Disable DHCP and assign static addresses. Change the default SSID from the manufacturer name to a unique name that will be the same on every device and the WAP to ensure that spread spectrum parameters may be determined by devices on the entire network. Change the default SSID from the manufacturer name to a different unique name on every device and the WAP to ensure that spread spectrum parameters may be determined by devices on the entire network. Disable MAC address filtering.
SSID (Service set identifier) is used to identify the network name, and is used to determine Spread Spectrum parameters. It is fairly common for the manufacturer name to be the default SSID. Every device on the same BSS (Network) requires the same SSID. Every device on the network along with the WAP (Wireless Access Point) requires the same SSID. When a node connects to a central device (Bridge) the wireless bridge is referred to as a Wireless Access Point (WAP). In an 802.11b network, or more commonly referred to as the Basic Service Set (BSS), a wireless access point (AP) acts as a bridge for the associated stations (PCs that are outfitted with wireless NICs). Security for wireless LANs are defined by the Wired Equivalency Protocol(WEP) standard. WEP was designed to provide confidentiality for 802.11 networks, similar to that of wired networks.
From a command prompt use the Ping localhost command. From a command prompt use the Ping local host command. From a command prompt Ping the default gateway. From a command prompt Ping the far side of the router. None of the above.
Ping localhost (one word) may be used to identify if TCP is bound to the NIC card. The command would look as follows once it is typed in (and the enter key was pressed), (DOS is not case sensitive): C:\>ping localhost Pinging administ-h7tjpd [127.0.0.1] with 32 bytes of data:
The Pentium Pro inserts into a 242 pin slot. The Pentium Pro inserts into a 242 pin slot. Pentium Pro inserts into a 387 pin socket in a socket 8. The Pentium Pro inserts into a 387 pin socket in a socket 7.
When EMI from an adjoining wire is the cause of data transfer disruption, it is referred to as jitter. Interference from a radio tower (Commercial radio station) that causes disruption in data flow is re-ferred to as crosstalk. The term attenuation refers to data loss due to electromagnetic interference from adjoining wires. Crosstalk is the term that best describes interference from an adjoining data wire.
The lines of magnetic flux in the magnetic field are measured in ‘Gauss’. When the lines of flux from one field cross with the lines of another magnetic field during the process of data transfer, it is referred to as crosstalk. If you have ever put two monitors close together, you will see the magnetic interference from one to the other. The de-gauss button on the monitor is used to neutralize these lines of magnetic flux, and re-stabilize the picture on the monitor. Press the degauss button on a monitor and watch what happens. Jitter is a term that describes the amount data packets to arrive at the destination over a network. Some jit-ter would be acceptable with data packets but not with audio or video. RFI (Radio frequency interference) may be caused by radio waves, or even having network cabling cross fluorescent lights. Attenuation is the degradation of a signal over a given distance along a data line.
I/O Address IP Address MAC address Protocol IRQ
Often times with the older legacy NIC cards they were configured with software which was provided by the manufacture. They offer the ability to change the I/O address, and the IRQ, as well as DMA channel, although DMA is not used. The software on the NIC also offered the ability to troubleshoot the NIC card. The IP address is a layer 3 address and is either assigned through a DHCP server, self assigned through APIPA, (Automatic Private IP Addressing), or assigned statically by the technician. The protocol is assigned by the operating system.
TFTP TCP/IP SNMP SMTP
When the network is operational and in good health a baseline is created. The network may then be continuously monitored by SNMP. If any abnormalities are present then SNMP sends an alarm to the administrator, which is referred to as a trap. This notification may be an alert mes-sage on the administrators PC, or may even go as far as paging him/her or even calling them. This all de-pends on which SNMP package is used. SNMP is used to monitor the health of the network on port 161. SMTP (Simple mail transfer protocol) and is used to send email, and uses port 25. TFTP (Trivial file transfer protocol) is used to copy or move small files to and from a TFTP server, and uses UDP (User datagram protocol) as the transport method, while using port 69. TCP/IP is a suite of protocols.
Winipcfg Netstat Ipconfig Ping
The ipconfig command is used with NT. The Netstat command is used to see TCP connections. You may also see the UDP connections if you use the Netstat -a command. The Ping command (packet internet groper) command is used to check connectivity with a host.
ISDN PRI has 24 B channels and 1 B channel with each channel capable of 64Kbps. ISDN PRI has 23 B channels capable of 64Kbps and 1 B channel capable of 16Kbps. ISDN PRI has 24 B channels and 1 B channel with each channel capable of 16Kbps. ISDN PRI has 23 B channels capable of 64Kbps and 1 D channel capable of 64Kbps.
ISDN PRI is referenced as 23B+1D channel, all channels are rated at 64Kbps which offers a data transfer rate of 1.544 Mbps. (T1 Line) 128 Kbps would be the equivalent of ISDN BRI. @B channels and 1D channel. 256 Kbps would be possible if you multi-linked 2 ISDN modems with BRI service. I do not know why anyone would do this though!
A minimum of 2 hard disks and 2 controllers. A minimum of 2 hard disks and 1 controller. A minimum of 3 hard disks with 1 controller. A minimum of 3 disks and 2 controllers.
RAID 0 (Redundant array of inexpensive disks) uses a minimum of 2 hard drives, and 1 controller. It offers excellent read/write performance but does not offer any fault tolerance. It is not uncommon to find this built into many motherboards today at an average cost of approximately $130. Only RAID 1 (duplexing) is required to have 2 controllers and a minimum of 2 drives. Raid 1 (Mirroring) only requires 1 controller and a minimum of 2 drives. RAID 5 requires 1 controller and a minimum of 3 drives with a maximum of 32 drives. None of the RAID levels require 3 disks and 2 controllers.
ROM BIOS Ram Drives Hard drives Application programs
ROM BIOS cannot get infected by a virus since it is ‘read only memory’, just like a CD-ROM, but Ram, Hard drives and application programs may all get infected by viruses.
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