1)

In the GSM mobile network architecture, there is a database (Home Location Register) that gives the last known location of each mobile.

Select one:

True

False

Part B)

The legacy mechanism for designating the IPv4 network and host address portions was to make the division according to the first few bits. Which one of the following is not one of the resulting the IPv4 address classes?

Select one:

a. class A

b. class B

c. class C

d. class D

e. class E

Part C)

In the Plain Old Telephone System (POTS), the local loop between customer and local central office consists of:

Select one:

a. 2 wires

b. 3 wires

c. 4 wires

d. 8 wires

Part D)

MD-5 and SHA-1 secure-hash codes are often used in network error-detection because they are very fast to compute.

Select one:

True

False

Part E)

IPv4 multicast addresses remain as the last remnant of the Class A/B/C/ scheme. Multicast addresses are class:

Select one:

a. A

b. B

c. C

d. D

e. E