Which of the following Layer 1 WAN technologies is not normally used as last mile service but rather traverses multiple ISP networks, connecting these networks to the Internet backbone? a. SONET (Synchronous Optical Network)
b. digital subscriber line (DSL)
c. Carrier-Ethernet Transport (CET)
d. T-carrier (T1s, fractional T1s, and T3s)

What are procedures that keep a data base current

In deadlock avoidance using banker’s algorithm, what would be the consequence(s) of: (i) a process declaring its maximum need as maximum possible for each resource. in other words, if a resource a has 5 instances, then each process declares its maximum need as 5. (ii) a process declaring its minimum needs as maximum needs. for example, a process may need 2-5 instances of resource a. but it declares its maximum need as 2.

Jennifer has to set up a network in a factory with an environment that has a lot of electrical interference. which cable would she prefer to use? jennifer would prefer to use because its metal sheath reduces interference.