8 Network+ Practice and Exam Readiness Free Online FlashCards

What are the five N10-009 domain weights?

Networking Concepts: 23%; Network Implementation: 20%; Network Operations: 19%; Network Security: 14%; Network Troubleshooting: 24%.

How do a switch and router differ in their forwarding roles?

A switch generally forwards frames within a LAN; a router forwards packets between IP networks.

How do a firewall, IDS, and IPS differ?

A firewall enforces traffic policy. An IDS detects suspicious activity, while an IPS can block it.

What does an IPv4 APIPA address commonly indicate?

An address in the APIPA range commonly indicates that the host did not obtain an IPv4 lease from DHCP.

What are the network, broadcast, and usable host addresses for 192.168.40.64/27?

For 192.168.40.64/27, the network address is .64, the broadcast address is .95, and usable host addresses are .65–.94.

Which route matches 10.20.30.45 more specifically: 10.20.0.0/16 or 10.20.30.0/24?

The router normally selects 10.20.30.0/24 because it is the more specific matching prefix.

How does a trunk port differ from a host-facing access port?

A trunk carries multiple VLANs over a link using 802.1Q tagging. A host-facing port normally belongs to the host’s access VLAN.

Why configure a DHCP relay when the server is on another subnet?

A DHCP relay on the client VLAN’s routing interface forwards DHCP requests so they can reach a server on another subnet.

What is the difference between RPO and RTO?

RPO concerns the maximum acceptable data loss; RTO concerns the target time to restore service.

What security threat is suggested by an unauthorized network imitating a trusted SSID?

A rogue or evil-twin access point may imitate a trusted SSID. Report and investigate it, and avoid entering credentials into an unverified portal.

Which control authenticates users before a switch port grants network access?

802.1X provides port-based network access control using authentication.

What can rising CRC errors on an interface indicate?

Rising CRC errors can indicate a cabling, connector, transceiver, or other link-quality issue. Compare counters over time and inspect the physical path.