagrams.
Transmission Control Protocol (TCP) accepts data from a
data stream, 'segments' it into chunks, and adds a TCP
header creating a TCP segment. The TCP segment is then
encapsulated into an IP packet. A TCP segment is "the
packet of information that TCP uses to exchange data with
its peers."
Note that the term TCP packet is now used interchangeably
with the term TCP segment. Although in the original RFC
segment usually referred to the TCP unit of data, datagram
to the IP unit and packet to the data communications
network unit:
Processes transmit data by calling on the TCP and passing
buffers of data as arguments. The TCP packages the data
from these buffers into segments and calls on the internet
module [e.g. IP] to transmit each segment to the
destination TCP.
http://tools.ietf.org/html/rfc791#section-2.1
| Is This Answer Correct ? | 7 Yes | 2 No |
If there is only 2 host in bus topology is that possible collision accord?
Hi Guys.. I hv a confusion in my mind. Plz help me to clear my concept. How a port respond when a PortFast port receives any BPDU. Please make sure that BPDU Guard, ROOT Guard are not considered in this scenario. Just a spanning tree without any enhancement. Will the port goes through STP port state??? As we knw that PortFast bypass the Listening & Learning State? How it will respond when a BPDU (Inferior or Superior) is received on that Port. Thanks in advance. Waiting for Replay.
When you cords an IP address on a place router which command stale the IP processing on the interface? A. ip enable B. network ip-address C. ip address ip-address subnet mask D. the exit command from the enabled configuration E. copy running-configuration to startup-configuration
LAN stands for which of the following? A.) Local Area Network B.) Local Arena Network C.) Local Area News D.) Logical Area Network
Which reserve port number talent use?
What does the meaning of interface 0/0?
What is the network brouter?
What is the difference between simple authentication and md5?
Which is true regarding store-and-forward switching method? A.) Latency varies depending on frame-length B.) Latency is constant C.) It is default for all Cisco switches D.) It only reads the destination hardware address before forwarding the frame
Identify IPX GNS and it's purpose? A.) Go Network Server - sends a print job to a network server B.) Get Nearest Server - locate the nearest server C.) Guaranteed Network Services - allocates resources to users D.) Get Notes Server - locates Domino Server
In port based access-list which command u give instead of ip?
Identify the 2 commands the saves the running-config to NVRAM? A.) write memory B.) copy running-config startup-config C.) write network D.) write backup
CCNA 
