At which OSI layer do routers primarily operate?
- Application
- Data Link
- NetworkCorrect
- Transport
The Crucial Exams Question of the Day (QOTD) is a daily social media post featuring a quick, simplified quiz question for one of the many certifications we cover.At which OSI layer do routers primarily operate?
You require synchronous replication with automatic failover for RDS. Which option provides this?
Which Wi-Fi security standard offers the strongest protection?
How many usable IPv4 hosts are in a /26 subnet?
Which attack uses repeated incomplete handshakes to exhaust a server's connection table?
Which control removes user access when a staffer leaves?
Which GCP database offers horizontally scalable relational DB with global consistency?
What addition to password hashing ensures identical passwords produce different stored hashes?
Which RAID level offers single distributed parity with striping?
Two IAM policies apply: one grants access, the other blocks it. What decision will IAM make?
Which protocol maps IPv4 addresses to MAC addresses on a local LAN?
Which NAT type lets many private hosts share one public IPv4 address?
STP selects the root bridge based on which primary value?
Which coding practice prevents SQL injection by separating SQL structure from untrusted input?
Default administrative distance for OSPF routes?
Which VPC control is stateful and attaches to instances?
A retina scan used for login is an example of which authentication factor?
Which IPv4 subnet mask allows 254 hosts?
Which configuration duplicates data across two drives without striping?
Which device reduces collisions while keeping a single IP subnet?
Which attack forces an authenticated user's browser to perform unintended actions?
Which algorithm type uses the same key to encrypt and decrypt data?
Which process confirms a claimed identity before granting access?
Which cloud model delivers software applications to users over the internet?
Which VPC control is stateless and applied at the subnet level?