IPA FE Subject A 2023 Question 8
A question IPA Japan published in 令和５年度 基本情報技術者試験 科目A 公開問題 問8, translated into English. ITPEC is based on the same exams.
In an IPv4 network, which of the following is used for checking network connectivity?
Explanation
ping — it sends ICMP Echo Request messages to a host and waits for Echo Reply messages, which shows whether the host can be reached over the network.
Each reply confirms that packets reach the destination and come back, so ping is the standard tool for checking connectivity on an IPv4 network; the round-trip times it reports also hint at delay and packet loss on the path.
Answer (d)
Why not others:
- •(a) BOOTP — the Bootstrap Protocol, which lets a host obtain its IP address and boot information from a server at start-up; it is the predecessor of DHCP
- •(b) DHCP — assigns IP addresses and other settings (subnet mask, default gateway, DNS server) to hosts automatically
- •(c) MIB — the Management Information Base, the set of managed objects that SNMP reads and writes on network devices; a data definition, not a test tool
Key rule: ping (ICMP echo) checks reachability and traceroute shows the route; DHCP and BOOTP hand out addresses, and SNMP with its MIB monitors devices.
Networks · AI-written, may contain errors
This question comes from the past questions IPA Japan publishes, translated into English by ITPEC Practice. ITPEC Practice is an independent study tool and is not affiliated with IPA or ITPEC. See the original paper (PDF) or Report an issue.