Using Strategies and Word Patterns: The Code Book - Quiz Quiz Answers

A central idea in The Code Book is the concern that much of the world’s information is not secure. Which lines from the passage best support this central idea? Choose three correct answers.

One of the author’s purposes in The Code Book is to explain different types of codebreaking to his readers. Which line best demonstrates this purpose?

Read the excerpt from The Code Book . A more recent development is the so-called tempest attack, which aims to detect the electromagnetic signals emitted by the electronics in a computer's display unit. Which two words share a prefix?

Read the excerpt from The Code Book . Despite the enormous strength of RSA and other modern ciphers, cryptanalysts are still able to play a valuable role in intelligence gathering. Their success is demonstrated by the fact that cryptanalysts are in greater demand than ever before—the NSA is still the world's largest employer of mathematicians. What is the central idea of this paragraph?

Jac is reading this paragraph from The Code Book . Mathematicians have been studying factoring for centuries, and modern factoring techniques are not significantly better than ancient techniques. Indeed, it could be that the laws of mathematics forbid the existence of a significant shortcut for factoring. Which question will best help Jac apply the reading to his own life?

Read the sentence. David's family was puzzled by the short and cryptic note he left on the table. Using context from The Code Book, what does cryptic mean?

Review the excerpt from The Code Book . In 1998, a report by Wayne Madsen revealed that the Swiss cryptographic company Crypto AG had built backdoors into some of its products, and had provided the U.S. Government with details of how to exploit these backdoors. As a result, America was able to read the communications of several countries. In 1991 the assassins who killed Shahpour Bakhtiar, the exiled former Iranian prime minister, were caught thanks to the interception and backdoor decipherment of Iranian messages encrypted using Crypto AG equipment. In this paragraph, the author uses a real-life example to demonstrate how cryptography

Review the excerpt from The Code Book . If Eve parks a van outside Alice's house, she can use sensitive tempest equipment to identify each individual keystroke that Alice makes on her computer. This would allow Eve to intercept the message as it is typed into the computer, before it is encrypted. To defend against tempest attacks, companies are already supplying shielding material that can be used to line the walls of a room to prevent the escape of electromagnetic signals. In this excerpt, the author explains

Read the excerpt from The Code Book . Although traffic analysis, tempest attacks, viruses and Trojan horses are all useful techniques for gathering information, cryptanalysts realize that their real goal is to find a way of cracking the RSA cipher, the cornerstone of modern encryption.The RSA cipher is used to protect the most important military, diplomatic, commercial and criminal communications—exactly the messages that intelligence gathering organizations want to decipher. If they are to challenge strong RSA encryption, cryptanalysts will need to make a major theoretical or technological breakthrough. What is the central idea of this paragraph?

Read the excerpt from The Code Book . The Trojan horse, another software trick, involves Eve designing a program that appears to act like a genuine encryption product, but which actually betrays the user. What part of speech is the underlined word?