ExamSim For MCSE 2000:Question 3 - Missing Browse List Entries Page 3
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Answer A is incorrect because a firewall or packet filtering router that blocks outgoing broadcast packets on UDP Port 138 will have no effect on the Browser service. Master Browsers configured as WINS clients contact the Domain Master Browser via a directed datagram. Therefore, the blocking of broadcast messages by an intervening router or firewall will not prevent the segment Master Browser from communicating with the Domain Master Browser. Another important consideration is that no other client on the missing Server's segment is having problems showing up on the Browse List. If there were communication problems between the segment Master Browser and the Domain Master Browser, the problem would affect all computers on the segment.
Answer Bis correct because when you disable NetBIOS over TCP/IP on a Windows 2000 computer, you also disable the network clients ability to send server announcements, which are dependent on the NetBIOS interface. A network client that has the NetBIOS interface disabled is still able to access network shares on a Windows 2000 network by using the Direct Access method. In this instance, the server has had its NetBIOS interface disabled, and therefore will not show up in the browse list. This is the preferred mode in Windows 2000 networks that do not have NetBIOS dependent applications. This file server is still able to provide shared network resources, but rather than having users navigate a long browse list, you can publish the shared network resources on this server to the Active Directory. Users can then more efficiently search the Active Directory for the resources they require.
Answer Cis incorrect because an erroneous record on the WINS Server will not prevent this file Server from showing up on the Browse List. Remember, a computer name shows up on the Browse List via server broadcast announcements on the local subnet. These announcements are in no way dependent on NetBIOS name resolution or WINS. They are broadcast messages to the local segment, and only the computer name is included on the browse list; the IP address of the server making an announcement is not included. Therefore, as long as the segment Master Browser is able to communicate with the Domain Master Browser, the computer's name will show up on the Browse List. However, if this computer does have a static mapping on the WINS Server, and the IP address is incorrect, then when a user tries to connect to the machine who's name is on the browse list, it will not be able to do so, because NetBIOS name resolution will fail.
Answer Dis incorrect because the NetBIOS node type will not have any effect on the browser service. The m-node client will preferentially use NetBIOS broadcasts for name resolution before using a WINS Server. However, this will not have any effect on its ability to issue server announcements on the local segment.
Answer Eis incorrect because its does not matter if the missing Server is configured to use a WINS Server, or is even if it is configured with an incorrect IP address for a WINS Server. The only machines that might require the use of a WINS Server are the segment Master Browsers (and an LMHOSTS file could be used instead if you wished). This is a very common misunderstanding that administrators have about the Browser service. Remember, servers do NOT need to be configured to use a WINS Server in order for the name to show up on the Browse List. However, a WINS Server may be an issue when it comes time to resolve the name on the list.
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