Networking: A Beginner’s Guide Fifth Edition- P87 ppsx

... remediate an error that makes the system unavailable to users. c) Direct database change: A programmatic change to the data within the ac- counting system database. Direct database changes bypass ... completed change request forms and making them available as appropriate to auditors. 4) DEFINITIONS a) Program change: A change in a program that makes up the system. Program changes c...

Ngày tải lên: 05/07/2014, 04:20

... the backup switch. In contrast, a larger unit can switch to redundant features automatically. As always, consider such trade-offs carefully for your particular company and its needs. 69 Chapter ... build a network using smaller 24-port switches. You can simply purchase an extra 24-port unit as a hot-swap backup (a backup unit that can be quickly swapped in to take the place of a...

Ngày tải lên: 05/07/2014, 04:20

... 79 Chapter 7: Making WAN Connections Analyzing Requirements A company’s first WAN is usually driven by a particular application, such as an accounting system. Then once the WAN is operational, ... cloud. Packet-switched networks can be more reliable because the data can take many different paths, but you are not guaranteed that each packet will arrive in 77 Chapter 7 Making WAN Connect...

Ngày tải lên: 05/07/2014, 04:20

... either a Class A or a Class B address, and then can handle a number of Class C addresses within its own address structure. Changing ISPs, even for a company that has a valid Class C address, means ... changing the company’s address from a Class C address available through the first ISP to a Class C address available from the new ISP. As mentioned earlier, the addresses 0,...

Ngày tải lên: 05/07/2014, 04:20

... of LDAP is that an organization can build a global directory structure using a feature called referral, where LDAP directory queries that are managed by a different LDAP server are transparently ... template for the directory and its entries. Classes are categories to which all entries are attached. Attributes are items of data that describe the classes, such as CN and OU. The synta...

Ngày tải lên: 05/07/2014, 04:20

... to an SSL VPN, they are shown a home page that displays all of the connection options available to them, such as the example shown in Figure 10-8. The choices available to a remote user may ... that are managed might be hosted on Windows- or UNIX-based servers N Access to shared corporate applications that have been set up to work through the SSL VPN, such as an accounting system N Ac...

Ngày tải lên: 05/07/2014, 04:20

... number assigned to the domain and then a sequential number assigned to each created account (with billions of unique user-specific numbers available). If you have a user called Frank, delete that ... “unique across space and time.” This means that no two users will ever have the same SID, even if they have the same user name and even the same password. This is because the SID is made...

Ngày tải lên: 05/07/2014, 04:20

... Figure 18-7. Finally, ready to install Exchange Server 282 Networking: A Beginner’s Guide shown in Figure 18-4, if you choose No here, you can always add a public folder database to Exchange Server ... them all, but it is fundamentally a straightforward process. After you have installed all of the required components in order for the Exchange Server Setup program to proceed,...

Ngày tải lên: 05/07/2014, 04:20

... some applications work far more effectively using a remote control approach rather than a remote node approach (these approaches are explained in Chapter 10). Most remote access connections are ... application running on the terminal server can run much faster than it could over a remote node connection. N Demanding applications Some applications and tasks, such as administration of...

Ngày tải lên: 05/07/2014, 04:20

... and can accept data from a device (such as a tape or floppy drive). When dd accesses a device, it does not assume anything about the file system and instead pulls the data in a raw format. Thus, ... confused. -name name Specify that the filename should be name. You can use regular expressions here. Table 21-5. Common find Command Options 342 Networking: A Beginner’s Guide F...

Ngày tải lên: 05/07/2014, 04:20