The question states that the message "null" was displayed when *#06# was dialed on a phone. This code is used to display the International Mobile Equipment Identity (IMEI) number.

You're on a roll — Step 1: Analyze Question 34. The question states that the message "null" was displayed when *#06# was dialed on a phone. This code is used to display the International Mobile Equipment Identity (IMEI) number. • If *#06# displays "null", it indicates that the phone's IMEI is either missing or corrupt. A missing or corrupt IMEI prevents the phone from registering on a cellular network. The correct option is B. Step 2: Analyze Question 35. The user observed no notification for incoming calls, but volume, ringtone, vibration settings, and sound components were functioning. • This scenario describes a situation where the phone is technically capable of producing notifications, but they are being suppressed. • Do Not Disturb mode (DND) is specifically designed to silence notifications, calls, and alerts, while other phone functions remain operational. Mute would silence everything, Airplane mode disables network, and Meeting mode is a less common, often custom, setting that might be similar to DND but DND is the most direct and common feature for this behavior. The correct option is D. Step 3: Analyze Question 36. A technician measured the resistance of a mouthpiece (microphone) using a multimeter and read 900 ohms. • A typical electret condenser microphone (common in mobile phones) has a very high impedance and usually requires a bias voltage. When measured with a multimeter in resistance mode, a healthy electret microphone might show a very high resistance (often in the megaohms range) or an open circuit, or a specific resistance if it has an internal resistor. However, a reading of 900 ohms is unusually low for a functional electret microphone's internal resistance or its associated circuitry when measured directly. A reading of 900 ohms for a component that should have a much higher or specific resistance often indicates a fault, such as a short or internal damage. Compared to a "good condition" mouthpiece, 900 ohms is more indicative of a defect. The correct option is A. Step 4: Analyze Question 37. The question asks what a mobile phone booted into safe mode will disable. • Safe mode in Android is a diagnostic mode that starts the operating system with only essential system applications and services. It temporarily disables all third-party applications (apps installed by the user) to help diagnose issues caused by problematic apps. The correct option is D. Step 5: Analyze Question 38. The question asks for the action required to initiate system recovery mode for an Android phone stuck at startup. • The combination of keys to enter recovery mode varies slightly between manufacturers, but a common and widely used combination for many Android devices is to press and hold the power button and volume down keys together when the phone is off or restarting. Some devices use volume up, or a home button, but power + volume down is very common for recovery or fastboot. The correct option is D. Step 6: Analyze Question 39. The question asks which payments are compulsory for a GSM business entrepreneur. • I. Insurance fee: While recommended, insurance is generally not a compulsory payment for starting a business. • II. Income tax: All businesses are legally required to pay income tax on their profits. • III. Business registration: It is compulsory to register a business with the relevant authorities to operate legally. • IV. Advertisement fee: Advertising is a business expense, but not a compulsory payment required by law to operate the business. Therefore, income tax and business registration are compulsory. The correct option is C. Step 7: Analyze Question 40. The question describes a partner in a two-man partnership GSM business deciding to walk away. • When a partner leaves a partnership, especially a two-man partnership, the business loses one of its owners and contributors. This directly leads to a reduced business capital as the departing partner's share or contribution is removed or needs to be bought out. It can also lead to reduced liability for the remaining partner, but reduced capital is a more direct and immediate consequence for the business itself. Increased profit margin is unlikely, and reduced customer satisfaction is a potential indirect effect, but not the primary direct consequence on the business structure. The correct option is B. The final answers are: 34. B 35. D 36. A 37. D 38. D 39. C 40. B Got more? Send 'em!