Article: After the sync field, all packets are made of 8-bit bytes, transmitted least-significant bit first. The first byte is a packet identifier (PID) byte. The PID is actually 4 bits; the byte consists of the 4-bit PID followed by its bitwise complement. This redundancy helps detect errors. (Note also that a PID byte contains at most four consecutive 1 bits, and thus never needs bit-stuffing, even when combined with the final 1 bit in the sync byte. However, trailing 1 bits in the PID may require bit-stuffing within the first few bits of the payload.)

Question: After the sync field, all packets are made of how many bit bytes?
Ans: 8-bit bytes

Article: The administration continues to follow the market reform plans of the previous one and indicated that it will diversify Iran's oil-reliant economy. Iran has also developed a biotechnology, nanotechnology, and pharmaceuticals industry. However, nationalized industries such as the bonyads have often been managed badly, making them ineffective and uncompetitive with years. Currently, the government is trying to privatize these industries, and, despite successes, there are still several problems to be overcome, such as the lagging corruption in the public sector and lack of competitiveness. In 2010, Iran was ranked 69, out of 139 nations, in the Global Competitiveness Report.

Question: What is a main goal of Iran's market reform plans?
Ans: diversify Iran's oil-reliant economy

Article: In the early 20th century Valencia was an industrialised city. The silk industry had disappeared, but there was a large production of hides and skins, wood, metals and foodstuffs, this last with substantial exports, particularly of wine and citrus. Small businesses predominated, but with the rapid mechanisation of industry larger companies were being formed. The best expression of this dynamic was in the regional exhibitions, including that of 1909 held next to the pedestrian avenue L'Albereda (Paseo de la Alameda), which depicted the progress of agriculture and industry. Among the most architecturally successful buildings of the era were those designed in the Art Nouveau style, such as the North Station (Gare du Nord) and the Central and Columbus markets.

Question: What architectural style was particularly successful?
Ans: Art Nouveau

Article: Windows 8 supports a feature of the UEFI specification known as "Secure boot", which uses a public-key infrastructure to verify the integrity of the operating system and prevent unauthorized programs such as bootkits from infecting the device's boot process. Some pre-built devices may be described as "certified" by Microsoft; these must have secure boot enabled by default, and provide ways for users to disable or re-configure the feature. ARM-based Windows RT devices must have secure boot permanently enabled.

Question: How does secure boot help avert boot process infections?
Ans:
uses a public-key infrastructure to verify the integrity of the operating system