Question: Today, computer security comprises mainly "preventive" measures, like firewalls or an exit procedure. A firewall can be defined as a way of filtering network data between a host or a network and another network, such as the Internet, and can be implemented as software running on the machine, hooking into the network stack (or, in the case of most UNIX-based operating systems such as Linux, built into the operating system kernel) to provide real time filtering and blocking. Another implementation is a so-called physical firewall which consists of a separate machine filtering network traffic. Firewalls are common amongst machines that are permanently connected to the Internet.
Try to answer this question if possible: What is an exit procedure?
Answer: unanswerable
Question: Eton has a long list of distinguished former pupils. David Cameron is the 19th British prime minister to have attended the school, and has recommended that Eton set up a school in the state sector to help drive up standards. Eton now co-sponsors a state sixth-form college in Newham, a deprived area of East London, called the London Academy of Excellence, opened in 2012, which is free of charge and aims to get all its students into higher education. In September 2014, Eton opened, and became the sole educational sponsor for, a new purpose-built co-educational state boarding and day school for around 500 pupils, Holyport College, in Maidenhead in Berkshire, with construction costing around £15 million, in which a fifth of places for day pupils will be set aside for children from poor homes, 21 boarding places will go to youngsters on the verge of being taken into care, and a further 28 boarders will be funded or part-funded through bursaries.
Try to answer this question if possible: How does London Academy of Excellence vary in cost from Eton College?
Answer: free of charge
Question: A resin used for making non-wrinkle shirts releases formaldehyde, which could cause contact dermatitis for some people; no disclosure requirements exist, and in 2008 the U.S. Government Accountability Office tested formaldehyde in clothing and found that generally the highest levels were in non-wrinkle shirts and pants. In 1999, a study of the effect of washing on the formaldehyde levels found that after 6 months after washing, 7 of 27 shirts had levels in excess of 75 ppm, which is a safe limit for direct skin exposure.
Try to answer this question if possible: How many ppm is a safe limit for direct skin exposure to formaldehyde?
Answer: 75
Question: National park and nature reserve is the area selected by governments or private organizations for special protection against damage or degradation with the objective of biodiversity and landscape conservation. National parks are usually owned and managed by national or state governments. A limit is placed on the number of visitors permitted to enter certain fragile areas. Designated trails or roads are created. The visitors are allowed to enter only for study, cultural and recreation purposes. Forestry operations, grazing of animals and hunting of animals are prohibited. Exploitation of habitat or wildlife is banned.
Try to answer this question if possible: What types of parks receive special protection against conservation?
Answer:
unanswerable