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  • Question

  • You develop a Windows-based application that enables to enter product sales. You add a subroutine named XYZ. You discover that XYZ sometimes raises an IOException during execution. To address this problem you create two additional subroutines named LogError and CleanUp. These subroutines are governed by the following rules: ? LogError must be called only when XYZ raises an exception. ? CleanUp must be called whenever XYZ is complete. You must ensure that your application adheres to these rules. Which code segment should you use?


  • Options
  • A. try { XYZ(); LogError(); } catch (Exception e) { CleanUp(e); }
  • B. try { XYZ(); } catch (Exception e) { LogError(e); CleanUp(); }
  • C. try { XYZ(); } catch (Exception e) { LogError(e); } finally { CleanUp(); }
  • D. try { XYZ(); } catch (Exception e) { CleanUp(e); } finally { LogError(); }

  • Correct Answer
  • try { XYZ(); } catch (Exception e) { LogError(e); } finally { CleanUp(); } 

    Explanation

    We must use a try?catch?finally construct. First we run the Comapany() code in the try block.Then we use the LogError() subroutine in the catch statement since all exceptions are handled here. Lastly we put the CleanUp() subroutine in the finally statement since this code will be executed regardless of whether an exception is thrown or not.

    • More questions

    • 1. Which two descriptions are correct about characteristics of IPv6 unicast addressing? (Choose two) A. Global addresses start with 2000::/3. B. Link-local addresses start with FF00::/10. C. Link-local addresses start with FE00:/12. D. There is only one loopback address and it is ::1.
    • Discuss
    • 2. What are the six OSPF route types?
    • Discuss
    • 3. How many non- overlapping channels are available with 802.11b?

    • Options
    • A. 3
    • B. 12
    • C. 23
    • D. 40
      • Discuss
    • 4. Which IEEE committee has been sanctioned by WAP and is called WPA2?
    • Discuss
    • 5. When a station sends a transmission to the MAC address ff : ff : ff : ff : ff : ff, what type of transmission is it?

    • Options
    • A. Unicast
    • B. Multicast
    • C. Anycast
    • D. Broadcast
      • Discuss
    • 6. In the operation of CSMA/CD, which host(s) have priority after the expiration of the backoff algorithm?

    • Options
    • A. All hosts have equal priority
    • B. The two hosts that caused the collision will have equal priority
    • C. The host that sent the jam signal after the collision
    • D. The host with the highest MAC address
      • Discuss
    • 7. What is the Classs A Private IP address space?
    • Discuss
    • 8. What is the Class C private IP address space?
    • Discuss
    • 9. To use VLSM, what capability must the routing protocols in use possess?

    • Options
    • A. Support for multicast
    • B. Multi-protocol support
    • C. Transmission of subnet mask information
    • D. Support for unequal load balancing
      • Discuss
    • 10. If you wanted administrators to see a message when logging into the router, which command would you use?

    • Options
    • A. message banner motd
    • B. banner message motd
    • C. banner motd
    • D. message motd
      • Discuss

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