| What layer of the OSI model handles the transmission of bites over a communications channel? |
| What is the next to higher level of the multi-level activities of communications which defines how the initial data is sent and transformed into the symbols that represent it before being actually transmitted with this specific signal value? |
| Which of the ff. coaxial cable connectors is called the UHF connector? |
| What satellite subsystem monitors on board conditions such as temperature and battery voltage and transmits this data back to a ground station for analysis? |
| What expresses the steepness of the skirts of the skirts selectivity of a radio receiver? |
| In SSB, the transmitter output is expressed in terms of _________? |
| Which of the ff. is the policy guidelines to govern the operation of cable TV in the |
| What is the standard signal format of a numeric paging receiver? |
| What is the critical capacitance variation of most varactors used in frequency modulators? |
| Helical antennas are often used for satellite tracking VHF because of? |
| What traffic model is based on the assumption that calls not immediately satisfied at the first attempt are held in the system until satisfied? |
| What does ICT mean? |
| What is the typical noise figure of metals, semiconductors, FET or MOSFET used at microwave frequency? |
| What is the 3rd layer of the OSI protocol model which sets up the path to transmit data between terminals and modulation is used? |
| What system specification for 3G wireless system uses as a wide rf channel efficient coding and multiple channels to provide for both low speed circuit and high speed packet services? |
| If the antenna current increases 3.3 times how much is the field strength increase? |
| What is the term used to describe a computer operating system allows multiple program to run simultaneously without interfering with each other |
| What is the 1st type of modulation using an SB microphone called? |
| What are used to allow fiber optics to operate at much higher data rates and over longer distances with the use of range and resist abrasion? |
| If the satellite is lunched at the speed exceeding 25000mph, the satellite will not go in orbit and will break away from the gravitational pull of the earth and go out in deep space what do you call this satellite? |
| What is used to improve the signal to noise ratio for either PCM or delta modulation signals? |
| In a system, if the system to have a net gain there would be a possibility of oscillation due to feedback from this reflection, what is this called? |
| What is the voltage of the local loop on hook? |
| In a propagation medium such in the glass of an optical fiber ____ is the scattering of an electromagnetic wave by particles with the size about equal or greater than the wavelength? |
| What is the ratio of speed of light in air to the speed of light in another medium? |
| What LED is usual signal source for plastic fiber? |
| Why is pulse code modulation preferred over PAM? |
| What carrier shift results with insufficient grid excitation to a grid modulated stage? |
| Why are printed circuit board such as stripline and microstrip implemented on transmission lines? |
| In satellite communication system, _______ is the satellite component that senses the time or the incidence angle of solar radiation and provides electrical signal that may be used to compute the satellite orientation? |
| A few centimeters long solid insulated hook-up wire that provides small capacitance to the ground that is adjusted during circuit alignment by bending slightly in one direction or another, what do you call this wire? |
| What is the acronym GMDSS stand for? |
| What is the main disadvantage of fiber optic cable made of glass? |
ANSWERS:
| Physical layer |
| Coding |
| PL 259 |
| TTC |
| Shape factor |
| Peak envelop power |
| |
| NEC B3 standard |
| 12 to 1 |
| Faraday’s effect |
| Erlang C |
| Information and Communication Technology |
| 2 dB or less |
| Baseband |
| WCDMA |
| 3.3 times |
| Multi-tasking |
| Absorption or loop |
| Polyethylene |
| Space probe |
| Companding |
| Singing |
| 48Vdc |
| MIE scattering |
| Index of refraction |
| Red LED |
| Because of its superior noise immunity |
| Positive |
| To create resonance circuits and filters |
| Sun sensor |
| Gimmick |
| Global maritime distress and safety system |
| Brittleness |
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