What is the total number of unique host addresses that can be assigned to active devices within a standard Class C IP subnet mask block? MCQ with Answer and Explanation
What is the total number of unique host addresses that can be assigned to active devices within a standard Class C IP subnet mask block?
A. 254 host addresses
B. 256 host addresses
C. 128 host addresses
D. 512 host addresses
Answer: Option A
Solution (By JKSSB Mock Tests)
While a standard Class C block contains 256 total addresses, the first address (network ID) and last address (broadcast address) are reserved, leaving 254 usable host slots.
What happens on a shared Ethernet network using a Bus Topology layout if a data frame reaches either extreme physical endpoint without encountering a terminator component?
A.The signal transforms into an analog wave profile.
B.The signal bounces back along the cable, creating interference that corrupts ongoing network traffic.
C.The data frame is safely archived on the primary server.
D.The data frame loops back through the local host interface automatically.
Which topology design provides an exceptionally robust environment where the failure of any single connection line affects only the device connected to that specific line?
Explanation:
In a star topology, each node uses an isolated cable run to connect to a central switch. A break in one cable only disconnects that specific device.
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