sponsored links
- A distributed network configuration in which all data / information pass through a central computer is ?
- bus network
- star network
- ring network
- point - to - point network
- none of these
- In a synchronous modem, the receive equalizer is known as ?
- Communication circuits that transmit data in both directions but not at the same time are operating in
- a simplex mode
- a half duplex mode
- a full duplex mode
- an asynchronous mode
- none of these
- While transmitting odd-parity coded symbols, the number of zeros in each symbol is ?
- odd
- even
- 1 and 2 both
- unknown
- none of these
- What is the minimum number of wires needed to send data over a serial communication link layer ?
- 1
- 2
- 4
- 6
- none of these
- A communication device that combines transmissions from several I/O devices into one line is a ______________
- concentrator
- modifier
- multiplexer
- full-duplex line
- none of these
- How much power (roughly) a light emitting diode can couple into an optical fiber ?
- 100 microwatts
- 440 microwatts
- 100 picowatts
- 10 miliwatts
- none of these
- The synchronous modems are more costly than the asynchronous modems because
- they produce large volume of data
- they contain clock recovery circuits
- they transmit the data with stop and start bits
- they operate with a larger bandwidth
- none of these
- Which of the following statements is correct ?
- terminal section of a synchronous modem contains the scrambler
- receiver section of a synchronous modem contains the scrambler
- transmission section of a synchronous modem contains the scrambler
- control section of a synchronous modem contains the scrambler
- none of these
- In a synchronous modem, the digital-to-analog converter transmits signals to the
- equalizer
- modulator
- demodulator
- terminal
- none of these
- Which of the following communication lines is best suited to interactive processing applications ?
- narrow band channel
- simplex lines
- full duplex lines
- mixed band channels
- none of these
- In OSI network architecture, the dialogue control and token management are responsibility of
- session layer
- network layer
- transport layer
- data link layer
- none of these
- In OSI network architecture, the routing is performed by
- network layer
- data link layer
- transport layer
- session layer
- none of these
- How many OSI layers are covered in the X.25 standard ?
- Two
- Three
- Seven
- Six
- none of these
- Which of the following might be used by a company to satisfy its growing communications needs ?
- front end processor
- multiplexer
- controller
- concentrator
- none of these
- What is the number of separate protocol layers at the serial interface gateway specified by the X.25 standard ?
- 4
- 2
- 3
- 6
- none of these
- You have a class A network address 10.0.0.0 with 40 subnets, but are required to add 60 new subnets very soon. You would like to still allow for the largest possible number of host IDs per subnet. Which subnet mask should you assign ?
- 255.240.0.0
- 255.248.0.0
- 255.252.0.0
- 255.254.0.0
- 255.255.255.255
- What is the default subnet mask for a class C network ?
- 127.0.0.1
- 255.0.0.0
- 255.255.0.0
- 255.255.255.0
- none of these
- Which of the following technique is used for fragment ?
- a technique used in best - effort delivery systems to avoid endlessly looping packets
- a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame
- one of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size
- all of these
- none of these
- What part of 192.168.10.51 is the Network ID, assuming a default subnet mask ?
- 192
- 192.168.10
- 0.0.0.5
- 51
- none of these
sponsored links
thank u.........
ReplyDeletePlease provide some marketing set...
ReplyDeletethanx........
ReplyDeleteFriends is there any one writing sbi associates clerk exam on February 21..please tell upto which date I need study current affairs. No updates from the one who wrote the exam on last three weeks.. Please give any update
ReplyDeleteno exam last three weeks.read current affairs upto 10 february
ReplyDelete15 tak krlo.......
ReplyDeleteWhy there is no exam last three weeks
ReplyDeleteGreat collection of question!!!Get more questions and details from here:
ReplyDeletehttp://www.iprofindia.com/bank-po/study-material/
OSI LAYER EXPLAIN PLS......
ReplyDeleteCheck dis link
ReplyDeletehttp://www.gr8ambitionz.com/2012/02/osi-model.html
waooooooo...thanks a lot :)
ReplyDeleteIT Notes Part-1
ReplyDeleteDDL-CREATE,TRUNCATE,ALTER,DROP,RENAME
DML-INSERT ,UPDATE,DELETE,MERGE,SELECT
DCL-GRANT,REVOKE
TCL—COMMIT,SAVEPOINT,ROLLBACK
Normal Forms
1NF-atomic values
2NF-No Partial Dependency
3NF-No transitive Dependency
4NF-No multi value Dependency
5NF-No cycle(join)Dependency
Terms and Symbols
Entity---Rectangle
Attribute---Eclipse
Relationship—Diamond
Weak Entity—Double Rectangle
DATABASE MODEL
Heirarchical model—Tree like structure-top to bottom relationship
Network Model –Graphs
Relational Model-Two dimensional Relations
Different names for same term
Record/Row/Tuple
Attribute/Field/Column
Appoaches
Generalization—bottom up approach
Specialization—top down approach
Normalization—Bottom up approach
ER Modeling –Top down Approach
my SO is tmrw.... pray 4 me frndz....
ReplyDeleteHi Respected all Sir and Madam can we get HRM capsule for IBPS SO 2015
ReplyDelete