CET 751 Computer Hardware and Networking Fundamentals Summer 2002 Exam III – B Name ___Cliff De Long__________________________________ Read each question carefully and then decide on the single best choice that answers the question. Indicate your choice on the Scantron sheet. If you make an eraser mark, please be certain to circle the number that corresponds to that question. 1. Which of the following is not considered to be an essential part of the technician's toolkit if you were working with repair on a daily basis? D a. bootable rescue disks b. flat-head and Philips screwdrivers c. grounding wrist or heel strap d. All of the above would be an essential part of a toolkit. 2. _____D____ is NOT an anitvirus program on the market today. a. F-Protect b. McAfee c. Norton Antivirus d. Norton Ghost 3. PC problems fall into one of two general categories: problems that prevent the PC from booting and __________C______________. a. relate to AC power b. involve attached peripherals c. problems that occur after a successful boot d. are related to the operator 4. When a PC fails to boot, how many beeps would you expect to hear? I expect to hear one beep, if I hear more than one, I ususally look for failed RAM or badly seated cards, etc. A Failing to boot is not the same as failing POST. a. one beep b. has no beeps c. more than one beep d. beeps tell you nothing 5. Pressing F8 at startup in Windows 9X will give you C a. The DOS prompt b. Start Menu c. Safe Mode d. None of the above 6. To capture a screen in Windows 9x, press ____C____ to copy the screen to the Clipboard. See Code at bottom of exam. Alt+Prt-Scr a. Alt-P b. Shift + Insert c. Prt Scr d. There is not a way to copy a Windows 9x screen to the Clipboard 7. When ink jet print quality is poor, the first thing to suspect is the ___C____. a. printer is overheating b. ribbon c. ink cartridge d. printer driver 8. A digital alternative to regular phone lines is __C____. a. ASIC b. POTS c. DSL d. None of the above. 9. PC-to-modem communication is ______; modem-to-modem communication is ______. C a. digital, digital b. analog, digital c. digital, analog d. analog, analog 10. By a process called ____A___, a modem converts the binary information from the computer into an analog signal that can travel over the phone line. a. modulation b. infarction c. bridging d. transmigration 11. Communication that allows transmission in both directions at the same time is called __B___. a. echo plex b. full-duplex c. half-duplex d. triplex 12. The ___C___ communications standard for 56-Kbps is the most widely accepted. a. x2 b. K56flex c. V.90 d. X-15 13. The speed established between the two modems is called ___D__ speed. a. modem-to-modem b. local c. port d. line 14. The speed established between the calling PC and its modem is called __C___ speed. a. modem-to-modem b. local c. port d. line 15. The chip that manages modem communications is ______C_________. a. TAPI b. ATAPI c. UART d. SCAM 16. When referring to digital data communications, data transfer capacity is called ___D_____. a. pipe size b. MHZ c. line speed d. bandwidth 17. A cable modem, usually provided by the cable company, connects to a __D___ installed in your PC. a. ISDN modem b. serial port c. modem d. Ethernet card 18. Hardware flow control uses electrical signals from a PC to its modem that are not part of the data flow channel. This method is called _______C_________? a. In-band signaling b. Out-of-band signaling c. Handshaking d. All of the above 19. Modems use what kind of port? A a. Serial b. Parallel c. IDE d. All of the above 20. A method of controlling the flow of data by sending a message to stop data flow is called: A a. Flow control b. Serial port communication c. UART d. All of the above 21. On an internal modem, the UART that is used is on the: C, however, I have worked on several motherboards that had integrated modems, so althought there was a UART chip for controlling the serial port on the mother board, ther was also one for controlling the internal modem. In this real-life scenario, then C would also be correct. a. External card b. System board c. Internal modem expansion card d. None of the above 22. The RS-232c standard controls uses _____C___ wires to transmit information on a serial cable. a. 4 b. 6 c. 9 d. 12 23. UART is a acronym for the phrase ________________B____________________. a. Uniform articulation and retransmission b. Universal asynchronous receiver transmitter c. Uniform articulate real-time terminal d. None of the above 24. When two modems begin to communicate the internal agreement made as to how to send and receive data is called? C a. Flow control b. Serial port communication c. handshaking d. duplexing 25. – Digital Subscriber Line (DSL) ties up a phone line like a dial-up modem. B a. True b. False DSL uses the existing phone line and in most cases does not require an additional phone line. This gives "always-on" Internet access and does not tie up the phone line. No more busy signals, no more dropped connections, no more waiting for someone in the household to get off the phone. An application can simulate a press of the PRINTSCREEN key in order to obtain a screen snapshot and save it to the clipboard. To do this, call keybd_event with the bVk parameter set to VK_SNAPSHOT, and the bScan parameter set to 0 for a snapshot of the full screen or set bScan to 1 for a snapshot of the active window #include "stdafx.h" #include "toclip.h" /**************************************************************** * toClipboard * Inputs: * CWnd * wnd: Window whose contents are to be sent * to the clipboard * BOOL FullWnd: TRUE for entire window, * FALSE for client area * Result: void * * Effect: * Copies the contents of the client area or the window * to the clipboard in CF_BITMAP format. *****************************************************************/ void toClipboard(CWnd * wnd, BOOL FullWnd) { CDC dc; if(FullWnd) { /* full window */ HDC hdc = ::GetWindowDC(wnd->m_hWnd); dc.Attach(hdc); } /* full window */ else { /* client area only */ HDC hdc = ::GetDC(wnd->m_hWnd); dc.Attach(hdc); } /* client area only */ CDC memDC; memDC.CreateCompatibleDC(&dc); CBitmap bm; CRect r; if(FullWnd) wnd->GetWindowRect(&r); else wnd->GetClientRect(&r); CString s; wnd->GetWindowText(s); CSize sz(r.Width(), r.Height()); bm.CreateCompatibleBitmap(&dc, sz.cx, sz.cy); CBitmap * oldbm = memDC.SelectObject(&bm); memDC.BitBlt(0, 0, sz.cx, sz.cy, &dc, 0, 0, SRCCOPY); wnd->GetParent()->OpenClipboard(); ::EmptyClipboard(); ::SetClipboardData(CF_BITMAP, bm.m_hObject); CloseClipboard(); memDC.SelectObject(oldbm); bm.Detach(); // make sure bitmap not deleted with CBitmap object } CET 751 Computer Hardware and Networking Fundamentals Summer 2002 Exam III – B Essay Questions Name ____Cliff De Long______________________________________________ 26. Name and describe 5 of the 10 Fundamental Rules of PC troubleshooting. Approach the problem systematically. Start ant the beginning and step through in an analytical deductive manner. Divide and conquer. Isolate the problem. As an example, remove newly installed devices first, and then if you are frustrated enough, pull all the drives off and boards out – you can get a post with nothing more than RAM, a keyboard and a video adapter – then add the devices back in one at a time. Many times I have seen machines that wouldn’t post because of badly seated RAM or failed CD-ROM drive motors. Uninstall or reinstall application software, etc. Don’t overlook the obvious. Sounds easier than it really is - Is it plugged in? Turned on? Check the simple things first. Try the easier repair first when faced with multiple possibilities in your diagnosis. Make no assumptions. Makes an ass out of u and me! Be from Missouri – “Show me.” Become a researcher. Been there – done that – surfed it. Use the combined knowledge available to you from everyone that has already faced your problem. Write things down. Draw pictures, make lists, I carry a pocket notebook because I just can’t remember everything anymore. Reboot and start over. Especially if you are working with Microsoft products! Establish your priorities. Satisfy the customer! Quality is Job 1. Keep your cool. Nah – just fdisk it and reload from the backup or ghost image – sometimes it’s the fastest way! Definitely leads to cleaner registries… Don’t assume the worst. Once you overwrite data you can’t recover it. Theoretically it is possible – but only admissible in court in cases dealing with National Security. If in doubt – low level format usually destroys data beyond recovery – but a car air conditioner clutch magnet energized over the drive always works for destruction of data. Something made the fuse blow in the power supply – probably the fan motor – a $2 fan is cheaper than a $30 power supply – but maybe your time is more valuable… Know your starting point. Check it out with the user there. Problems shouldn’t be intermittent – they should be replicable. 27. List three questions you should ask when troubleshooting a printer problem? Is it turned on? Plugged in? Select (online) light on? Any lights flashing? Got the right driver? TCP/IP port? 28. What three speeds dictate the overall data transmission speed? Port speed calling, line speed, port speed answering 29. List three digital alternatives to analog modem communications that are available in your area. ISDN, T1, T3, OC3, OC12, OC48, ADSL, asynchronous satellite, cable modem