QUES: USB 2.0 devices use a special protocol during reset, called chirping, to negotiate the high bandwidth mode with the host/hub. A device that is HS capable first connects as an FS device (D+ pulled high), but upon receiving a USB RESET (both D+ and D− driven LOW by host for 10 to 20 ms) it pulls the D− line high, known as chirp K. This indicates to the host that the device is high bandwidth. If the host/hub is also HS capable, it chirps (returns alternating J and K states on D− and D+ lines) letting the device know that the hub operates at high bandwidth. The device has to receive at least three sets of KJ chirps before it changes to high bandwidth terminations and begins high bandwidth signaling. Because USB 3.0 uses wiring separate and additional to that used by USB 2.0 and USB 1.x, such bandwidth negotiation is not required.

What type of protocol is used for USB 2.0 devices during a reset?
What is the answer?
ANS: a special protocol
QUES: The Romans under Nero Claudius Drusus established a military outpost belonging to the Germania Superior Roman province at Strasbourg's current location, and named it Argentoratum. (Hence the town is commonly called Argentina in medieval Latin.) The name "Argentoratum" was first mentioned in 12 BC and the city celebrated its 2,000th birthday in 1988. "Argentorate" as the toponym of the Gaulish settlement preceded it before being Latinized, but it is not known by how long. The Roman camp was destroyed by fire and rebuilt six times between the first and the fifth centuries AD: in 70, 97, 235, 355, in the last quarter of the fourth century, and in the early years of the fifth century. It was under Trajan and after the fire of 97 that Argentoratum received its most extended and fortified shape. From the year 90 on, the Legio VIII Augusta was permanently stationed in the Roman camp of Argentoratum. It then included a cavalry section and covered an area of approximately 20 hectares. Other Roman legions temporarily stationed in Argentoratum were the Legio XIV Gemina and the Legio XXI Rapax, the latter during the reign of Nero.

In what year was Nero made emperor?
What is the answer?
ANS: unanswerable
QUES: NAACP had many problem's with JFK's "token" proposal. They wanted jobs. One day after the order took effect, NAACP labor secretary Herbert Hill filed complaints against the hiring and promoting practices of Lockheed Aircraft Corporation. Lockheed was doing business with the Defense Department on the first billion-dollar contract. Due to taxpayer-funding being 90% of Lockheed's business, along with disproportionate hiring practices, black workers charged Lockheed with "overt discrimination." Lockheed signed an agreement with Vice President Johnson that pledged an "aggressive seeking out for more qualified minority candidates for technical and skill positions.:63–64 This agreement was the administration's model for a "plan of progress." Johnson and his assistants soon pressured other defense contractors, including Boeing and General Electric, to sign similar voluntary agreements indicating plans for progress. However, these plans were just that, voluntary. Many corporations in the South, still afflicted with Jim Crow laws, largely ignored the federal recommendations.:63–64

Who had issues with JFK's rejection?
What is the answer?
ANS:
unanswerable