● In  software  engineering  and  systems  engineering，__(71)__is  a  description of a system’s behavior as it responds to a request that  originates  from  outside of that system.
 

（71）A．black box

B．business rule

C．use case

D．traceability matrix

●   The  standard  (IEEE  802)  format  for  printing __(72)__ in  human-friendly  form is  six  groups  of  two  hexadecimal  digits，  separated  by  hyphens  (-)  or  colons  (:)， in  transmission  order，  e.g.01-23-45-67-89-ab， 1:23:45:67:89:ab.This form is also commonly used for EUI-64.
 

（72）A．hard disk logical block address 

B．IP address

C．mail address  　

D．MAC address

● __(73)__operate by distributing a workload evenly over multiple back end nodes. Typically the cluster will be configured with multiple redundant load-balancing front ends.
 

（73）A．High-availability clusters 

B．Load-balancing clusters

C．Grid computing 

D．Cloud Computing

● A  PM  wanted  to  show  management， visually， how quality controls were affecting processes.The best tool to accomplish this is__(74)__ .
 

（74）A．Diagrams

B．Histograms 

C．Flowcharts 

D．Control charts

● Configuration  management  is  the  process  of  managing  change  in  hardware， software， firmware， documentation， measurements， etc.As change requires an initial  state  and  next  state，  the  marking  of  significant  states  within  a  series of  several  changes  becomes  important.The identification of significant states within the revision history of a configuration item is the central purpose of __(75)__identification.
 

（75）A．baseline

B．value

C．cost

D．Control