COMPUTER QUIZ

COMPUTER QUIZ (To see correct answers, move mouse over options, answer will be highlighted)

1. Which of the following communication mode supports data transmission in     both directions at the same time?          a) Simplex     b) Duplex     c) Half simplex     d) Full duplex     e) Multiplex 2. Which of the following transmission techniques let computer to     alternatively send and receive data?     a) Duplex     b) Simplex     c) Half duplex     d) Full duplex     e) None of above 3.  Modulation is the process of :      a) Echoing every character that is received      b) Converting digital signals to analog signals      c) Converting analog signals to digital signals      d) Sending a file from one computer to another computer      e) None of above 4. A modem performs-     a) Modulation     b) Demodulation     c) Data compression     d) Both (a) & (b)      e) All (a), (b) & (c) 5. Which of the following keyboard format is most commonly used?     a) TWRITER     b) SPLITTER     c) QWERTY     d) Dvorak     e) None of the above 6. The function of key F4 in a word processing application is -     a) to repeat the last action     b) to open a saved document     c) to delete the highlighted text     d) to open context menu of highlighted text     e) None of above 7. Laser printer is an example of -     a) Impact printer     b) Inkjet printer     c) Non-Impact printer     d) Dot-matrix printer     e) None of above 8. which of the following is a term related with scanners?     a) Laser     b) TWAIN     c) QWERTY     d) Media     e) Cartridge 9. The resolution of a monitor depends on:     a) Dot pitch of the monitor     b) Number of bits representing a pixel     c) Number of pixels that can be displayed     d) Both (a) & (b)     e) All (a), (b) & (c) 10. What does the term ISO stands for?     a) Information System Output     b) International Standards Organization     c) International Systems organization     d) Integrated Services Organization     e) None of above

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LIST OF IT COMPANIES IN LUCKNOW

http://www.akwl.org/presentation/it_ites/it_firms_lko.pdf

UPDATE YOUR HARDWARE RESUME PROFILE

                                                        RESUME

NAMEXXXXXXXXXXXXX

Local Add.Xxxxxxxxxxxxxxxx

xxxxxxxxxxxxxxxxxxxxxxxxxx

Mob.9648XXXXXXXXXXXX

Email: xxxxxxxxxxx@gmail.com

Objective

Aspire to serve a reputed organization with best of my professional skill as a Hardware Engineer.

Personal Summary

• Expert in system installation, configuration, administration, and integration.
• Analytical and technical expertise.
• Expert in network operations.
• Creative, curious, analytical, and detail-oriented.
• Interactive ability and target centric

Technical Skills

• Operating Systems: Windows9X, Windows2000, Windows ME, Windows XP, Windows Vista, Linux, Unix, MS DOS.
• Hardware testing Tools: Multi meter, cable tester, Card tester, Soldering de-soldering .
• Application software Photoshop, Adobe reader, Winrar, DVD Convertor, Nero.
• Office Package: Microsoft Word, Microsoft Excel, Microsoft Access, Microsoft PowerPoint, Microsoft Outlook Express.
• Assembling and reassembling of computer peripherals

CMC Academy, 10/2011 - Present

  

Hardware Engineer.

• Conduct research, designing and develop, test, and supervise the installation of computer hardware.
• Install chips, circuit boards, systems, modems, keyboards, and printers.
• Design a variety of programs through computer.
• Perform the communications link between organization and customers.
• Work as an association looking into the hardware, software, training and standardization of computer systems.
• Attend meetings, seminars and conferences and take statewide tours.
• Maintain updated inventory of all hardware and software.
• Make coordination for installing and upgrading the current equipments and software.
• Maintain a standard configuration of equipment.
• Handled the management of hardware stock and projects.
• Identified the management position, duties and responsibilities.
• Looked after physical and investigative processes, including technical support.
• Accomplished the job of data recovery and system administration.

General Education

• Pursuing B.Sc. from xxxxxxxxxxxxxxxxxx
• High School from xxxxxxxxxxxxxxxxxxxx
• Intermediate from xxxxxxxxxxxxxxxxxxxx
• Tech(Hardware& Networking) from CMC Academy
• Specialization in Monitor, and printer

Permanent address

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Pin.23xxxxxxxxxxx

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Networking hardware

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Networking hardware or simply Networking equipment typically refers to devices facilitating the use of a computer network. Typically, this includes gateways, routers, network bridges, switches, hubs, and repeaters. Also, hybrid network devices such as multilayer switches, protocol converters and bridge routers. And, proxy servers, firewalls and network address translators. Also, multiplexers, network interface controllers, wireless network interface controllers, modems, ISDN terminal adapters and line drivers. And, wireless access points, networking cables and other related hardware.
Computer networking devices are units that mediate data in a computer network.^[1][2] Computer networking devices are also called network equipment, Intermediate Systems (IS)^{[citation needed]} or InterWorking Unit (IWU).^{[citation needed]} Units which are the last receiver or generate data are called hosts or data terminal equipment.^{[citation needed]}
The most common kind of networking hardware today is copper-based Ethernet adapters, helped largely by its standard inclusion on most modern computer systems. Wireless networking has become increasingly popular, however, especially for portable and handheld devices.
Other hardware prevalent within computer networking is datacenter equipment (such as file servers, database servers and storage areas), network services (such as DNS, DHCP, email etc) as well as other specific network devices such as content delivery.
Other diverse devices which may be considered networking hardware include mobile phones, PDAs and even modern coffee machines. As technology grows and IP-based networks are integrated into building infrastructure and household utilities, network hardware becomes an ambiguous statement owing to the increasing number of "network capable" endpoints.List of computer networking devices

• Gateway: device sitting at a network node for interfacing with another network that uses different protocols. Works on OSI layers 4 to 7.
• Router: a specialized network device that determines the next network point to which it can forward a data packet towards the destination of the packet. Unlike a gateway, it cannot interface different protocols. Works on OSI layer 3.
• Bridge: a device that connects multiple network segments along the data link layer. Works on OSI layer 2.
• Switch: a device that allocates traffic from one network segment to certain lines (intended destination(s)) which connect the segment to another network segment. So unlike a hub a switch splits the network traffic and sends it to different destinations rather than to all systems on the network. Works on OSI layer 2.
• Hub: connects multiple Ethernet segments together making them act as a single segment. When using a hub, every attached device shares the same broadcast domain and the same collision domain. Therefore, only one computer connected to the hub is able to transmit at a time. Depending on the network topology, the hub provides a basic level 1 OSI model connection among the network objects (workstations, servers, etc.). It provides bandwidth which is shared among all the objects, compared to switches, which provide a dedicated connection between individual nodes. Works on OSI layer 1.
• Repeater: device to amplify or regenerate digital signals received while sending them from one part of a network into another. Works on OSI layer 1.

Some hybrid network devices:

• Multilayer switch: a switch which, in addition to switching on OSI layer 2, provides functionality at higher protocol layers.
• Protocol converter: a hardware device that converts between two different types of transmissions, such as asynchronous and synchronous transmissions.
• Bridge router (brouter): a device that combines router and bridge functionality and therefore works on OSI layers 2 and 3.

Hardware or software components that typically sit on the connection point of different networks, e.g. between an internal network and an external network:

• Proxy server: computer network service which allows clients to make indirect network connections to other network services
• Firewall: a piece of hardware or software put on the network to prevent some communications forbidden by the network policy
• Network address translator (NAT): network service provide as hardware or software that converts internal to external network addresses and vice versa

Other hardware for establishing networks or dial-up connections:

• Multiplexer: device that combines several electrical signals into a single signal
• Network interface controller a piece of computer hardware to allow the attached computer to communicate by network
• Wireless network interface controller a piece of computer hardware to allow the attached computer to communicate by LAN
• Modem: device that modulates an analog "carrier" signal (such as sound), to encode digital information, and that also demodulates such a carrier signal to decode the transmitted information, as a computer communicating with another computer over the telephone network
• ISDN terminal adapter (TA): a specialized gateway for ISDN
• Line driver: a device to increase transmission distance by amplifying the signal. Base-band networks only.

Network Topologies

In computer networking, topology refers to the layout of connected devices. This article introduces the standard topologies of networking.

Topology in Network Design

Think of a topology as a network's virtual shape or structure. This shape does not necessarily correspond to the actual physical layout of the devices on the network. For example, the computers on a home LAN may be arranged in a circle in a family room, but it would be highly unlikely to find a ring topology there.

Network topologies are categorized into the following basic types:

bus

ring

star

tree

mesh

More complex networks can be built as hybrids of two or more of the above basic topologies.

Bus Topology

Bus networks (not to be confused with the system bus of a computer) use a common backbone to connect all devices. A single cable, the backbone functions as a shared communication medium that devices attach or tap into with an interface connector. A device wanting to communicate with another device on the network sends a broadcast message onto the wire that all other devices see, but only the intended recipient actually accepts and processes the message.

Ethernet bus topologies are relatively easy to install and don't require much cabling compared to the alternatives. 10Base-2 ("ThinNet") and 10Base-5 ("ThickNet") both were popular Ethernet cabling options many years ago for bus topologies. However, bus networks work best with a limited number of devices. If more than a few dozen computers are added to a network bus, performance problems will likely result. In addition, if the backbone cable fails, the entire network effectively becomes unusable.

Ring Topology

In a ring network, every device has exactly two neighbors for communication purposes. All messages travel through a ring in the same direction (either "clockwise" or "counterclockwise"). A failure in any cable or device breaks the loop and can take down the entire network.

To implement a ring network, one typically uses FDDI, SONET, or Token Ring technology. Ring topologies are found in some office buildings or school campuses.

Star Topology

Many home networks use the star topology. A star network features a central connection point called a "hub node" that may be a network hub, switch or router. Devices typically connect to the hub with Unshielded Twisted Pair (UTP) Ethernet.
Compared to the bus topology, a star network generally requires more cable, but a failure in any star network cable will only take down one computer's network access and not the entire LAN. (If the hub fails, however, the entire network also fails.)

Tree Topology

Tree topologies integrate multiple star topologies together onto a bus. In its simplest form, only hub devices connect directly to the tree bus, and each hub functions as the root of a tree of devices. This bus/star hybrid approach supports future expandability of the network much better than a bus (limited in the number of devices due to the broadcast traffic it generates) or a star (limited by the number of hub connection points) alone.

Mesh Topology

Mesh topologies involve the concept of routes. Unlike each of the previous topologies, messages sent on a mesh network can take any of several possible paths from source to destination. (Recall that even in a ring, although two cable paths exist, messages can only travel in one direction.) Some WANs, most notably the Internet, employ mesh routing.

A mesh network in which every device connects to every other is called a full mesh. As shown in the illustration below, partial mesh networks also exist in which some devices connect only indirectly to others.

BEETEL 450TC1 WIRELESS ADSL 2 + MODEM / ROUTER & 4 LAN

Protocol and Encapsulation: RFC 2364 PPP over ATM AAL5 (PPPoA) RFC 2516-PPP over Ethernet (PPPoE) RFC 1483 LLC & VCMUX (Bridge & Routing mode) RFC 1577 Classical IP over ATM
Network Access: IP routing protocols: statics routing and RIPv1,v2 802.1d transparent bridging TR 69 DHCP Support Firewall Support Multicast proxy support (IGMP Proxy) for video applications
Applications: MULTI NAT NAT QOS Port Triggering Port Mapping NAT Sessions IP Filtering MAC Filtering VPN pass through DNS Proxy Virtual Server,DMZ,PPP Half Bridge SNMP V1, V2 Support
Security: 64, 128, 256 bits WEP encryption, 802.1x, WPA Support SSID hidden , MultiSSID Support USer Isolation, MAC address filtering password protected system managment PAP/CHAP authentication for PPP mode
Wireless LAN Frequency Band: 2412 Mhz - 2462 Mhz (Norths America/FCC);  2412 Mhz- 2472 Mhz (ETSI/Europe); Dynamic rate Scaling from 54, 48, 36, 24, 12, 11, 9, 6, 5.5, 2, 1 Mb/s Modulation: OFDM with BPSK, QPSK, 16 QAM, 64QAM, DBPSK, DQPSK,CCK

RJ45 CAT5e UTP Ethernet LAN / ADSL Straight Cable

Light weight for traveling
Connect PC or laptop to network connectivity
Connects XBOX, PS2, Computer to DSL/Cable Modem, Hub, Switch, Router

• 4 pair copper wire Factory Assembled with PVC Grey Jacket Comes with RJ-45 Male to Male connectors on each end.
• To be used with all current network installations that connect PCs to wall jacks, Routers, DSL/Cable modems, Hubs and Switches etc
• Length: 5 meter
• Type: Straight Cable

OPERATING SYSTEM REQUIREMENTS

Microsoft Windows and Linux Hardware Requirements

Microsoft Vista's Hardware Requirements

Initial reports indicated that Microsoft Windows Vista (Longhorn), Microsoft's next major operating system scheduled for release in 2007, had exceedingly high minimum hardware requirements. However, they've dropped many of Vista's features. So far Microsoft indicates the minimum requirements for Windows Vista correlate with many PCs being sold today. It appears the new Aero Glass user interface will require the highest end video hardware available. 64 MB (128+ MB recommended) RAM on a high bandwidth AGP 8X or PCI Express 16-lane bus is required for the full "Aero Glass Experience."

One Microsoft Windows Vista beta tester reported "there are about 47+ process running. It uses about 150mb more ram then XP. And it takes an extra 8 seconds to start." (source no longer available and web archive missing: http://www.theartofennui.com/36/windows-vista/) That's with no applications running, only the operating system. Microsoft Windows Vista is obviously much less efficient than Microsoft Windows XP. The loss in efficiency is at least partly due to new graphics. The value of the trade-off between graphics and performance will be determined by each user. It remains to be seen if Windows Vista without Aero Glass is more efficient than Windows XP.

Average Microsoft Vista Hardware Requirements (Microsoft Recommends)

Processor: Dual-core CPU running at 4 to 6GHz

Memory: 2 GB to 4 GB (Double minimum is average)

Hard disk: Up to a terabyte

Networking: 1 Gbit, built-in, Ethernet-wired port and an 802.11g wireless link

Video: Graphics processor that runs three times faster than those on the market today (mid 2003)

(Foley, Mary Jo. "Longhorn to Steal Limelight at WinHEC." Microsoft Watch 30 Apr 2004)

Microsoft Windows Vista's hardware needs may be so high that many people will not be willing to make the investment for the upgrade. In 2004, Credit Suisse First Boston predicts "there is some risk that PC sales will slow down materially in calendar 2006 in front of Longhorn that we are now modeling as a 2007 event. We fear that heavy hardware requirements for Longhorn will discourage buying." ("Microsoft's Longhorn May Discourage PC Buying." Forbes 18 Aug 2004)

Windows XP 64-Bit Edition

The 64-bit version of Windows XP has a minimum requirement of 1 GB RAM. Microsoft® usually recommends double the minimum, although for now there's no recommended amount. From past experience, having twice of what Microsoft recommends is necessary for typical use. Therefore 4 GB of RAM may be necessary to properly run WinXP 64-Bit Edition.

Linux Hardware Requirements

Typical minimum requirements for a Linux distribution:

Processor: Intel: Pentium 1-4 or Xeon; AMD: Duron, Athlon, Athlon XP, Athlon MP, Athlon 64, Sempron or Opteron

256 MB of RAM (512 MB recommended)

500 MB of disk space (800 MB to 2 GB often required when including a basic set of applications)

Linksys WML11B wireless network audio player & speakers

Linksys WML11B wireless network audio player allows you to stream music from your pc to any room through WiFi tracks can be4 changed using the bundled remote initial configuration through wired lan (ethernet) Included 2 speakers(though you can connect your own music system) Supports 802.11b wlan protocol included adapter,audio cable,lan cable & 2 speakers Specifications:- Model WML11B, WMLS11B Standards IEEE 802.11b, 802.3, 802.3u Ports LAN, Audio Out (L, R, Digital), Power, Speaker DC Buttons Play/Pause, Stop, Up, Down, Left, Right, Power, Parallel/Crossover, Reset Cabling Type CAT 5 Ethernet, SPDIF Optical, RCA LEDs Power, Link Transmit Power 22 dBm UPnP able/cert able Security Features WEP WEP Key Bits 64-Bit, 128-Bit Dimensions WML11B: 6.06" x 3.39" x 8.5" (154 mm x 86 mm x 216 mm) (W x H x D) WMLS11B: 16.02" x 3.39" x 8.5" (407 mm x 86 mm x 216 mm) Unit Weight WML11B: 1 lb. and 6.5 oz. (0.64 kg) WMLS11B: 3 lbs. and 2.7 oz. (1.44 kg) Power 12 V, 1.5 A Certifications FCC, IC-03 Operating Temp. 0ºC to 40ºC (32ºF to 104ºF) Storage Temp. -20ºC to 70ºC (-4ºF to 158ºF) Operating Humidity 10% to 85%, Non-Condensing Storage Humidity 5% to 90%, Non-Condensing

USB 2.0 4x Channel DVR System with 1 Channel of Audio

USB 2.0 4x Channel DVR System
with 1 Channel of Audio

  Model No: BR286

BR286 is a computer based cost effective video surveillance system for home/office/shop/warehouse/malls/baby care purposes. Users can do their own security by easy installation. It is much cheaper than using commercial standalone DVRs because it uses your PC as the controlling station. This gives you much more control over its features and configurations that are not possible even with those expensive DVRs. This solution helps you to save the video recordings in digital formats and to manage the recorded data via index of date and time. 

In short, it makes your life safer and easier at just a fraction of the cost !!

Features:

1. 4 channels video input in one card, the maximum display/recording rate is 25 fps under PAL format, and 30 fps under NTSC format
2. 4 screen display modes are available
3. Multi alarm triggering method: sensor, motion, video loss, and HDD space shortage
4. Support schedule recording mode, recycling recording method available
5. MPEG-4 video compression format. 5 level recording quality options available, and the recording frame rate range from 1 to 30 fps adjustable for each channel
6. Support multi-channel playback, searching by time/date and recording events, images can be Zoom/capture/save/print/backup
7.Dimension: 89 x 27 x 15cm (approx.) Weight: 67g

Specification: 
1. Send e-mails attachment with image.
2. Save image on Hard Disk.
3. Sound alarm.
4. Video signal filter, for filtrate Active and Invalid channel.
5. Signal lost alarm.
6. Motion Detection.
7. Adjustable sensitivity.
8. Automatically lock, while not any operate.
9. Schedule Monitoring sessions, for timer snap.
10. Record video/audio(with usb2.0 audio interface), snap shot.
11. Automatic Space Management. Stop recorder or capture still automatically on disk full.
12. Support 4 Channel Video input on one computer. One channel audio
13. Support On Screen Display. Display's date and time, or channel description on video.
14. Supports manual open/close Invalid channel, or add/delete channel description.
15. Supports login and logout, by User Name and Password.
16. Supports running background stealthy.

System requirements:

Windows 2000/XP/Vista, Intel P4 CPU, 1700MHZ
HDD: 80G, RAM: 256M memory
Microsoft Direct X 9.0C
Free USB 2.0 port and Audio Card

Package contents:

USB EasyCap 4 Channel DVR
USB cable
Quick install guide
Software CD (Drive & Application)

Wi-Fi

Wi-Fi

The name of a popular wireless networking technology that uses radio waves to provide wireless high-speed Internet and network connections. The Wi-Fi Alliance, the organization that owns the Wi-Fi (registered trademark) term specifically defines Wi-Fi as any "wireless local area network (WLAN) products that are based on the Institute of Electrical and Electronics Engineers' (IEEE) 802.11 standards."

Initially, Wi-Fi was used in place of only the 2.4GHz 802.11b standard, however the Wi-Fi Alliance has expanded the generic use of the Wi-Fi term to include any type of network or WLAN product based on any of the 802.11 standards, including 802.11b, 802.11a, dual-band, and so on, in an attempt to stop confusion about wireless LAN interoperability.

Wi-Fi works with no physical wired connection between sender and receiver by using radio frequency (RF) technology, a frequency within the electromagnetic spectrum associated with radio wave propagation. When an RF current is supplied to an antenna, an electromagnetic field is created that then is able to propagate through space. The cornerstone of any wireless network is an access point (AP). The primary job of an access point is to broadcast a wireless signal  that computers can detect and "tune" into. In order to connect to an access point and join a wireless network, computers and devices must be equipped with wireless network adapters.

Wi-Fi  is supported by many applications and devices including video game consoles, home networks, PDAs, mobile phones, major operating systems, and other types of consumer electronics.  Any products that are tested and approved as "Wi-Fi Certified" (a registered trademark) by the Wi-Fi Alliance are certified as interoperable with each other, even if they are from different manufacturers. For example, a user with a Wi-Fi Certified product can use any brand of access point with any other brand of client hardware that also is also "Wi-Fi Certified". Products that pass this certification are required to carry an identifying seal on their packaging that states "Wi-Fi Certified" and indicates the radio frequency band used (2.5GHz for 802.11b,  802.11g, or 802.11n, and 5GHz for 802.11a).

A common misconception is that the term Wi-Fi is short for "wireless fidelity," however this is not the case. Wi-Fi is simply a trademarked term meaning IEEE 802.11x.

Distributed File System (DFS

Distributed File System (DFS) is a set of client and server services that allow an organization using Microsoft Windows servers to organize many distributed SMB file shares into a distributed file system. DFS provides location transparency and redundancy to improve data availability in the face of failure or heavy load by allowing shares in multiple different locations to be logically grouped under one folder, or DFS root.

Microsoft's DFS is referred to interchangeably as 'DFS' and 'Dfs' by Microsoft and is unrelated to the DCE Distributed File System, which held the 'DFS' trademark but was discontinued in 2005.

It is also called "MS-DFS" or "MSDFS" in some contexts, e.g. in the Samba user space project.

There is no requirement to use the two components of DFS together; it is perfectly possible to use the logical namespace component without using DFS file replication, and it is perfectly possible to use file replication between servers without combining them into one namespace.

A DFS root can only exist on a server version of Windows (from Windows NT 4.0 and up) and OpenSolaris (in kernel space) or a computer running Samba (in user space.) The Enterprise and Data center Editions of Windows Server can host multiple DFS roots on the same server. OpenSolaris intends on supporting multiple DFS roots in "a future project based on Active Directory (AD) domain-based DFS namespaces".