computer networking top down approach
chapter 3 UPDATED ACTUAL Exam
Questions and CORRECT Answers
logical communcation - CORRECT ANSWER - mean
that from an application's perspective, it is as if the hosts running the processes were
directly connected; in reality, the hosts may be on opposite sides of the planet, con-
nected via numerous routers and a wide range of link types.
UDP(User Datagram Protocol) - CORRECT ANSWER - which provides an unreliable,
connectionless service
to the invoking application
TCP
(Transmission Control Protocol) - CORRECT ANSWER - which provides a reliable,
connection-oriented service to the invoking
application
IP service model is a
best-effort delivery service - CORRECT ANSWER - means that IP makes its
"best effort" to deliver segments between communicating hosts,
but it makes no
guarantees
congestion control
(tcp) - CORRECT ANSWER - prevents any one TCP con-
nection from swamping the links and routers between communicating hosts with an
excessive amount of traffic
, sockets - CORRECT ANSWER - doors through which data passes from the network to the
process and through which data passes from the process to the network.
demultiplexing - CORRECT ANSWER - t. This
job of delivering the data in a transport-layer segment to the correct socket is
multiplexing - CORRECT ANSWER - job of gathering data chunks at the source host
from different
sockets, encapsulating each data chunk with header information (that will later be
used in demultiplexing) to create segments, and passing the segments to the network
layer is
well-known port num-
bers - CORRECT ANSWER - he port numbers ranging from 0 to 1023
source port number field and the destination port number field. 32 bits total - CORRECT
ANSWER - that sockets have unique
identifiers, and (2) that each segment have special fields that indicate the socket to
which the segment is to be delivered. what are they
TCP server application - CORRECT ANSWER - "welcoming socket," that waits for
connectionestablishment
connectionless. - CORRECT ANSWER - UDP is said to be
The TCP segment has - CORRECT ANSWER - 20 bytes of header overhead
in every segment
chapter 3 UPDATED ACTUAL Exam
Questions and CORRECT Answers
logical communcation - CORRECT ANSWER - mean
that from an application's perspective, it is as if the hosts running the processes were
directly connected; in reality, the hosts may be on opposite sides of the planet, con-
nected via numerous routers and a wide range of link types.
UDP(User Datagram Protocol) - CORRECT ANSWER - which provides an unreliable,
connectionless service
to the invoking application
TCP
(Transmission Control Protocol) - CORRECT ANSWER - which provides a reliable,
connection-oriented service to the invoking
application
IP service model is a
best-effort delivery service - CORRECT ANSWER - means that IP makes its
"best effort" to deliver segments between communicating hosts,
but it makes no
guarantees
congestion control
(tcp) - CORRECT ANSWER - prevents any one TCP con-
nection from swamping the links and routers between communicating hosts with an
excessive amount of traffic
, sockets - CORRECT ANSWER - doors through which data passes from the network to the
process and through which data passes from the process to the network.
demultiplexing - CORRECT ANSWER - t. This
job of delivering the data in a transport-layer segment to the correct socket is
multiplexing - CORRECT ANSWER - job of gathering data chunks at the source host
from different
sockets, encapsulating each data chunk with header information (that will later be
used in demultiplexing) to create segments, and passing the segments to the network
layer is
well-known port num-
bers - CORRECT ANSWER - he port numbers ranging from 0 to 1023
source port number field and the destination port number field. 32 bits total - CORRECT
ANSWER - that sockets have unique
identifiers, and (2) that each segment have special fields that indicate the socket to
which the segment is to be delivered. what are they
TCP server application - CORRECT ANSWER - "welcoming socket," that waits for
connectionestablishment
connectionless. - CORRECT ANSWER - UDP is said to be
The TCP segment has - CORRECT ANSWER - 20 bytes of header overhead
in every segment
