DATA COMMUNICATION AND COMPUTER NETWORK
QUESTIONS AND ANSWERS 11 to 20
 
  
11. 
 
  
Which
  of the following indicate an error if an odd parity approach is used? 
(a)  10101011           (b)  01001010          (c)  10101010           (d)  10010010                              (e)  10011101 
 
  
  
 
  
There
  are five (5) types of cabling which are commonly used in a Ethernet .For the
  10Base5 and 10Base2 cable standards, 
  the maximum segment size and the maximum number of nodes per segment
  respectively are 
(a)   10Base5:200m, 30  10Base2: 500m, 100 
(b)   10Base5:100m, 50  10Base2: 200m, 100 
(c)   10Base5:500m, 30  10Base2: 100m,   30 
(d)   10Base5:500m,
  100            10Base2: 200m,   30 
(e)   10Base5:500m,
  100            10Base2: 200m,   20 
 
  
  
 
  
The
  acronym ADSL stands for 
(a)   Analog and
  Digital Synchronous Link. 
(b)   Asynchronous
  Data Specific language 
(c)   Asymmetric
  Digital Subscriber Line 
(d)   Aperture
  Distance of Satellite Link  
(e)   Analog Data
  Speed Limit. 
 
  
  
 
  
Forty
  stations are on an Ethernet LAN. A 10-port bridge segments the LAN. What is
  the effective average data rate of each station? 
(a)  1.0 Mbps           (b)  2.0 Mbps          (c)  2.5 Mbps           (d)  5.0 Mbps                              (e)  6.0 Mbps.  
 
  
  
 
  
What
  bit in the X.25 standard allows the user to define the source of control
  information? 
(a)  Q                      (b)  D                      (c)  M                      (d)  P                                                 (e)  R. 
 
  
  
 
  
What
  is the field on a cell header in the ATM layer determines whether a cell can
  be dropped. 
(a)  VPI                   (b)  VCI                   (c)  CLP                  (d)  GFC                              (e)  PT. 
 
  
  
 
  
Which
  of the following uses the greatest number of layers in the OSI model? 
(a)  Bridge               (b)  Repeater            
(c)  Router               (d)  Gateway            (e)  None of the above. 
 
  
  
 
  
Which
  of the following layer is also called as Application Adaptation Layer? 
(a)   Simple and
  effort adaptation layer 
(b)   Simple and
  efficient adaptation layer 
(c)   Simple and
  efficient abnormal layer 
(d)   Simple and
  effort less adaptation layer 
(e)   Sample and
  efficient adaptation layer. 
 
  
  
 
  
A
  packet traveling from one Token Ring network to another Token Ring network
  uses which of the following services of a device (each network is an
  independent network)  
(a)  Simple bridge                                  (b)  Repeater 
(c)  Router                                             (d)  Transparent bridge                               (e) 
  Gateway  
 
  
  
 
  
What
  type of addressing is specifically used by the transport layer? 
(a)   Station
  addresses 
(b)   Network
  addresses  
(c)   Application
  program port addresses  
(d)   Dialog addresses
   
(e)   Interface
  addresses  
 
  
11. 
 | 
  
Which
  of the following indicate an error if an odd parity approach is used? 
(a)  10101011           (b)  01001010          (c)  10101010           (d)  10010010                              (e)  10011101 
 | 
 
There
  are five (5) types of cabling which are commonly used in a Ethernet .For the
  10Base5 and 10Base2 cable standards, 
  the maximum segment size and the maximum number of nodes per segment
  respectively are 
(a)   10Base5:200m, 30  10Base2: 500m, 100 
(b)   10Base5:100m, 50  10Base2: 200m, 100 
(c)   10Base5:500m, 30  10Base2: 100m,   30 
(d)   10Base5:500m,
  100            10Base2: 200m,   30 
(e)   10Base5:500m,
  100            10Base2: 200m,   20 
 | 
 |
The
  acronym ADSL stands for 
(a)   Analog and
  Digital Synchronous Link. 
(b)   Asynchronous
  Data Specific language 
(c)   Asymmetric
  Digital Subscriber Line 
(d)   Aperture
  Distance of Satellite Link  
(e)   Analog Data
  Speed Limit. 
 | 
 |
Forty
  stations are on an Ethernet LAN. A 10-port bridge segments the LAN. What is
  the effective average data rate of each station? 
(a)  1.0 Mbps           (b)  2.0 Mbps          (c)  2.5 Mbps           (d)  5.0 Mbps                              (e)  6.0 Mbps.  
 | 
 |
What
  bit in the X.25 standard allows the user to define the source of control
  information? 
(a)  Q                      (b)  D                      (c)  M                      (d)  P                                                 (e)  R. 
 | 
 |
What
  is the field on a cell header in the ATM layer determines whether a cell can
  be dropped. 
(a)  VPI                   (b)  VCI                   (c)  CLP                  (d)  GFC                              (e)  PT. 
 | 
 |
Which
  of the following uses the greatest number of layers in the OSI model? 
(a)  Bridge               (b)  Repeater            
(c)  Router               (d)  Gateway            (e)  None of the above. 
 | 
 |
Which
  of the following layer is also called as Application Adaptation Layer? 
(a)   Simple and
  effort adaptation layer 
(b)   Simple and
  efficient adaptation layer 
(c)   Simple and
  efficient abnormal layer 
(d)   Simple and
  effort less adaptation layer 
(e)   Sample and
  efficient adaptation layer. 
 | 
 |
A
  packet traveling from one Token Ring network to another Token Ring network
  uses which of the following services of a device (each network is an
  independent network)  
(a)  Simple bridge                                  (b)  Repeater 
(c)  Router                                             (d)  Transparent bridge                               (e) 
  Gateway  
 | 
 |
What
  type of addressing is specifically used by the transport layer? 
(a)   Station
  addresses 
(b)   Network
  addresses  
(c)   Application
  program port addresses  
(d)   Dialog addresses
   
(e)   Interface
  addresses  
 | 
 
Answers
11. 
 | 
  
Answer :  (c) 
Reason : 10101010
  bit pattern is used to  indicate
  an error if an odd parity approach is used.  
 | 
 
Answer :  (d) 
Reason : 10Base5:500m,
  100      10Base2: 200m,   30    . 
 | 
 |
Answer :  (c) 
Reason : The
  acronym ADSL stands for  Asymmetric Digital
  Subscriber Line. 
 | 
 |
Answer :  (c) 
Reason : Forty
  stations are on an Ethernet LAN. A 10-port bridge segments the LAN.  The effective average data rate of each
  station is 2.5 Mbps. 
 | 
 |
Answer :  (a) 
Reason : Q
  (qualifier) bit in the X.25 standard (GFI general format identifier) allows
  the user to define the source of control information.            
 | 
 |
Answer :  (c) 
Reason : CLP
  field on a cell header in the ATM layer determines whether a cell can be
  dropped. 
 | 
 |
Answer :  (d) 
Reason : Gateway
  is internetworking device , which is the greatest number of layers in the OSI
  model.  
 | 
 |
Answer :  (b) 
Reason : Application
  Adaptation Layer 5 is also called as Simple and efficient adaptation layer. 
 | 
 |
Answer :  (d) 
Reason :        A
  packet traveling from one Token Ring network to another Token Ring network
  uses the services of a transparent bridge. 
 | 
 |
Answer :  (c) 
Reason : Application program port addresses is the type of addressing
  is specifically used by the transport layer. 
 | 
 
thank you for describing the answers.Its very useful
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