A. A spin stabilized satellite used solar cells mounted on a cylinder body that continuously rotates so that 40 a time and it also uses gyroscopic action of a spinning satellite to maintain its orientation towards the earth and the sun.
B. A spin stabilized satellite uses solar panels whose cells are continually oriented toward the sun
C. Satellite transponders use lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations.
D. satellite transponders use a single frequency for reception and transmission from one point on earth to another
Correct Answer: A spin stabilized satellite used solar cells mounted on a cylinder body that continuously rotates so that 40 a time and it also uses gyroscopic action of a spinning satellite to maintain its orientation towards the earth and the sun.
8. On a class C network with a subnet mask of 192, how many subnets are available?
A. an error-detecting code based on a summation operation performed on the bits to be checked.
B. a check bit appended to an array of binary digits to make the sum of all the binary digits.
C. a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and thus the presence of the errors in detected
D. the ratio of the number of data units in error to the total number of data units