A. is referred to, as
B. is referred as, in
C, is referred to as, to
D. is referred ，
within
( )11.
The transmitter then sends the character ，
1 bit at a time ，
by
_________each successive bit on the line for a duration of T seconds,
_________all bits have been transmitted.
A. place, still
B. placed ，
since
C. placing, until
D. placing ，
because
( )12.
When the data link connects a CRT terminal _________a
computer ，
_________problems arise, as the terminal is itself character
oriented.
A. into, many
B. on ，
a few
C. in, a few
D. to，
few
( )13.
_________the receiving end of a synchronous serial data link ，
the receiver
continually monitors the line _________a start bit.
A. On ， looking
B. Within，
look for
C. In, look at
D. At ，
looking for
( )14.
As companies realized they could save money and gain productivity by
_________networking technology, they added networks and expanded
_________networks almost as rapidly as new network technologies and products
could be introduced.
A. use, exist
B. using, existing
C. to use, to exist
D. used, existed
( )15.
The OSI reference model allows you _________the network functions that occur
at each layer. More importantly, the OSI reference model is a framework you can
use _________how information travels throughout a network.
A. view, understand
B. viewing, understanding
C. viewed, understood
D. to view, to understand
( )16.
The transport layer segments data from the _________host’s system and
reassembles the data into a data stream on the _________host’s system.
A. sending, receiving
B. to send, to receive
C. sent, received
D. send, receive
( )17.
The data link layer provides the transit of data _________a physical link. In so
doing, the data link layer is concerned _________physical addressing, network
topology, network media access, and error detection.
A. with, across
B. at, in
C. between, in
D. across, with
Ⅱ 短语英译汉： (Translate the following phrases into Chinese)
1.
the schemes for performing these three functions
2.
a series of amplitude values
2