CompTIA Network+: Core Concepts
Networking fundamentals for the CompTIA Network+ certification exam.
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Which OSI layer is responsible for routing packets across different networks using logical addressing?
Layer 3 (Network Layer)
What is the primary difference between a Hub and a Switch regarding collision domains?
A hub is a single collision domain, while a switch creates a separate collision domain for each port.
Which network topology connects every node to every other node, providing high redundancy?
Mesh Topology
What is the bit length of an IPv6 address?
128 bits
Which command-line tool is used to test basic connectivity between two devices using ICMP?
ping
What is the default port number for the HTTPS protocol?
Port 443
Which OSI layer is responsible for converting data into signals for transmission over physical media?
Layer 1 (Physical Layer)
What are the two main sublayers of the Data Link Layer (Layer 2)?
Logical Link Control (LLC) and Media Access Control (MAC)
What is the maximum distance and speed supported by the Cat6a Ethernet standard?
10 Gbps up to 100 meters
Which protocol is used to automatically assign IP addresses to devices on a network?
DHCP (Dynamic Host Configuration Protocol)
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