vd89

                Section 1

1. Expand Bash.
    
    Ans: 
        bash is an sh-compatible command language interpreter that executes commands read from the standard input or from a file. bash also incorporates useful features from the Korn and C shells (ksh and csh).

        bash is intended to be a conformant implementation of the Shell and Utilities portion of the IEEE POSIX specification (IEEE Standard 1003.1). bash can be 
        configured to be POSIX-conformant by default.

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31. Why are we running out of IPv4 Addresses?
    
    Ans: 
        it is due to the community's responsible stewardship of these resources that we have been able to provide many thousands of new networks in our service region with /22 allocations after we reached our last /8 in 2012.

32. Can a device have both IPv4 and IPv6 address simultaneously?
    
    Ans:
        Yes, they can have both the IPv4 and IPv6 

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23. The decimal expansion of ​ 11/17 is 0.647.​ Find the binary expansion​ of the fraction ​ 11/17.

    Ans.
            11/17 = 0.647
            
            1011 = (11)10
            10001 = (17)10

            10001 )10110 ( 0.101001011
                   10001

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7. What is the ​ largest positive number​ one can represent in
    a ​ 12-bit 2's complement​ code? Write your result in binary
    and decimal?

Ans: 

    Largest 12-bit binary positive = 0111 1111 1111 
    In Decimal = (1+2+4+8+16+32+64+128+256+512+1024+0) = 2047 = 2^11 -1 

vd89

Question and answer for the problem set 

    1. What is the Decimal equivalent of (​11110000101010101​)2

        Ans.    1 * 2^16 = 65536
                1 * 2^15 = 32768
                1 * 2^14 = 16384
                1 * 2^13 = 8192
                0 * 2^12 = 0
                0 * 2^11 = 0

vd89

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