Network+ Networking Fundamentals Flashcards
7 cards from real COMPTIA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Network+ Networking Fundamentals flashcards as text
What is the valid host range for the subnet 192.168.10.64/26?
Answer: 192.168.10.65 – 192.168.10.126
A /26 subnet has 64 addresses; the network address is .64 and broadcast is .127, leaving .65–.126 as valid hosts.
Which IPv6 address type is equivalent to IPv4 private addresses and is routable only within a site?
Answer: Unique local
Unique local addresses (FC00::/7) are the IPv6 equivalent of RFC 1918 private addresses and are not routed on the global internet.
A host needs to determine the MAC address of another host on the same subnet. Which protocol does it use?
Answer: ARP
ARP (Address Resolution Protocol) maps a known IP address to its corresponding MAC address on a local network segment.
What is the maximum transmission unit (MTU) for standard Ethernet frames?
Answer: 1500 bytes
Standard Ethernet has an MTU of 1500 bytes; jumbo frames can use 9000 bytes but require explicit configuration.
Which statement best describes a collision domain?
Answer: A network segment where devices compete for the same shared medium
A collision domain is a network segment where simultaneous transmissions cause collisions; switches break collision domains per port.
Which protocol automatically assigns IP addresses, subnet masks, default gateways, and DNS server addresses to clients?
Answer: DHCP
DHCP (Dynamic Host Configuration Protocol) dynamically provides IP configuration to network clients using a Discover, Offer, Request, Acknowledge sequence.
At which OSI layer do hubs operate?
Answer: Layer 1 — Physical
Hubs are Layer 1 devices that simply repeat electrical signals to all ports with no intelligence about addressing.