问题:单选题A system administrator has added a new port entry in /etc/services for a new application to be tested. Which of the following commands should be used to activate this port?()A telinit -qB refresh -s inetdC startsrc -g servicesD refresh -s portmap
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问题:单选题An application or user experiences poor performance, yet examination of the nfsstat -c output indicates no or very few timeouts and retransmits. This means that the client is receiving responses from the server as fast as it is asking for them. What is the first thing to be checked?()A There is an appropriate number of NFS daemons running on the server machineB There is an appropriate number of biod daemons running on the client machineC The server is not CPU boundD There is an appropriate number of biod daemons running on the server machine
问题:单选题Which of the following files should be edited to enable SNMP?()A /etc/rc.nfsB /etc/rc.tcpipC /etc/rc.netD /etc/inetd.conf
问题:单选题A client cannot mount a filesystem from an NFS server. Which of the following options is the most probable cause for the mount failure?()A Server is not running rpc.lockdB Client is not running the rpc.statdC Filesystem not exported by the serverD Client nfsd daemons are all inoperative
问题:单选题Which of the following flow control settings allows resumption of suspended output by hitting the "R" key?()A XON/XOFFB NONEC RTS/CTSD XON/IXANY
问题:单选题A DNS server for a large network is experiencing performance problems. Which of the following options is the best solution to fix the problem?()A Enable NISB Purchase a larger serverC Use /etc/hosts on all of the systemsD Create secondary name servers throughout the network
问题:单选题Which of the following functions does the "ifconfig en4 down" perform?()A Removes the en4 interfaceB Removes the en4’s network routeC Stops all traffic through the en4 interfaceD Stops all traffic through the en4 and removes its network route from the routing table
问题:单选题Which of the following files should be edited to disable remote machines from performing a "finger" on a system?()A /etc/security/userB /etc/servicesC /etc/inetd.confD /etc/hosts.equiv
问题:单选题Which daemon is required to be running for Primary Domain Name Servers?()A gatedB routedC iptraceD named
问题:单选题Users complain they cannot communicate with a server. The system administrator suspects there may be a problem with the Ethernet adapter or with the way it is configured. Which command can be run to verify the adapter is configured correctly?()A netstat -inB ifconfig -aC arp -aD cfgmgr
问题:单选题Which command is used to turn ipforwarding on or off?()A ifconfigB noC chdevD netstat
问题:单选题To enable a tty port to be used for a cu session what must be done to the system?()A smit tty; take the defaults and create the desired ttyB In the /etc/uucp Devices add a line similar to: Direct ttyX - 9600 directC Install bos.net.uucp and the first available tty will be configured for use by a cu sessionD Run the Asynchronous Terminal Emulation (ATE) program and it will configure a tty port for a cu session
问题:单选题A modem is set up for a remote TTY connection that will become the system console. How should one verify that the console is enabled as the system console after the next reboot?()A lscons -bB lscons -dC lscons -sD swcons /dev/tty0
问题:单选题Which of the following Class A networks is reserved for "private networks" use only?()A network 10.0.0.0B network 127.0.0.0C network 129.135.0.0D network 192.168.0.0
问题:单选题Which of the following files should be edited so that tftpd is running with the -n option?()Aetc/servicesB /etc/inetd.confC/etc/tftpd.confD/etc/rc.net
问题:单选题Which of the following cable types can cause interference on the network when disconnecting any one machine?()A CoaxialB Cat 1 UTPC Cat 3 UTPD Cat 5 UTP
问题:单选题NFS is experiencing name service resolution difficulties. Which command reports the LEAST useful information in trouble-shooting this problem?()A nfsstat -sB lssrc -s namedC ls -l /etc/resolv.confD nslookup hostname
问题:单选题Which of the following lines will be added to the file /usr/lib/uucp/Devices on the SLIP server machine for a SLIP connection on tty1?()A direct 9600 - tty1B direct tty1 - 9600C Direct tty1 - 9600D Direct /dev/tty1 - 9600
问题:单选题To disable all tcpip deamons that are not required on a server, which of the following files should be edited?()A /etc/rc.nfsB /etc/rc.tcpipC /etc/rc.netD /etc/inetd.conf
问题:单选题Which command will change the quantity of biod daemons immediately and for each subsequent reboot?()A chnfs -b newvalueB chnfs -N -b newvalueC chnfs -I -b newvalueD netstat -s newvalue