Ethernet networks can be cabled in a number of topologies, depending on what works best in each environment. As more nodes are added, the efficiency of Ethernet decreases. Select the best answer as to why Ethernet becomes less efficient as size increases.
Options: Network collisions occur, Repeaters cannot increase the signal strength sufficiently, Cable terminators do not reflect the signal properly, Cable terminators do not absorb the signal properly
. Which of the following is true regarding Referential Integrity?
Options: Every primary-key value must match a primary-key value in an associated table
B. Every primary-key value must match a foreign-key value in an associated table
C. Every foreign-key value must match a primary-key value in an associated table
D. Every foreign-key value must match a foreign-key value in an associated table
Options: Use a protocol to ensure that the system will never enter a deadlock state.
B. Allow the system to enter the deadlock state and then recover.
C. Pretend that deadlocks never occur in the system.
D. All of the Above
Options: using several computers to control one large machine, using one computer to control several machines, complete elimination of a need for a human operator., eliminating computers from the manufacturing process
A characteristic of a file server is which of the following?
Options: Manages file operations and is shared on a network., Manages file operations and is limited to one PC., Acts as a fat client and is shared on a network., Acts as a fat client and is limited to one PC.
4.The complexity of the average case of an algorithm is
Options: (A)Much more complicated to analyze than that of worst case (B) Much more simpler to analyze than that of worst case (C) Sometimes more complicated and some other times simpler than that of worst case (D) None of the above 1