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Assignment 4-Cont. - 14103_147
Assignment 4-Cont. - 14103_149

Fire Controlman Volume 06-Digital Communications
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4-46. Which of the following items is a node in a  LAN  system? 1.  Twisted  pair  cable 2.   Communications   media 3.  Fiber-optic  cable 4.  Large  capacity  hard  drive 4-47. Twisted pair cable used in a LAN has which of the following advantages? 1.  High  data  transmission  speeds 2.  Low  costs  and  easy  to  install 3.  Shielded  from  electrical  interference 4.  Secure  data  transmission 4-48. In designing a LAN system that requires the transmission of digital data, audio, and video simultaneously, which of the following cables would be best suited to the  system? 1.  Twisted  pair 2.  Shielded  twisted  pair 3.  Broadband  coaxial 4.  Baseband  coaxial 4-49. Which of the following types of cable is immune  to  interference  from  electrical and electronic devices? 1.  Fiber  optic 2.  Baseband  coaxial 3.  Shielded  twisted  pair 4.  Telephone  cable 4-50. Which of the following devices provides the interface between the LAN and a personal  computer? 1.   Network   server 2.   NIC 3.   Disk   server 4.   Cables 4-51. Which of the following devices is used to 4-52. 4-53. 4-54. 4-55. manage the shared resources of the LAN? 1.   Network   server 2.   NIC 3.  Disk  server 4.   Network   monitor Early  disk  servers  suffered  from  which  of the  following  problems? 1.  Lack  of  security 2.  No  data  organization 3.  No  disk  management 4.  All  of  the  above Ensuring data integrity by preventing multiple users access to the same record at the same time is known as what process? 1.  File  locking 2.  Field  locking 3.  Record  locking 4.  Disk  lockout Which of the following servers was developed to provide reliable disk management  in  a  LAN? 1.  Disk  server 2.   Print   server 3.  File  server 4.   Network   server Which of the following functions is NOT performed  by  the  file  server? 1.  Routing  files  to  a  central  printer  for printing 2.  Processing  of  the  network  control software 3.  Converting  high-level  disks  calls  from a  workstation  to  low-level  disk commands 4.  Maintaining  the  list  of  user  privileges and  authorizations 34






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