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To earn this certification one must pass the 210-260 IINS (Implementing Cisco IOS Network Security) exam, as well as hold a current CCNA certification. The CCNA-Security is a prerequisite to the CCNP Security certification. [23] It represents the required exam to earn the certification and for continuing the security certification path to the CCNP.
The Solar System is traveling at an average speed of 230 km/s (828,000 km/h) or 143 mi/s (514,000 mph) within its trajectory around the Galactic Center, [3] a speed at which an object could circumnavigate the Earth's equator in 2 minutes and 54 seconds; that speed corresponds to approximately 1/1300 of the speed of light.
One complete orbit takes 365.256 days (1 sidereal year), during which time Earth has traveled 940 million km (584 million mi). [2] Ignoring the influence of other Solar System bodies, Earth's orbit, also called Earth's revolution, is an ellipse with the Earth–Sun barycenter as one focus with a current eccentricity of 0.0167. Since this value ...
Frank F. Borman II, James A. Lovell Jr., and William A. Anders, 21–27 December 1968, first human circumnavigation of the Earth-Moon system, 10 orbits around the moon in about 20 hours, aboard Apollo 8; total trip to the moon and back was more than 6 Earth days.
A Cisco Certified Network Professional (CCNP) is a person in the IT industry who has achieved the professional level of Cisco Career Certification. [1]
While the Kármán line is defined for Earth only, several scientists have estimated the corresponding figures for Mars and Venus. Isidoro Martínez arrived at 80 km (50 miles) and 250 km (160 miles) high, respectively, [31] while Nicolas Bérend arrived at 113 km (70 miles) and 303 km (188 miles). [32]
Orbit of AMC-8 satellite around the Earth in 2000, transferring from a geostationary transfer orbit to a geostationary orbit. An orbital spaceflight (or orbital flight) is a spaceflight in which a spacecraft is placed on a trajectory where it could remain in space for at least one orbit.
The launch vehicle's delta-v needed to achieve low Earth orbit starts around 9.4 km/s (5.8 mi/s). The pull of gravity in LEO is only slightly less than on the Earth's surface. This is because the distance to LEO from the Earth's surface is much less than the Earth's radius.