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Kirk found a local community college with a two-year program and he is comparing the cost with that of an out-of-state two-year

Dafna11 [192]

What is the expected total cost for one year at the local community college if Kirk lives at home?

Answer: $6845

What is the expected total cost for one year at the out-of-state school if Kirk lives on campus?

Answer: $30,566

5 0

2 years ago

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Write a function string middle(string str) that returns a string containing the middle character in str if the length of str is

Katen [24]

Answer:

function getMiddle(s) {

return s.length % 2 ? s.substr(s.length / 2, 1) : s.substr((s.length / 2) - 1, 2);

}

// I/O stuff

document.getElementById("submit").addEventListener("click", function() {

input = document.getElementById("input").value;

document.getElementById("output").innerHTML = getMiddle(input);

});

Explanation:

// >>> is an unsigned right shift bitwise operator. It's equivalent to division by 2, with truncation, as long as the length of the string does not exceed the size of an integer in Javascript.

// About the ~ operator, let's rather start with the expression n & 1. This will tell you whether an integer n is odd (it's similar to a logical and, but comparing all of the bits of two numbers). The expression returns 1 if an integer is odd. It returns 0 if an integer is even.

// If n & 1 is even, the expression returns 0.

// If n & 1 is odd, the expression returns 1.

// ~n & 1 inverts those two results, providing 0 if the length of the string is odd, and 1 if the length of the sting is even. The ~ operator inverts all of the bits in an integer, so 0 would become -1, 1 would become -2, and so on (the leading bit is always the sign).

// Then you add one, and you get 0+1 (1) characters if the length of the string is odd, or 1+1 (2) characters if the length of the string is even.

6 0

2 years ago

Your company just bought a new subsidiary based in Des Moines, Iowa. Although your local operation already uses IPv6 for local n

AlexFokin [52]

Answer:

Answer explained below

Explanation:

Following are the arguments that can be used to persuade our colleagues in Des Moines to switch there network to IPv6 or to enable dual use of IPv6 and IPv4 :

IPv6 provides an increased capacity of address space as resources are efficiently allocated to provide coverage to additional web addresses.
IPv6 provides efficient routing by conveniently aggregating the prefixes that have been assigned to IP networks.
IPv6 conserves bandwidth by enabling large data packets. it uses less bandwidth than IPv4 for the same data.
IPv6 is more secure than IPv4 due to multiple security layers built in the firewall. It also provides authentication layers and integrity of data.
IPv6 supports multicast rather than broadcast.
IPv6 has more efficient packet processing and error detection through checksum as compared to IPv4.
Address and network configuration is fully simplified and automatic in IPv6 but the same is not true for IPv4.
IPv4 supports 32 bit IP address whereas IPv6 supports 128 bit. Therefore more number of IP addresses availability makes IPv6 future oriented.