What should the administrator implement on the network

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Save Table of contents. Microsoft Certified: Azure Administrator Associate The content of this certification was updated on September 24, Please download the skills measured document on the Exam AZ page to see what changed.

Certification details Take one exam. Manage Azure identities and governance Implement and manage storage Deploy and manage Azure compute resources Configure and manage virtual networking Monitor and back up Azure resources. Two ways to prepare Online - Free. Instructor-led - Paid. Hide completed. Instructor-led courses to gain the skills needed to become certified. Both of these VPNs offer the same protection from outside eavesdropping on the communication channel they protect, the difference is in why they are set up.

NAT-One of the most basic security functions provided by a firewall is NAT, which allows you to mask significant amounts of information from outside of the network. This allows an outside entity to communicate with an entity inside the firewall without truly knowing its address. This site uses Akismet to reduce spam. Learn how your comment data is processed. The header contains the addresses of the recipient and the sender, plus information on how to handle the packet as it travels through each layer of the protocol suite.

The message part of the packet corresponds to the letter itself. Packets can only contain a finite number of bytes of data, depending on the network media in use. Therefore, typical communications such as email messages are sometimes split into packet fragments.

If you are an experienced Solaris user, you are no doubt familiar with the term "host," a word often used as a synonym for "computer" or "machine.

A router is a machine that forwards packets from one network to another. To do this, the router must have at least two network interfaces. A machine with only one network interface cannot forward packets; it is considered a host. Most of the machines you set up on a network will be hosts. It is possible for a machine to have more than one network interface but not function as a router.

This type of machine is called a multihomed host. A multihomed host is directly connected to multiple networks through its network interfaces. However, it does not route packets from one network to another. When a host initiates communication, it is called a sending host, or the sender.

For example, a host initiates communications when its user types rlogin or sends an email message to another user. The host that is the target of the communication is called the receiving host, or recipient.

For example, the remote host specified as the argument to rlogin is the recipient of the request to log in. Each host has three characteristics that help identify it to its peers on the network. These characteristics include:. The host name is the name of the local machine, combined with the name of your organization. Many organizations let users choose the host names for their machines.

Programs such as sendmail and rlogin use host names to specify remote machines on a network. System Administration Guide, Volume 1 contains more information about host names. The host name of the machine also becomes the name of the primary network interface. This concept becomes important when you set up the network databases or configure routers. When setting up a network, you must obtain the host names of all machines to be involved.

You will use this information when setting up network databases, as described in "Naming Entities on Your Network". This address also gives peer hosts a notion of where a particular host is located on the network. If you have installed the Solaris operating environment on a machine on a network, you might recall specifying the IP address during the installation process. Each host on a network has a unique hardware address, which also identifies it to its peers. This address is physically assigned to the machine's CPU or network interface by the manufacturer.

Each hardware address is unique. This book uses the term Ethernet address to correspond to the hardware address. Because Ethernet is the most commonly used network media on Solaris-based networks, the text assumes that the hardware address of your Solaris host is an Ethernet address. If you are using other network media, such as FDDI, refer to the documentation that came with your media for hardware addressing information.

As your network continues to function successfully, users might need to access information available from other companies, institutes of higher learning, and other organizations not on your LAN. To obtain this information, they might need to communicate over a wide-area network WAN , a network that covers a potentially vast geographic area and uses network media such as leased data or telephone lines, X. Other examples of WANs are enterprise networks , linking the separate offices of a single corporation into one network spanning an entire country, or perhaps an entire continent.

It is entirely possible for your organization to construct its own WAN. As network administrator, you might have to provide access to WANs to the users on your local net. Information about directly connecting to the Internet is outside the scope of this book. You can find many helpful books on this subject in a computer bookstore. You must make sure your network is protected from unauthorized use, and control access to data and resources. An overview of security issues is provided in the System Administration Guide, Volume 1.

You can also become informed by subscribing to majordomo greatcircle. This support is designed to improve performance over large bandwidth or delay networks such as ATM or satellite networks by using windows that exceed the normal limit. This support expands the amount of data that can be outstanding in a TCP session from 65, bytes to approximately 1 Gigabyte.

TCP large window supports a number of TCP configuration parameters that allow a system administrator to enable the use of enhanced send and receive window sizes and the RFC timestamp option, without having to modify the applications.