Problem: A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building. By contrast, a wide area network (WAN) not only covers a larger geographic distance, but also generally involves leased telecommunication circuits or Internet links. An even greater contrast is the Internet, which is a system of globally connected business and personal computers.

Ethernet and Wi-Fi are the two most common technologies in use for local area networks. Historical technologies include ARCNET, Token ring, and AppleTalk.

The increasing demand and use of computers in universities and research labs in the late 1960s generated the need to provide high-speed interconnections between computer systems. A 1970 report from the Lawrence Radiation Laboratory detailing the growth of their "Octopus" network gave a good indication of the situation.

A number of experimental and early commercial LAN technologies were developed in the 1970s. Cambridge Ring was developed at Cambridge University starting in 1974. Ethernet was developed at Xerox PARC in 19731975, and filed as . In 1976, after the system was deployed at PARC, Robert Metcalfe and David Boggs published a seminal paper, "Ethernet: Distributed Packet-Switching for Local Computer Networks". ARCNET was developed by Datapoint Corporation in 1976 and announced in 1977. It had the first commercial installation in December 1977 at Chase Manhattan Bank in New York.
1. What does LAN stand for?
2. And what is that?
3. What about WAN?
4. Which kind of network would you use to connect to other computers at a school?
5. What would you use to visit websites?
6. When did demand and use of computers increase?
Answer: 1. local area network
2. a computer network
3. a wide area network
4. (LAN
5. (WAN
6. in the late 1960s

Problem: Chapter XI

Now that Grandfather had fought through the Old French War, in which our chair made no very distinguished figure, he thought it high time to tell the children some of the more private history of that praiseworthy old piece of furniture.

"In 1757," said Grandfather, "after Shirley had been summoned to England, Thomas Pownall was appointed governor of Massachusetts. He was a gay and fashionable English gentleman, who had spent much of his life in London, but had a considerable acquaintance with America. The new governor appears to have taken no active part in the war that was going on; although, at one period, he talked of marching against the enemy, at the head of his company of cadets. But, on the whole, he probably concluded that it was more befitting a governor to remain quietly in our chair, reading the newspapers and official documents."

"Did the people like Pownall?" asked Charley.

"They found no fault with him," replied Grandfather. "It was no time to quarrel with the governor, when the utmost harmony was required, in order to defend the country against the French. But Pownall did not remain long in Massachusetts. In 1759, he was sent to be governor of South Carolina. In thus exchanging one government for another, I suppose he felt no regret, except at the necessity of leaving Grandfather's chair behind him."

"He might have taken it to South Carolina," observed Clara.

"It appears to me," said Laurence, giving the rein to his fancy, "that the fate of this ancient chair was, somehow or other, mysteriously connected with the fortunes of old Massachusetts. If Governor Pownall had put it aboard the vessel in which he sailed for South Carolina, she would probably have lain wind-bound in Boston harbor. It was ordained that the chair should not be taken away. Don't you think so, Grandfather?"
1. when did Pownall become governor?
2. where was Shirley then?
3. did people like Pownall?
4. what happened in 1759?
5. what did he leave behind?
6. what war did grandfather fight in?
7. what did he decide to tell the kids?
8. where did Pownall grow up?
9. did he take part in the war?
10. what did he think about doing against the enenemy?
11. why didnt he?
Answer: 1. In 1757
2. England
3. yes
4. he was sent to be governor of South Carolina
5. Grandfather's chair
6. the Old French War
7. some of the more private history of the old piece of furniture
8. London
9. no
10. marching against them
11. it was more befitting a governor to remain quietly in our chair

Problem: LOS ANGELES, California (CNN) -- George Harrison's closest friends and family gathered in Hollywood on Tuesday to dedicate the late Beatle's star on the Walk of Fame.

From left, musicians Tom Petty, Jeff Lynne and Paul McCartney join Harrison's relatives for dedication of his star.

"There's someone here from every important stage of George's life and career," Harrison's widow, Olivia, said.

Harrison, who was 58 when he died of cancer in 2001, becomes the second Beatle with a Hollywood star. John Lennon was the first.

The new star is next to the iconic Hollywood headquarters of Capitol Records, the distributor of much of Harrison's music for the past five decades.

Tuesday's ceremony coincided with the Capitol/EMI announcement that it will release Harrison's first solo greatest hits collection -- "Let it Roll: Songs by George Harrison" -- on June 16.

Actor Tom Hanks said the world changed for him in January 1964 when he heard his first Beatles song.

"That's when we escaped the doldrums and moved on to a brighter, better, more joyful future," Hanks said.

Superstar musicians Paul McCartney, Tom Petty, Joe Walsh and Jeff Lynne attended the star's dedication, but they did not address the crowd.

Scores of Harrison fans showed up for the event, with some traveling from as far as Liverpool, England.

"We all have deep feelings for George, because he was such a deep-feeling person," Olivia Harrison said.

"He was a beautiful, mystical man, living in a material world," she said. "He was funny as the day is long and just as perplexing."
1. who was honored?
2. was he alive when it was presented?
3. how old was he when he passed away?
4. was he killed in an accident?
5. what killed him?
6. in what year?
7. was he married?
8. what was his wife's name?
9. what was his profession?
10. was he in a band?
11. called?
12. what was the honor given?
13. where?
14. on what day?
15. was something announced on that day?
16. what is that?
17. who is putting it out?
18. when?
Answer:
1. George Harrison
2. No
3. 58
4. No
5. cancer
6. 2001
7. Yes
8. Olivia
9. musician
10. Yes
11. The Beatle's
12. A star on the Walk of Fame.
13. Hollywood
14. Tuesday
15. "Let it Roll: Songs by George Harrison"
16. His greatest hits collection
17. Capitol/EMI
18. June 16.