6. The BIOS will, based on configuration, attempt to read and load into local registers as well as physical memory the boot loader section of a boot device, such as a hard disk, floppy, or bootable optical media in many of today’s devices. Some of today’s newer systems will also provide boot capability from devices such as USB (Universal Serial [ Read More ]
WLANs, especially unsecured WLANs, can introduce the possibility of challenges to data authenticity and the “some hacker did it” defense. These challenges are not always unfounded. It is common for a hacker to compromise a server to provide public access to stolen software, referred to as “WAREZ,” and pornography.
Wireless networks were originally thought to be best suited for isolated situations in which users needed temporary and backup connectionsor to extend networks and provide people on the move such as doctors and nurses with connectivity.
Twisted-pair is generally good only for a maximum segment length of 100 meters (328 feet). Sometimes investigators will hear twisted-pair referred to by its EIA/TIA rating, such as CAT 5 for category 5.
Each networking topology can use different types of cabling. Although other factors can contribute to the selection, the type of cabling utilized in a given topology is usually based on the required communications speed and range between stations. Bus topologies use coaxial cable, commonly referred to as thinnet or thicknet.
A star topology is one of the most common topologies in use today. In a star topology, rather than all computers being connected to each other, all computers and network devices, such as network printers and firewalls, are connected to a centralized hub or switch.
The basic concepts in use on a bus topology call for communications to flow in the following manner: When a computer or network device wants to send data, it first listens to make sure no other information is “on the wire.”
WLANs, especially unsecured WLANs, can introduce the possibility of challenges ...