28 Which commands are valid to turn off all debugging? ( 2 answers) A.) clear logging B.) no debug C.) no logging D.) clear debug E.) undebug all F.) no debug all
E F
29. Which of the following are valid Host ID’s for 157.89.9.50 /28 (12 bits of subnetting)? A.) 157.89.9.49 - 157.89.9.64 B.) 157.89.0.0 - 157.89.255.255 C.) 157.89.9.0 - 157.89.9.255 D.) 157.89.9.32 - 157.89.9.63 E.) 157.89.9.49 - 157.89.9.62
E Below is a very easy to use shortcut that requires no binary math: Figure out the mask: /28 = 255.255.255.240 Figure out the subnet multiple: 256-240=16 Subnets are 16,32,48,64,80, etc This is subnet 48, next subnet is 64, so the broadcast address is 63! Everything between the subnet (48) and broadcast (63) are the valid hosts. In this example, based on the given mask, the valid host ranges are 49-62.
D
31. Given the following address: 157.89.8.64 255.255.0.0 which part represents the host portion of the address? A.) 0.89.8.64 B.) 0.0.8.64 C.) 157.89.0.0 D.) 157.0.0.0 E.) 0.0.0.64