asp net qr code library Maintaining a Network Infrastructure in .NET

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Maintaining a Network Infrastructure
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Objective 5.1
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Monitor Network Traffic
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For this objective, you need to know how to use key tools such as Network Monitor, System Monitor, Performance Logs And Alerts, and Event Viewer. The version of Network Monitor that is provided on the Windows Server 2003 installa tion CD-ROM can be used to view only the network traffic that is sent to or from the computer on which it is installed. To view network traffic that is sent to or from another computer and that is routed through your computer, you need to use the Network Mon itor component that is provided with Microsoft Systems Management Server (SMS). Network Monitor captures and displays network packets at byte-level. This is often too much information, and view and capture filters can be configured so that you can either view only the traffic that you are interested in, or capture only that traffic. You can create a view filter by specifying source or destination IP address, or protocol. Capture filters can be triggered by a pattern match, for example, so that you can specify when the capture starts. The examination requires that you know how to install, configure, and use Network Monitor, and also know how it complements other troubleshooting tools such as Sys tem Monitor and Event Viewer. System Monitor lets you view the values returned by the counters for various system objects. In this objective, you are mostly concerned with the Network Interface object, but valuable information can also be gathered by adding Protocol_layer_object counters. These exist for the TCPv4 and TCPv6 objects. It is unlikely that the TCPv6 objects will form part of the exam. Counters of particular interest include the following:
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Network Interface: Bytes Total/sec Network Interface: Bytes Sent/sec Network Interface: Bytes Received/sec Protocol_layer_object: Segments Received/sec Protocol_layer_object: Segments Sent/sec Protocol_layer_object: Frames Sent/sec Protocol_layer_object: Frames Received/sec
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Objective 5.1: Monitor Network Traffic
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17-5
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You need to know what these counters indicate and what their acceptable value ranges are. You need to know how to generate a baseline log and compare this with current performance. The Protocol_layer_object counters are found in the TCPv4 and TCPv6 objects. As stated previously, it is unlikely that the TCPv6 objects will form part of the exam.
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17-6
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Maintaining a Network Infrastructure (5.0)
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Objective 5.1 Questions 1.
You are configuring a router-to-router virtual private network (VPN) connection on a router running Windows Server 2003 in your domain. You decide to install Network Monitor tools from the Windows Server 2003 CD-ROM to monitor the traffic on the VPN connection. The installation does not complete, but stops with the message shown below.
What is the problem
A. Network Monitor tools must be installed by running Suptools.msi from the \Sup-
port\Tools folder on the Windows Server 2003 CD-ROM.
B. You have failed to close a dialog box in the Routing And Remote Access snap-in. C. You cannot install Network Monitor tools on a VPN server. It must be installed on
a domain controller.
D. You need to install Network Monitor tools on each network interface as a protocol.
You are using Network Monitor on a Windows Server 2003 domain controller named Dom1. You have performed a capture of all inbound and outbound traffic at Dom1_fs local area network (LAN) interface. You want to view all Address Resolution Protocol (ARP) frames that Dom1 has sent to, and received from, a client running Microsoft Windows XP Professional named Client26. How do you specify your display filter
Objective 5.1: Monitor Network Traffic
17-7
A. AND
Protocol==ARP Dom1(IP) Client26(IP)
B. AND
Protocol==ARP_RARP Dom1(IP) ANY
C. AND
Protocol==IP Dom1(IP) ANY
D. AND
Protocol==ARP_RARP Dom1(IP) Client26(IP)
You are having a problem with excessive network traffic. You install Network Monitor on the server that seems most affected, a file server running Windows Server 2003. You want to obtain the source IP address, the destination IP address, and the destination port number of every inbound and outbound TCP/IP frame. You want to log the infor mation for a period of six hours. What do you do
A. On the Capture Buffers Settings menu, increase the frame size. B. On the Capture Buffers Settings menu, increase the buffer size. C. On the Capture Buffers Settings menu, decrease the frame size. D. On the Capture Buffers Settings menu, decrease the buffer size.
You administer a Windows Server 2003 Active Directory domain at Blue Yonder Airlines. The domain is on a single network segment and contains 120 clients running Microsoft Windows 2000 Professional and Windows XP Professional, and five servers running Windows Server 2003. Two of the servers are domain controllers, one is a router and NAT provider, one is a file and print server, and the fourth is an application server named App1. App1 runs a line-of-business booking registration client/server application. Users report long response times. You examine the client/server application and find that it is transmitting large amounts of data to one client on the network. The application cannot identify the client. You need to identify this client computer. What do you do
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