Networking ConceptsQuestion 1 of 100
Which layer of the OSI model is responsible for logical addressing and determining the best path for packets across an internetwork?
a.Layer 2 (Data Link)
b.Layer 1 (Physical)
c.Layer 3 (Network)
d.Layer 4 (Transport)
Explanation
Layer 3, the Network layer, handles logical addressing such as IP and makes routing decisions to move packets between networks. The Data Link layer uses physical MAC addresses for local delivery, while the Transport layer manages end-to-end segmentation. Routers operate primarily at Layer 3.
Practice all 100 questions free — no signup required.
Related questions on this topic
- A network administrator needs to identify the protocol data unit (PDU) used at the Transport layer of the OSI model. Which term applies?
- Which protocol and port number are used by HTTPS for secure web traffic by default?
- What is the default port used by the Domain Name System (DNS) for standard name resolution queries?
- An engineer must choose an address class for a private network that supports up to 500 hosts on a single subnet. Which private range is most appropriate to draw from?
- How many usable host addresses are available in a subnet with a /29 prefix?
- Which IPv6 address type begins with the prefix FE80::/10 and is used only for communication on the local link?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against CompTIA Network+ (N10-009) · How we review