Which two devices are needed when a digital leased line is used to provide a connection between the customer and the service provider? (Choose two.)
A. dialup modem
B. access server
C. DSU
D. CSU
E. Layer 2 switch
DSU
CSU
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Which of the following is NOT a valid disaster recovery planning step?
a. maintain your documentation offsite b. maintain offsite backups c. run automated monitoring tools d. run all core services under administrator privilege
State whether each of the following is true or false. If false, explain why.
1) All virtual functions in an abstract base class must be declared as pure virtual functions. 2) Referring to a derived-class object with a base-class handle is dangerous. 3) A class is made abstract by declaring that class virtual. 4) If a base class declares a pure virtual function, a derived class must implement that function to become a concrete class. 5) Polymorphic programming can eliminate the need for switch logic.
After you install the SNMP service, make sure that it is started, is set to start automatically, and is set up to have a(n) ____________________ of hosts that share use of the service.
Fill in the blank(s) with the appropriate word(s).
? Critical Thinking Questions ? The analysts at Techno InfoSystems are considering the four-model approach to system development for a new client. ?If they make use of the four-model approach, which of the following is a likely outcome?
A. ?Time taken to develop the model increases. B. ?Costs needed to develop a logical and physical model of the current system will be less. C. ?It will not be possible to get a clear picture of the current system functions before modifications are made. D. ?The requirements of a new information system will always be different from the current information system.