10 most difficult computer riddles A list of computer related questions that are most often answered incorrectly Games quiz What was the original name of Pac-Man?Puck-Man. The character's name was originally written in English as "Puck-Man", but when Namco localized the game for the United States they changed it to "Pac-Man", fearing that vandals would change the P in Puck to an F. very hard 21% Peck-ManPeck-Man6%Puck-ManPuck-Man21%Man-PackMan-Pack16%Eat MonsterEat Monster55%Created by: Tschuka. Statistics based on 705 answers in 3 languages »games riddles » In case of fiber-optic cables, which transmission mode is used for transmitting data over long distances?Single mode. In fiber-optic communication, a single-mode optical fiber (SMF) is an optical fiber designed to carry light only directly down the fiber - the transverse mode. These modes define the way the wave travels through space, i.e. how the wave is distributed in space. very hard 25% InfraredInfrared20%MultimodeMultimode33% Radio Radio20%Single modeSingle mode25%Created by: Tschuka. Statistics based on 207 answers in 2 languages »network riddles » Which type of DNS record is used by mail servers to determine where to send e-mail?MX record. Mail Exchange (MX) records are DNS records that are necessary for delivering email to your address. In simple DNS terms, an MX record is used to tell the world which mail servers accept incoming mail for your domain and where emails sent to your domain should be routed to. If your MX records are not pointed to the correct location, you will not receive emailvery hard 25% CNAME recordCNAME record20%A recordA record14%SMTP recordSMTP record39%MX recordMX record25%Created by: Tschuka. Statistics based on 227 answers in 2 languages »network riddles » The first text message (SMS) in history had content ... "merry Christmas". Engineer Neil Papworth sent the first SMS on December 3rd, 1992, when he wrote "merry Christmas" on a computer and sent it to the cellphone of Vodafone director Richard Jarvis. It was a modest start, but it ultimately changed technology and even social norms. very hard 35% "best wishes ""best wishes "11%"happy New Year""happy New Year"17%"hello""hello"35% "merry Christmas" "merry Christmas"35%Created by: Tschuka. Statistics based on 300 answers in 3 languages »computer science riddles » A NIC is ....A computer card that offers dedicated full time access to the internet. A network interface card (NIC) is a circuit board or card that is installed in a computer so that it can be connected to a network. A network interface card provides the computer with a dedicated, full-time connection to a network. Personal computers and workstations on a local area network (LAN) typically contain a network interface card specifically designed for the LAN transmission technology hard 41% A computer card that offers a modem connectionA computer card that offers a modem connection26%A computer card that offers dedicated full time access to the internetA computer card that offers dedicated full time access to the internet41%A computer card that offers as needed access to the internetA computer card that offers as needed access to the internet8%A computer card that offers a local area networkA computer card that offers a local area network22%Created by: Tschuka. Statistics based on 390 answers in 2 languages »network riddles » Network layer device that to determine the optimal path along which network traffic should be forwarded is;Router. A router is a computer whose software and hardware are customized to move data between computer networks. They are responsible for making sure traffic between computers gets where it needs to go. They do this by choosing the shortest path between the computers using a complicated system of rules called Routing Protocols. hard 48% RouterRouter48%SwitchSwitch11%HubHub22%ServerServer17%Created by: Tschuka. Statistics based on 269 answers in 2 languages »network riddles » Which of the following is not an operating system?None of the above . OS X is Apple's operating system that runs on Macintosh computers. DOS is a family of disk operating systems. Windows 7 is a personal computer operating system developed by Microsoft. hard 49% MAC OSXMAC OSX14%DOSDOS31%Windows 7Windows 74%none of the above none of the above 49%Created by: Tschuka. Statistics based on 333 answers in 2 languages » Social Networking involves communication between; Two or more people. Social networking is the practice of expanding the number of one's business and/or social contacts by making connections through individuals, often through social media sites such as Facebook, Twitter, LinkedIn and Google+. hard 55% Two computersTwo computers13%A human and a computerA human and a computer14%Two or more peopleTwo or more people55%A computer and a routerA computer and a router16%Created by: Tschuka. Statistics based on 349 answers in 2 languages »network riddles » Radio waves and microwaves are used in which of the following communications?Wireless. The most common wireless technologies use radio waves. With radio waves distances can be short, such as a few meters for Bluetooth or as far as millions of kilometers for deep-space radio communications. Somewhat less common methods of achieving wireless communications include the use of other electromagnetic wireless technologies, such as light, magnetic, or electric fields or the use of sound. average 61% WirelessWireless61%Fiber opticsFiber optics15%IP TelephonyIP Telephony15%Image sensorImage sensor7%Created by: Tschuka. Statistics based on 337 answers in 2 languages »network riddles » Which one is the keyboard shortcut for 'paste'? Ctrl + V. In many GUI environments, including Microsoft Windows and most desktop environments based on the X Window System, and in applications such as word processing software running in those environments, control (Ctrl) -V can be used to paste text or other content from the clipboard at the current cursor position. Control-V was one of a handful of keyboard sequences chosen by the program designers at Xerox PARC to control text editing.easy 74% Ctrl + PCtrl + P7%Ctrl + XCtrl + X7%Ctrl + VCtrl + V74%Ctrl + CCtrl + C11%Created by: Tschuka. Statistics based on 239 answers in 2 languages » Play games quiz and see all the questions.