Do You Need Network+ Before Security+?

Prerequisite, recommendation, and knowledge

CompTIA does not make you hold Network+ before you can buy or sit Security+. On the V7 page, the recommended experience is Network+ and two years in a security or systems administrator role. The objectives PDF says a minimum of two years of IT administration with a focus on security. Those are recommendations, not a gate at the testing center.

The same FAQ answers “Can I skip CompTIA Network+ and take CompTIA Security+?” with “You can, but it’s not recommended,” because IT professionals need to know how a network works before they secure it. That is advice against skipping the knowledge, not a testing-center rule. SY0-701 still expects secure protocols, port selection, and segmentation in context. The ports guide is that narrower question. This page is whether to stop for another certification first.

Whether the credential is worth buying at all is the worth-it guide. How long a Security+ plan might take, without a promise, is how long to study.

Eight-item check

This check finds gaps. It does not predict a Security+ score. Answer from memory, then read the note.

1. What does a default gateway do? It is the router address a host uses when the destination is not on the local network. “The Wi-Fi name” is a miss.

2. Why can 192.0.2.10 appear in a textbook and not on your home LAN? 192.0.2.0/24 is reserved for documentation. It is not “private because it starts with 192.” 192.168.0.0/16 is the common private block. Mixing those up will make later log examples confusing.

3. What does DNS answer? It maps a name to an address, and related records. It does not decide whether a connection is allowed.

4. Name one difference between TCP and UDP. TCP sets up a connection and retransmits lost data. UDP does not. Security tools still see both. “TCP is secure and UDP is not” is a miss.

5. What does a subnet boundary change for a broadcast? Hosts in different subnets do not share the same broadcast domain. A VLAN or a subnet is not, by itself, a security policy. It is a boundary a firewall or filter can use.

6. Is HTTPS “port 443” and nothing else? Port 443 is the usual TCP port. HTTPS is HTTP protected by TLS. A firewall rule that allows 443 does not inspect the application, and another service can be placed on that port.

7. What does a switch do that a router does not? A switch forwards frames inside a local network using MAC addresses. A router forwards packets between networks using IP. Calling every box a router will blur segmentation questions.

8. If you can ping a host, is the service safe? Reachability shows a path. It does not show authentication, encryption, or whether the service should be exposed.

Misses on 1, 4, 5, or 7 are a reason to study networking before you lean on Security+ practice. They are not a reason to buy Network+ unless you also want that credential.

Which path fits

CompTIA’s FAQ mentions 30 to 40 hours of study for Security+. That is their suggestion, not your schedule. Nothing in this table is a promise about how many weeks you need.

Build a Security+ study plan around the date you can actually sit →. The plan will not tell you that you are ready, and it will not transfer into the app.