CompTIA Network+ Network+ Networking Fundamentals 3

Question 1

What is the valid host range for the subnet 192.168.10.64/26?

Accepted Answer

192.168.10.65 – 192.168.10.126

Answer

A /26 subnet has 64 addresses; the network address is .64 and broadcast is .127, leaving .65–.126 as valid hosts.

Question 2

Which IPv6 address type is equivalent to IPv4 private addresses and is routable only within a site?

Accepted Answer

Unique local

Answer

Unique local addresses (FC00::/7) are the IPv6 equivalent of RFC 1918 private addresses and are not routed on the global internet.

Question 3

A host needs to determine the MAC address of another host on the same subnet. Which protocol does it use?

Accepted Answer

ARP

Answer

ARP (Address Resolution Protocol) maps a known IP address to its corresponding MAC address on a local network segment.

Question 4

What is the maximum transmission unit (MTU) for standard Ethernet frames?

Accepted Answer

1500 bytes

Answer

Standard Ethernet has an MTU of 1500 bytes; jumbo frames can use 9000 bytes but require explicit configuration.

Question 5

Which statement best describes a collision domain?

Accepted Answer

A network segment where devices compete for the same shared medium

Answer

A collision domain is a network segment where simultaneous transmissions cause collisions; switches break collision domains per port.

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