CompTIA Network+ Certification Study Guide part 58 ppsx

... However, you can run into connectivity issues if your network is using multiple frame types or if a particular machine has the incorrect frame type set. By default, NWLink will set the Ethernet frame ... Internet, they can’t communicate with another subnet, or maybe they’re only having trouble with a particular application. You also need to determine how widespread the failure is – if a...

Ngày tải lên: 04/07/2014, 13:21

... that transmits and receives electrical signals across the transmission media. They are also the part of the interface that actually connects to the media. Transceiver types can be classified as ... to keep interference out by protecting the wires inside from EMI caused by outside sources. RG -58 cabling or Thinnet is thin coaxial cable (about 1/4 inch thick)  used on 10Base2 networks....

Ngày tải lên: 04/07/2014, 13:21

... solutions. Some of these mechanisms are internal to Windows itself, while others are third-party solutions or part of the IEEE 802.11 standard. In this sec- tion, we will be focusing primarily on ... computer is outlined in Exercise 5.1. Summary of Exam Objectives 221 SITE SURVEYS A site survey is part of an audit done on wireless networks. Site surveys allow system and network admini...

Ngày tải lên: 04/07/2014, 13:21

... users who wanted to connect to a network had to obtain the TCP/IP protocol suite from a third party and install it. TCP/IP did not come bundled with the software. At times, the TCP/IP software ... routable because they include address- ing schemes that identify both the network or subnet and the particular client on that network or subnet. Other network/transport protocols, such as NetB...

Ngày tải lên: 04/07/2014, 13:21

... know about these technologies for the exam, so do not overlook studying for them. CHAPTER 6: The OSI Model and Networking Protocols 258 in terms of the limitations those solutions often imposed. ... interface was written, that main- frame still could communicate only with its specified counterpart. If either mainframe’s operating system changed, the interface might be broken and progra...

Ngày tải lên: 04/07/2014, 13:21

... whereas with NAT, each internal host must translate to a unique external IP address. PAT can be particularly useful for locations or users connected via cable modem, digital subscriber line (DSL), ... manage a network whether LAN or WAN. TCP/IP is a suite of protocols originally developed by the Department of Defense in a project called the Advanced Research Projects Agency (DARPA). The...

Ngày tải lên: 04/07/2014, 13:21

... targeting attacks and attack methodologies. This is perhaps the reason that CompTIA has been focusing many questions in this particular area. Although there are many different varieties and methods ... or guesses about replies, and informed attacks in which the attacker can monitor, and therefore partici- pate in, bidirectional communications. There are ways to combat spoofing, however. S...

Ngày tải lên: 04/07/2014, 13:21

... which resources are located in which areas of the organization. If an administrator followed a particular scheme of designing the hierarchy too closely, a hacker could determine its struc- ture ... she could then use this information to access objects contained in different OUs named after departments on the chart. Using naming conventions internal to the company (such as calling a Londo...

Ngày tải lên: 04/07/2014, 13:21

... installed on a particular machine. This information can be handy as a quick reference when trying to figure out what IP address and subnet mask has been assigned to a particular computer, particularly ... states:  Listening means that a particular port is open and waiting for con- nections, but no active connections have been made to it.  Established means that a particular connection i...

Ngày tải lên: 04/07/2014, 13:21

... Information Processing Systems: LAN Part2 : LLC. Provides changes and corrections to the 802.2 standard 802.2e Supplement to 802.2, Information Processing Systems: LAN Part2 : Bit Referencing 802.2f ... Mbps and 16 Mbps Token Ring LANs on unshielded twisted-pair 802.5p LAN: Part 2: LLC; End System Determination 802.5q LAN: Part 5: MAC Revision 802.5r Revision of IEEE Standard 802.5 f...

Ngày tải lên: 04/07/2014, 13:21