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31 Cards in this Set
- Front
- Back
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What does the acronym NIS stand for?
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Network Information Service. (Sun Microsystems’ client-server directory service protocol)
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The Network Information Service (NIS) is what type of system?
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Distributed database system
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How does NIS serve clients?
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NIS stores configuration files that enable access to a network from any network client.
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How does NIS help System Administrators?
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NIS enables administrators to update users, user passwords, and groups at a single, central location.
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What was the original name of NIS?
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Yellow Pages
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What are RPC's?
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Remote Procedure Calls
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Use of RPC's requires what service to be running?
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Portmapper
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This removes the need to create which accounts on individual computers?
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The local user ID (UID) and group ID (GID) accounts.
(The bin and root accounts are still needed) |
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What are the three components of NIS?
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NIS servers
NIS slaves NIS clients |
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What is the main function of a NIS server?
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NIS servers create and maintain NIS databases
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When they update and modify NIS databases, Administrators can perform what distributed functions?
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Updated NIS domain information databases can then be copied to the NIS slaves
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NIS server services included are (6 items)...
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ypserv, ypinit, yppasswdd, yppush, ypxfr, and netgroup
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What function do NIS slaves perform?
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NIS slaves store copies of the NIS databases and provide information to NIS clients
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How do NIS slaves help the NIS server?
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The slaves reduce the processing load on NIS servers by processing NIS requests
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How does the NIS client interact?
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NIS clients request information from NIS servers
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NIS client commands are...
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NIS client commands are ypbind, ypcat, ypmatch, yppasswd, ypset, and ypwhich.
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Administrators may use a NIS domain of what other domain system?
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Domain name system (DNS) domain. NIS uses name resolution services using the centralized /etc/hosts file. It does not run or require DNS services. (NIS and DNS names should differ)
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What must be done before you configure a NIS master server?
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You need to configure a NIS domain name and a NIS client.
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In what file can specify a NIS domain name?
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The /etc/sysconfig/network file.
(NIS_DOMAINNAME=name) |
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what command specifies a NIS domain without restarting your system?
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[user@hostname]$ domainname name
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What 2 Daemons that must run on a NIS client?
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ypbind and ypwhich
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How do NIS client applications use the ypbind daemon?
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To locate the master and slave NIS servers for the NIS domain to which they belong.
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From what file does the daemon read information about NIS domains and NIS servers?
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From the /etc/yp.conf configuration file. It does this when it first runs, and if it receives the SIGHUP signal
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What action will issue a SIGHUP signal?
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Restarting ypbind with the kill -HUP command.
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How do NIS client applications use the ypwhich daemon?
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The ypwhich daemon identifies the NIS master server for the NIS domain to which a client belongs.
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What client file is modified to specify the NIS server(s) for the local domain Once you've named a NIS domain?
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The /etc/yp.conf file.
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What command is used to modify the /etc/yp.conf file to specify the server name or IP address NIS server(s) for the local domain?
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ypserver servername
ypserver IPaddress |
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If a network includes multiple NIS domains, Can they be specified?
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Yes, you can specify which NIS servers belong to specific NIS domains in the /etc/yp.conf file.
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What command will set the ypbind daemon to locate the domain to which a server belongs?
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/etc/yp.conf : domain admin broadcast
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How do you start the ypbind daemon on a NIS client?
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Log in as root, specify the /etc/init.d/ypbind directory, and enter the start command:
[]$/etc/init.d/ypbind start |
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How do you set the client automatically to start ypbind when the system boots?
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Add the /etc/init.d/ypbind start command to the /etc/rc.local file.
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