46>which of the following responsible for memory management?
a>system hardware b>operating system
c>system software d>system program
47>which of the following is not a file access operation?
a>read b>write c>open d> rename
48>which of the following is not connected with revocation of access rights?
a>immediate b>delayed c>selective d>reactive
49> under which condition we have any process neither killed nor shared?
a>Mutual exclution b>no preemption c>circular wait d>hold and wait
50>which of following not a deadlock prevention technique?
a> Mutual exclution b>no preemption c>bankers algorithm d>hold and wait
51>which of following dos commands finds errors a drive and fixes any problem it encounters?
a>SCANDISK b>CHKDISK c>DISKCOPY d>DISKCHK
52>in the _______ approach you can keep the address of first free block and number of free contiguous blocks that follow first block?
a> Counting b>linked list c>bit vector d>grouping
53>if computers are connected across a single cable this is called which type of topology?
a>star b>bus c>hierarchical d>mesh
54> mirroring uses which raid level?
a>1 b>3 c>5 d>0
55>in which layers do error correction and detection happen?
a>layer 4,layer2 b>layer 5,layer 1
c>layer2,layer 4 d>layer1 ,layer 5
56>which of this protocols provides text connectionless communications that relies with upper layers of the OSI model for error correction?
A>TCP b>UDP c>SPX d>UDT
57>which protocol is used to automatically provide IP address to network computers?
a>DCHP b>DNS c>ARP d>IGMP
58>which command listed below is equal to 127.0.0.17?
a>ping 18.104.22.168 b>ping host c>ping localhost d>ping winip
59>u use a cable modem to connect to internet. You u r connected with security and want to protect ur computer frm malicious attacks. What windows xp professional services should u use??
a>ICS b>ICF c>WINS d>Proxy server
60>what is name of cisco firewall software?
a>pix b>juniper c>checkpoint d>Nortel
61>which file will automatically mount all fo the NFS resources during the boot process?
a>/etc/mnttab b>/etc/vlstab c>etc/dfs/dfstab d>/etc/rmtab
62>which file system contains file for operating system?
a>/opt b>/usr c>/root d>
63>which of following commands summarises disk usage in specified directory hierarchy?
a>df b>du c>bdf d>in
64>what r 2 major type of partitions available on a herd disk?
A >primary and virtual b> primary and secondary c>primary and extended d>primary and catche
65>ps/2 port is used in which of the following?
a>mouse only b> keybord only c>mouse and keybord d>play station 2 console