... game players. These large networks are known as wide areanetworks, or WANs. The Internet is an example of a very large WAN.What Your Modem (Modulator/Demodulator) DoesCommunication with a ... dial-up modems to provide Internet access.What the Router (Gateway) DoesMost network designs use a concentrator to allow the connection of devices at a centralpoint. A concentrator can be any ... technology.802.1 1a Capable of operating at a data rate of 54 Mbps, 802.1 1a uses a federallyregulated radio frequency in the 5 GHz band and therefore is more expensive andnot as widely used. Using a different...
... This can be a largeplant, a closet of wet coats, a laundry basket, even your family members. Afterall, we are just large bags of water as far as radio waves are concerned!Commercial installers ... some alternatives to Category 5 cable.Select Your Installation ToolsCable installation tools fall into two broad categories: tools for installing cable inwalls, floors, and ceilings; and tools ... until all yourdevices are addressed.Use Static AddressesIf you are not using an Internet gateway device that includes the ability to dynamically assign addresses, that is to automatically give...
... Range with AntennasAntennas are available for many wireless Ethernet devices to increase effectiverange, sometimes dramatically. Antennas are available in two basic types:omnidirectional antennas ... a good start.Ill 4-8Disabling SSID broadcast in your access points and gateways can makeearlier versions of WindowsXPwireless auto-configuration malfunction.If you experience this, obtain ... worms.Trojan HorsesMore an attack method than a type of malware, Trojan horses use the classic methodemployed by the Achaeans under Odysseus to defeat ancient Troy. Masqueradingas links to helpful...
... in unusual circumstances—say, you want to transfer a lot of files from one laptop to another, and you’re nowherenear your wireless network—keep that laptop talking to the gateway.Always Turn ... certainparts of itself operating. Some programs can even be made to fail in such a way as to leave the attacker at the operating system’s command line (a system interfacewhere administrators ... IP address to move data to the rightplace. But unlike IP addresses, MAC addresses are permanently set at the factoryand cannot be changed. As a result, the MAC address on your wireless card...
... software can range from a program that suppresses all pop-ups to more sophisticated applications that allow certain pop-ups that you can classify as“safe” or “allowed.” Some examples of free ad-blockers ... spontaneously,update your antivirus signature files and start a manual scan. It takes only about20 minutes and could stop a virus before it does real damage.FIGURE 8-5Creating a scheduled virus scanPlease ... configurations. When an updateis available, you will receive notification via a small pop-up message from theAutomatic Updates service. You may choose to install the update immediately orwait...
... done.Install and Run Sunbelt Software’s iHateSpamThe iHateSpam program (also known as Giant Company Spam Inspector) is a sophisticated spam filter application. Like SpamNet, iHateSpam also networkswith ... growing at an almostexponential rate. More automated attacks using worms or viruses take advantageof the “click first, ask questions later” reflex most people have, and spread rapidlythrough swaths ... or grammar. We may not have androids to cater to our every whim today, but the creation of ever more advanced spamfilters may help bring that day a little closer to reality.Please purchase PDF...
... some cases, chat has been involved,but chat is not the bad guy some parents think it is.“We always say we don’t want kids to talk to strangers in real life,” Aftabsays. “When you apply that to ... against a scam artist posing as an online book agent and was later tracked to her home by the scammer, who was arrested outside her house with a machete and a roll of duct tape. What’s most important ... place you shouldlook. Can the other person explain away negative feedback satisfactorily? Does theperson exhibit any negative behavior patterns, according to the people who gavefeedback?Auction...
... MP3,WMA, and WAV audio formats; MPEG-1, -2, and-4, AVI, and QuickTime video formats; and mostcommon graphic file formats. It will also playstreaming media broadcasts from RadioAOL.It includes a ... tougher -to- crackversion of the same password.Even if you have a good memory, it’s wise to store the passwords you come up with in a passwordmanager application, just in case.Hardware Devices CanBe Password ... able to readyour passwords, even if they were to steal the file inwhich Mozilla stores them.Password Manager SoftwareEases the PainUsing your browser to manage passwords helps youonly to...
... Create a SQL SELECT statement referencing a worksheet or a range in an Excel workbook and execute the statement to fill a DataSet using a DataAdapter or to create a DataReader. For example: ... INSERT INTO [MySheet$] (Field1, Field2, Field3) VALUES ('testdata', 1.234, '09/28/1979'); Retrieve data Use either a DataAdapter or a DataReader to retrieve data from an Excel ... 1-2. Example 1-2. File: ExcelForm.cs // Namespaces, Variables, and Constants using System; using System.Configuration; using System.Data; private OleDbDataAdapter da; private DataTable...
... ConfigurationSettings.AppSettings["Sql_Msde_ConnectString"]); Manager and Query Analyzer are also shared. The System.Data.SqlClient class cannot automatically discover the port number of a named instance of SQL Server listening on a port other than ... need to understand what a SQL Server or MSDE named instance is and how to connect to one. The sample code contains a single event handler: Connect Button.Click Creates and opens a connection to ... [ Team LiB ] Recipe 1.7 Connectingtoa Named Instance of SQL Server or Microsoft Data Engine (MSDE) Problem You want to connect toa named instance of a SQL Server or Microsoft Data Engine...
... result.ToString( ); } Discussion A Microsoft Access database password requires that users enter a password to obtain access to the database and database objects. This is also known as share-level ... those defined by ADO.NET. To open a database secured by a Microsoft Access database password, use the Jet OLEDB:Database Password attribute in the connection string to specify the password. This ... security. A password does not allow groups or users to have distinct levels of access or permissions. Anyone with the password has unrestricted access to the database. The Set Database command from...
... Team LiB ] [ Team LiB ] Recipe 1.4 Connectingtoa Secured Access Database Problem You want to connect toa Microsoft Access database that has been secured with user-level security and ... database. The sample code contains a single event handler: Connect Button.Click Creates and opens a connection toa Microsoft Access database secured with user-level security and a workgroup ... defined by ADO.NET. To open a database secured by Microsoft Access user-level security, use the Jet OLEDB:System Database attribute in the connection string to specify the path and filename of...
... provider can read records from and insert records into a text file data source. The Jet database engine can access other database file formats through Indexed Sequential Access Method (ISAM) drivers ... data adapter to retrieve all rows from text file. The MaxScanRows option indicates how many rows should be scanned to automatically determine column type. A value of 0 indicates that all rows ... provider to access data in a text file. The sample code creates an OleDbDataAdapter that uses the Jet OLE DB provider to load the contents of the text file Categories.txt, shown in Example 1-13,...
... vấn đề về firewall, antivirus hoặc anti-malware; trang thuộc tính c a ổ đ a hệ thống để dồn ổ và kiểm tra đ a; trang thuộc tính c a hệ thống để chạy System Restore;… Trong Windows 7, người ... dụng Device Manager, thư mục Printers and Faxes, applet Scanners and Cameras và applet Mouse,… Windows 7 tập trung sự quản lý thiết bị bằng thư mục Devices and Printers mới c a nó (xem trong ... phiên bản Professional và Ultimate, người dùng cũng có thể backup đến các thư mục chia sẻ trên mạng. Windows 7 giữ dữ liệu c a bạn được an to n và bảo vệ sự an to n c a nó bằng backup được lên...
... interface Background / Preparation This lab will focus on the ability to connect a PC toarouter or a switch in order to establish a console session and observe the user interface. A console ... terminal is a DB-25, an RJ-45 to DB-25 adapter will be needed. Both of these adapters typically come with a Cisco router or switch. Step 4 Locate or build a rollover cable Use a rollover ... Step 3 Locate the RJ-45 to DB-9 adapter One side of the adapter connects to the PCs serial interface and the other to the RJ-45 rollover cable connector. If the serial interface on the PC...