Answer:
False
Explanation:
NPV stands for Net Present Value, it is an important term in finance as it used to determine the value of money or investment based on a series of cashflows and specified discount rate. Excel provides a functions which aids easy calculation of the Net Present value of money or investment using the NPV formula. The syntax forbthe NPV formula is :
=NPV(rate,value 1, [value 2],...)
This formular requires only tow key parameters ; the discount rate, which comes first and the cashflows, which is designated in the syntax as values ; the cashflows is usually placed in a range of cells in excel and the cell range is inputed in the formular. Hence, the number of payments and future value aren't part of the NPV syntax.
Answer:
Downcasting
Explanation:
Downcasting is a way of determining whether a given object is of a particular subclass type. In object-oriented programming downcasting is used to cast an object to a subtype. Even though sometimes it throws a compile-time error in Java, downcasting can be done on languages like Java, C++, C#. The opposite of downcasting is upcasting, which is simply the casting of an object to supertype or parent type.
Answer:
a
Explanation:
because the trust need to know what was the problem in the first place
Answer: D. Turing conceived the structure of a programmable computer.
Explanation: The passage describes how Alan M. Turing described the theoretical aspect of a programmable computer. There is no reference to a physical machine or Turing working on an actual (physical) computer.
The Turing machine, although it does sound like a physical computer was an abstract idea, conceived in mathematical form of what a programmable machine would be like. Alan Turing is considered one of the founding fathers of theoretical computer science.
Answer:
(b) is used in Traceroute
(d) is used by Ping
Explanation:
ICMP is the short form of Internet Control Message Protocol. It is a protocol used by networking devices such as routers to perform network diagnostics and management. Since it is a messaging protocol, it is used for sending network error messages and operations information. A typical message could be;
i. Requested service is not available
ii. Host could not be reached
ICMP does not use ports. Rather it uses types and codes. Some of the most common types are <em>echo request</em> and <em>echo reply.</em>
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Traceroute - which is a diagnostic tool - uses some messages available in ICMP (such as <em>Time Exceeded</em>) to trace a network route.
Ping - which is an administrative tool for identifying whether a host is reachable or not - also uses ICMP. The ping sends ICMP <em>echo request </em>packets to the host and then waits for an ICMP <em>echo reply</em> from the host.
ICMP is not required to solve NAT traversal problem neither does it have a new version in IPV6.
