11.) What does the command “IP name-server 255.255.255.255? Accomplish?
A.) It disables domain name lookup.
B.) It sets the domain name lookup to be a local broadcast.
C.) This is an illegal command.
D.) The command is now defunct and has been replaced by “IP server-name ip any”
Correct Answer: D
12.) Which OSI layer establishes, maintains and terminates sessions between hosts?
A.) Application
B.) Physical
C.) Data-Link
D.) Presentation
E.) Network
F.) Session
Correct Answer: F
13.) Which of the following performs modulation and demodulation?
A.) Fiber optics
B.) Satellite
C.) Coaxial cable
D.) Modem
E.) None of the above
Correct Answer: D
14.) Layer one of the OSI model is
A.) Physical layer
B.) Link layer
C.) Transport layer
D.) Network layer
E.) None of above
Correct Answer: A
15.) Which layer is responsible for flow control with sliding windows and reliability with sequence numbers and acknowledgments?
A.) Transport
B.) Application
C.) Internet
D.) Network Interface
Correct Answer: B, C
