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Cisco Certified Network Associate (CCNA) IP Services Flashcards
65 question-and-answer cards covering IP Services as it is examined in Cisco Certified Network Associate (CCNA). 24 of them are printed below, taken from across the deck — no signup, no paywall on the preview.
24 sample cards from the IP Services deck
Sampled from the end of the deck, so these are different cards from the ones shown on the syllabus page.
What is the difference between an SNMP 'get' and an SNMP 'trap'?
A get is initiated by the manager polling the agent for data; a trap is an unsolicited message sent by the agent to alert the manager of an event.
Why is SNMPv3 preferred over v1 and v2c?
SNMPv3 adds security: authentication, message integrity, and encryption, whereas v1/v2c rely only on plaintext community strings.
What is the role of DHCP?
Dynamic Host Configuration Protocol automatically assigns IP addresses and related parameters (mask, default gateway, DNS) to hosts, reducing manual configuration.
What are the four DHCP message exchange steps (DORA)?
Discover, Offer, Request, Acknowledge.
What transport ports does DHCP use?
UDP port 67 (server) and UDP port 68 (client).
Why are DHCP Discover messages sent as broadcasts?
Because the client has no IP address yet and does not know the server's address, so it broadcasts to reach any available DHCP server.
What feature lets a router forward DHCP broadcasts to a server on a different subnet?
A DHCP relay agent, configured with the 'ip helper-address <server-ip>' command on the client-facing interface.
What command excludes addresses from being handed out by a Cisco DHCP server?
ip dhcp excluded-address <start> <end> (in global config).
What is the role of DNS?
The Domain Name System resolves human-readable hostnames (e.g., www.cisco.com) into IP addresses so hosts can communicate.
What transport protocol and port does DNS primarily use for queries?
UDP port 53 for standard queries (TCP 53 for zone transfers and large responses).
Describe the DNS resolution process when a name is not cached.
The resolver queries a recursive DNS server, which queries the root server, then the TLD server, then the authoritative server, returning the IP back down the chain to the client.
What command configures a Cisco device to use a DNS server for name resolution?
ip name-server <ip-address> (and ip domain-lookup must be enabled).
On a Windows PC, which command verifies the IP address, mask, and gateway received from DHCP?
ipconfig (use ipconfig /all to also see DNS and DHCP server details).
Which Windows commands release and renew a DHCP-assigned address?
ipconfig /release and ipconfig /renew.
What does QoS (Quality of Service) provide in a network?
Mechanisms to manage congestion by classifying, marking, queuing, and prioritizing traffic so latency-sensitive flows (voice/video) get preferential forwarding treatment.
What is Per-Hop Behavior (PHB) in QoS?
The forwarding treatment (queuing, dropping, scheduling) that each individual router applies to a packet based on its QoS marking, independently at every hop.
What is a QoS trust boundary?
The point in the network where QoS markings from endpoints are accepted as valid; markings from untrusted devices beyond it are ignored or remarked, typically placed at the access layer.
Which header field carries QoS markings in an IP packet, and what is the DSCP?
The Type of Service (ToS) byte; DSCP (Differentiated Services Code Point) uses its 6 high-order bits to classify traffic into per-hop behaviors.
What is the difference between classification and marking in QoS?
Classification identifies and groups traffic into classes; marking sets a field value (e.g., DSCP or CoS) on the packet so downstream devices can apply the proper PHB.
Which QoS tools address congestion management versus congestion avoidance?
Congestion management uses queuing/scheduling (e.g., CBWFQ, LLQ) when congestion occurs; congestion avoidance uses dropping (e.g., WRED) to prevent queues from overflowing.
What is the purpose of TFTP and what transport/port does it use?
Trivial File Transfer Protocol performs simple file transfers (e.g., IOS images, configs) with no authentication, using UDP port 69.
What is the purpose of FTP and what transport/ports does it use?
File Transfer Protocol transfers files with authentication and directory operations, using TCP ports 20 (data) and 21 (control).
What are the key differences between TFTP and FTP?
TFTP is UDP-based, has no authentication, and is lightweight for simple transfers; FTP is TCP-based, supports authentication and richer commands, and is more reliable.
What Cisco command backs up the running configuration to a TFTP server?
copy running-config tftp (then supply the TFTP server IP and destination filename).
What this deck covers
The IP Services deck follows the Cisco Certified Network Associate (CCNA) IP Services syllabus — 4 chapters and 13 topics — so questions land on material that is genuinely examinable rather than trivia around it. That works out to roughly 16.3 cards per chapter.
Answers are written to be recallable, not just readable — averaging about 120 characters, which is long enough to carry the reasoning and short enough to say out loud.
A deck like this earns its keep on the second and third pass. Read the syllabus first so you know the shape of the subject, then use the cards to find the specific facts that have not stuck.
IP Services flashcards FAQ
How many IP Services flashcards are in this Cisco Certified Network Associate (CCNA) deck?
65 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these Cisco Certified Network Associate (CCNA) flashcards free?
Yes. The preview here is free to read with no signup, and the full 65-card deck is free inside the Examius app.
What do the IP Services cards cover?
They follow the Cisco Certified Network Associate (CCNA) IP Services syllabus — 4 chapters and 13 topics — so the questions track what is actually examinable.
How should I use these flashcards?
Read the syllabus first so you know the shape of the subject, then drill the deck. Examius schedules each card with spaced repetition, so cards you keep missing come back sooner and ones you know drift further apart.