IP services
25 practice questions with explanations — 15 free to try
3 of these 25 questions are in the free 15-question taster · the full topic is part of Premium
PassNova has 25 Cisco CCNA practice questions on IP services, each with a clear explanation. A 15-question taster is free with no sign-up; the full bank is part of PassNova Premium. Updated for 2026.
IP services: example questions & answers
3 worked examples with answers and explanations below. Try 15 Cisco CCNA questions free in the browser; the full 25-question IP services bank is part of PassNova Premium.
Which four-step process does a DHCP client use to obtain an address?
- ADiscover, Request, Offer, Ack
- BOffer, Discover, Ack, Request
- CRequest, Offer, Discover, Ack
- DDiscover, Offer, Request, Ack✓
Answer: The DHCP DORA process is Discover, Offer, Request, Acknowledge.
What is the primary purpose of Network Address Translation (NAT)?
- AEncrypt traffic between two remote sites
- BAssign IP addresses and default gateways to hosts dynamically as they join the network
- CResolve domain names to IP addresses by querying a hierarchy of name servers
- DTranslate private addresses to public addresses for Internet access✓
Answer: NAT translates private RFC 1918 addresses to public addresses, conserving public IPv4 space.
Which NAT variation maps many private addresses to a single public address using different port numbers?
- APAT (NAT overload)✓
- BStatic NAT
- CTwice NAT
- DDynamic NAT
Answer: Port Address Translation (PAT), or NAT overload, multiplexes many inside hosts onto one public IP using unique source ports.