Question 1OSI model layers
At which OSI layer are data formats translated, for example character encoding and compression, so the receiving application can read them?
The Network+ exam objectives
Five domains, each weighted. The topics below follow CompTIA's own objectives summary for N10-009.
| Exam | N10-009 (V9) |
|---|---|
| Questions | A maximum of 90, multiple choice and performance-based |
| Time | 90 minutes |
| Passing score | 720 on a scale of 100 to 900 |
1. Networking concepts (23%)
The OSI model, networking appliances, cloud concepts, ports and protocols, traffic types, transmission media, transceivers and connectors, topologies, and IPv4 addressing including subnetting.
2. Network implementation (20%)
Static and dynamic routing, NAT and PAT, first-hop redundancy, VLANs and spanning tree, MTU and jumbo frames, wireless channels, frequencies, encryption and authentication, and physical installation: power and environment.
3. Network operations (19%)
Documentation and diagrams, life-cycle, change and configuration management, monitoring with SNMP, flow data and logs, disaster recovery metrics and sites, DHCP, SLAAC, DNS and time services, and remote access and management.
4. Network security (14%)
Encryption, PKI, authentication and authorization, physical security and deception, security terms and compliance, segmentation, network attacks, and defenses such as hardening, NAC, ACLs, content filtering and screened subnets.
5. Network troubleshooting (24%)
The troubleshooting method, cabling and interface faults, switching, routing and addressing faults, performance problems, and the tools: protocol analyzers, command-line tools, cable testers and Wi-Fi analyzers.
Try 3 questions
Question 2Network services
An engineer advertises an IPv6 prefix on a LAN so hosts can use SLAAC. Which prefix length must the advertised prefix have for SLAAC to work?
Question 3Types of attacks
An attacker arranges for traffic between a user and the file server to pass through the attacker's laptop, then reads and alters the data without either side noticing. What is this kind of attack called?
Next step
Questions people ask
Which Network+ domain is the largest?
Network troubleshooting, at 24% of the exam, then networking concepts at 23%.
Where can I read the official objectives?
CompTIA's Network+ exam page has an objectives summary for N10-009. The topics on this page follow it.
Does this course follow N10-009?
Yes. Every lesson and question is tagged to a topic in the N10-009 objectives summary.