exec mode is used for show and debug commands. There are multiple privilege levels associated with exec mode. These command privs (and who can use them) can be managed with Cisco's AAA features. config mode is used to enter configurations from the CLI. Individual config commands can be limited with AAA features.
The Earth's inner core is the Earth's innermost part. It is primarily a solid ball with a radius of about 1,220 kilometres, which is about 70% of the Moon's radius. It is composed of an ironânickel alloy and some light elements. The temperature at the inner core's surface is approximately 5,700 K, which is about the temperature at the surface of the Sun.
The Inner Core. The Inner Core is the final layer of the Earth. It is a solid ball made of metal. To learn about what metal the Inner Core is made of, read this section about the Inner Core. You can also learn how hot the Inner Core is, how thick it is and some interesting facts about the Inner Core.