is a mechanism used for protecting the users outside of network from accessing some non-authorized computer resources.

A．Network Card

B．protocol

C．Firewall

D．Router

[单选题]( )is a mechanism used for protecting the users outside of network from acc

[单选题]( )is a mechanism used for protecting the users outside of network from acc

[单选题]F．irewall is a(74) mechanism used by organizations to protect their LANs from the Internet.A．reliableB．stableC．peacefulD．security

[单选题]F．irewall is a （74） mechanism used by organizations to protect their LANs from the Internet.（74）A． reliableB． stableC． peacefulD． security

[单选题]F．irewall is a _______ mechanism used by organizations to protect their LANs from the Internet．A．reliableB．stableC．peacefulD．SecurityA．B．C．D．

[单选题]A disk scheduling mechanism in an operating system causes the disk arm to sweepbackand forth across the disk Surface servicing all requests in its path．This is a (73) ．(73) A．First Come First ServeB．Shortest Seek Time FirstC．ScanD．None of the above

[单选题] Firewall is a ___(74)___ mechanism used by organizations to protect their LANs fromInternet.(74)A. reliable B. stable C. peaceful D. security

[单选题]A． disk scheduling mechanism in an operatingsystem causes the disk arm to sweepback and forth across the disk surface servicing all requests in its path. This is aA．First Come First ServeB．Shortest Seek Time FirstC．ScanD．None of the above

[单选题]A disk scheduling mechanism in an operating system causes the disk arm to sweepback and forth across the disk surface servicing all requests in its path. This is a （） :（）A. First Come First Serve B. Shortest Seek Tn-ne FirstC. Scan D. None of the abo

[单选题]The young seedlings remained alive ______the protecting snow.A.underB.below