CompTIA Network+ Certification Study Guide part 40 ppt

... kinds of WAN protocols and proper-A: ties, how they differ and why is vital to answering the CompTIA Network+ exam question correctly. There will be plenty of questions on the exam that are ... to 640 Kbps. Is ISDN the same thing as dial-up?Q: Both use dialing, but dial-up is based on the telephone system and A: uses analog lines, whereas ISDN (and DSL) are both digital. For the Ne...

Ngày tải lên: 04/07/2014, 13:21

... to a friendly domain name such as microsoft.com. In 1984, DNS became part of ARPANet, and would eventually play a major part resolving domain names on the Internet. Also during the mid-1980s, ... company created by John Mauchly and J. Presper Eckert, which was developing a 1,500 square foot, 40- ton computer named UNIVersal Automatic Computer (UNIVAC). UNIVAC was the first computer t...

Ngày tải lên: 04/07/2014, 13:20

... pro- tocols to be used. Common protocols associated with VPN transmission security are PPTP, L2TP, SSH, and IPSec. PPTP and L2TP are used to establish a secure tunnel connection between two sites. ... traveling over.  Encapsulating Protocol The protocol, such as Point-to-Point Tun- neling Protocol (PPTP), Layer 2 Tunneling Protocol (L2TP), IPSec, or Secure Shell (SSH), that is wrapped ar...

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... thousands of dollars a month, and may be more than your organization needs. Before deciding on a particular con- nection for your network, try to determine what they will be using it for, how ... in a secure server room. You are the only network administrator CHAPTER 1: Network Fundamentals 40 in the organization and have sole responsibility of managing these resources and administrati...

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... more expensive than UTP. DAMAGE AND DEFENSE… Physical Security Physical security is an important part of any network. In terms of cabling, you should try to keep as much cabling as possible out ... can send a thousand times this amount. As we’ll see later in this chapter, the features of a particular type of cable can vary greatly. Because different types of cabling are available to use...

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...  tiplexing and supports ranges of 240 m and 300 m over MMF, or 10 km over single-mode fiber (SMF). 10GbaseLR that supports 10 km over SMF.  10GbaseER that supports 40 km over SMF.  10 Gigabit Ethernet ... installing several runs of cable at a time, you don’t want to be confused as to which cable runs to a particular computer or location. By labeling the cables, this confusion is rem...

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... networking, a number of devices either have taken over the roles of these devices or are a predominant part of a modern network envi- ronment. These devices are crucial to a network’s ability to handle ... correct computer on the network. For these computers to communicate, however, a device is needed to guide the TCP/IP network traffic to its destination. This is where routers come in...

Ngày tải lên: 04/07/2014, 13:21

... associated with VPN are Point-to-Point Tunnel- ing Protocol (PPTP), Layer 2 Tunneling Protocol (L2TP), SSH, and IP Secu- rity (IPSec). PPTP and L2TP are used to establish a secure tunnel connection ... the Inter- net) that the information is traveling over.  Encapsulating Protocol The protocol (PPTP, L2TP, IPSec., Secure Shell [SSH]) that is wrapped around the original data.  Passenger ....

Ngày tải lên: 04/07/2014, 13:21

... large number of active attacks that a hacker can launch against a wireless network. For the most part, these attacks are identical to the kinds of active attacks that are encountered on wired ... attack. Creating a hijacked AP DoS requires additional tools that can be found on many security sites. Many apartments and older office buildings are not prewired for the high- tech networks in us...

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... a Management Information Base (MIB) and con- tains a set of objects, each of which represents a particular type of network information such as an event, an error, or an active session. SNMP uses ... troubleshooting. Networking models can be very helpful to you. In this chapter, we cov- ered three of them in particular, the OSI model, the DoD model, and the Microsoft model, all of which are...

Ngày tải lên: 04/07/2014, 13:21