CompTIA Network+ — Practice Exam
2.0 Network Implementation: practice questions
Our CompTIA Network+ bank has 65 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
Many internal hosts share one public IP address, distinguished by source port numbers. What is this?
- Static one-to-one network address translation
- Anycast
- VLAN tagging
- Port address translation (PAT)
Show the answer
D. Port address translation (PAT) — PAT (NAT overload) maps many private addresses to one public address using unique port numbers.
Question 2
What does a default route of 0.0.0.0/0 do?
- Drops all traffic not in the table
- Sends traffic only to directly connected networks
- Disables routing on the interface
- Matches any destination that has no more specific route
Show the answer
D. Matches any destination that has no more specific route — 0.0.0.0/0 is the least specific prefix, used as a gateway of last resort.
Question 3
What is a switch virtual interface (SVI)?
- A physical port set to trunk mode
- A virtual switch inside a hypervisor
- A logical Layer 3 interface for a VLAN on a switch
- A backup copy of the VLAN database
Show the answer
C. A logical Layer 3 interface for a VLAN on a switch — An SVI gives a VLAN an IP address, used for management or inter-VLAN routing on a multilayer switch.
Question 4
Which interior routing protocol was developed by Cisco and is described as an advanced distance-vector (hybrid) protocol?
- OSPF
- BGP
- EIGRP
- IS-IS
Show the answer
C. EIGRP — EIGRP uses DUAL and a composite metric of bandwidth and delay; Cisco published it as an informational RFC (7868).
Question 5
Which routing protocol exchanges routes between autonomous systems on the internet?
- OSPF
- BGP
- EIGRP
- RIP
Show the answer
B. BGP — Border Gateway Protocol is the exterior gateway protocol of the internet (RFC 4271).