Discuss the improvements of NFS version 4 over NFS version 3.
What will be an ideal response?
NFS version 4 comes with several improvements compared to version 3. These include:
• The mount and lock protocol are now part of the NFS protocol, simplifying firewall rules for NFS. NFS uses TCP port 2049; UDP is no longer supported.
• Using Kerberos, it is possible to allow access on a per-user basis (version 3 was based only on IP addresses or DNS names).
• Encryption is part of the specification. While Secure-RPC allowed encryption with version 3, it was hardly ever used.
• Additional improvements concern the use of user@computername instead of numeric IDs to identify users, ACLs, and changes in the way files are locked.
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Which of the following statements is false?
a) MainPage.xaml defines the first Page that’s loaded in the app. b) StandardStyles.xaml (in the Common folder) defines styles that enable your app’s GUI to have the look-and-feel of Windows Store apps. c) The Assets folder typically contains media files, such as images, audio and video files. By default this folder contains four images that are used as logos and a splash screen. d) The Standard folder contains files typically used by all Pages in an app, such as the StandardStyles.xaml file.
Answer the following statements true (T) or false (F)
1. A logic bomb is the event or condition that determines when the payload is activated or delivered. 2. Many forms of infection can be blocked by denying normal users the right to modify programs on the system. 3. A macro virus infects executable portions of code. 4. E-mail is a common method for spreading macro viruses. 5. In addition to propagating, a worm usually carries some form of payload.
Explain the function of the following registers in a CPU
a. PC b. MAR c. MBR d. IR
Method calls cannot be distinguished by ________.
a. method name b. return type c. parameter lists d. method signature