Company: Hughes Software systems
1.a processor has two level cache.Their access time (level1 and level2) is 100ns and 300ns respect.Memeory access time is 1000ns$ ans is 140 (b)
2.diskless server uses
a rarp
b arp
c ftp
d.telnet
ans rarp
3.which one of them is not a client server
e-mail
telephone
webserver
and one more
ans is e-mail or telephone.
4. ;Which one is used to represent operations
infix
postfix
binarytree
and one more
ans binary tree
5.one qustion was on private key and public key.The quest. was
f a wants to send a message to b that no one other that b should $
A private key
A public key
B private key
B public key
6.compliers maintain
ans is symbol table From Diwaka
6.what a java interface not have ?
ans – instance variables
7.what is done with java code on a web-page
ans – downloaded and executed on ur pc
8.what is the order of deleting a node from a linked list given a ptr
to it
ans O(n) ( since u have to traverse the list to reach the prev.
node)
9.what is RSA
10.how can A send a messageto B so that B knows its from A
ans A uses his private key so that B can use A’s public key
11.what is the best sort in worst case
ans heap sort
12.what can access protected memebers of a class
ans other classes of that program
13.what protocol is used by a machine to map an ip to hardware address
ans arp
14.hat is the size of ipv6
ans 128 bits
15.how many keys are needed in symmetric and asymmetric crptography?
ans – i dont know
16.how many keys are needed in symmetric and asymmetric crptography?
ans – i dont know
17.one on a right threaded tree
18.very easy k-map
ans i think its b)
19.very easy ckt
ans choice which has option : a&c are equivalent
20.what in unix doesnt have a fd
ans process ( this was the first ques ).
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