200-301 CCNA · Cisco · Network Fundamentals · Bank updated 2026-11-03
200-301 CCNA practice questions: Network Fundamentals
5 free questions from 28 on this area · answer and explanation for each · no sign-up
These 5 questions come from the Network Fundamentals section of our 200-301 CCNA bank (28 questions on this area, which carries 20% of the real exam). Every question is original, with the correct answer explained and linked to the source it is drawn from.
Free: 6 questions in study mode, no card. All 28 Network Fundamentals questions and the full 200-301 CCNA bank: $15 one-time.
1/5 · Network Fundamentals · easy
A host interface carries the address FE80::2A0:C9FF:FE12:3456. How does a router treat a packet whose source or destination is that address?
AIt forwards the packet anywhere inside the organization but not out toward the Internet.
BIt does not forward the packet off the link on which it was received.
CIt forwards the packet globally toward the owner of the interface identifier.
DIt replicates the packet to each node attached to the segment.
Answer: B. Topic 1.9.a. RFC 4291 lists the type prefixes: multicast FF00::/8, link-local unicast FE80::/10 (binary 1111111010), and global unicast for everything else; anycast addresses are taken from the unicast space and are not syntactically distinguishable. Section 2.5.6 adds that link-local addresses are for use on a single link, for purposes such as automatic address configuration and neighbor discovery, and that routers must not forward packets with link-local source or destination addresses to other links. Unique local addresses (FC00::/7, RFC 4193) are the type that is routed inside a site but not on the Internet.
Source: Cisco 200-301 CCNA v1.1 Exam Topics - Section 1: Network Fundamentals
2/5 · Network Fundamentals
A sensor gateway sends a 200-byte reading to a collector 20 times per second. The collector displays only the newest value on an operator wall board, and a reading that reaches the board a second late is worth nothing to the operator. The design team has to pick the transport for this traffic. Which transport-layer behavior makes UDP the right choice here?
AUDP numbers each datagram and re-orders the stream at the receiver, leaving the repeat to the application.
BUDP opens the session with a three-way handshake and then stops acknowledging the data it carries.
CUDP advertises a receive window that paces the sender and holds back bursts of readings.
DUDP hands each datagram to the network on its own, with no setup, acknowledgement or repeat attempt.
Answer: D. Topic 1.5. RFC 768 says UDP is transaction oriented and that delivery and duplicate protection are not guaranteed, adding that applications requiring ordered reliable delivery should use TCP instead. Sequence numbers, acknowledgements, retransmission and the sliding receive window are TCP services (RFC 9293), and they are what would delay newer readings behind an older lost one. For telemetry where the freshest sample matters and loss is tolerable, the absence of those services is the feature.
Source: Cisco 200-301 CCNA v1.1 Exam Topics - Section 1: Network Fundamentals
3/5 · Network Fundamentals
A backup server transmits for a few minutes each night and then stays silent for hours. During the silent periods, monitoring shows frames addressed to that server arriving on every port of its VLAN, and the server's MAC address is missing from show mac address-table. The switch runs default settings and the server's port is up the whole time. What causes this behavior?
APort security deleted the learned address when the server stopped sending traffic.
BThe switch dropped its entry when the ARP entry for the server expired on the router.
CThe dynamic entry aged out after 300 seconds without traffic from that address on the port.
DThe table evicts its oldest entry whenever a new address is learned on a port.
Answer: C. Topic 1.13.a and 1.13.d. The Cisco command reference for mac address-table aging-time gives a default of 300 seconds, a range of 0 or 5 to 1000000 seconds, and says aging time is counted from the last time that the switch detected the MAC address; entering 0 disables aging. A host that receives traffic but never sends stops refreshing its entry, so after the timer expires the address disappears from the table and every frame addressed to it is flooded in its VLAN until the host transmits again and is relearned.
Source: Cisco 200-301 CCNA v1.1 Exam Topics - Section 1: Network Fundamentals
4/5 · Network Fundamentals · hard
Three routers have interfaces on the IPv6 link 2001:DB8:AC10:5::/64. A management station on the same link sends one packet with the destination address 2001:DB8:AC10:5:: and no extension headers. What does IPv6 do with that packet?
AIt is delivered to one of the three routers that have interfaces on the link.
BIt is delivered to each of the three routers that have interfaces on the link.
CIt is discarded, an address whose host bits are zero naming the link rather than a node.
DIt is delivered to the router that holds the lowest interface identifier on the link.
Answer: A. Topic 1.9.b. RFC 4291 Section 2.6.1, Required Anycast Address, predefines the Subnet-Router anycast address as the subnet prefix followed by an all-zero interface identifier, notes that it is syntactically the same as a unicast address for an interface on the link, and states that packets sent to the Subnet-Router anycast address will be delivered to one router on the subnet and that all routers are required to support it for the subnets to which they have interfaces. Section 2.6 adds the general rule: a packet sent to an anycast address is routed to the nearest interface having that address, according to the routing protocols' measure of distance. For 2001:DB8:AC10:5::/64 the prefix is 64 bits long, so the Subnet-Router anycast address is 2001:DB8:AC10:5:: itself. IPv6 has no broadcast address, and the address that reaches every router on a link is the all-routers multicast group FF02::2, not this one.
Source: Cisco 200-301 CCNA v1.1 Exam Topics - Section 1: Network Fundamentals
5/5 · Network Fundamentals
A company occupies a single building. The access switches on each floor uplink to one pair of switches in the server room. That pair holds the default gateways for every user VLAN, runs the routing protocol towards the WAN routers and the Internet edge, and carries all traffic between floors. There is no other switch layer. In terms of the three-tier campus model, what does the pair in the server room provide?
AThe access layer and the distribution layer together
BThe distribution layer, with the WAN routers acting as the core
CThe core layer, with distribution done by the floor switches
DThe distribution layer and the core layer together
Answer: D. Topic 1.2.a. Two-tier here is the campus model, not the two-layer spine-leaf fabric of a data centre. Cisco's campus design guidance describes the two-tier model, also called collapsed core, as the one in which the distribution and core layers are collapsed into a single layer. It recommends it where there are fewer users or where the campus consists of a single building, so that separate core and distribution layers may not be needed, and notes that the distribution and core layer functions can be collapsed into the two-tier campus model without compromising basic network design principles. The same guide gives the core the job of interconnecting the distribution blocks and tying the campus to the WAN and Internet edge, so the WAN routers are attached to the core rather than forming it. The access layer stays separate in both models, because it is where endpoints attach, so a pair that holds the VLAN gateways and also joins the building to the WAN and Internet edge is the merged distribution and core layer of a two-tier campus.
Source: Cisco 200-301 CCNA v1.1 Exam Topics - Section 1: Network Fundamentals; two-tier model verified at Cisco Borderless Campus 1.0 Design Guide, 'Borderless Campus Design and Deployment Models' ('the distribution and core layers are collapsed into a single layer'), https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Campus/Borderless_Campus_Network_1-0/Borderless_Campus_1-0_Design_Guide/BN_Campus_Models.html
Other 200-301 CCNA areas
The same kind of free sample for every other section of the 200-301 CCNA bank:
Practise 200-301 CCNA with instant feedback
6 free questions in study mode · no card · full 200-301 CCNA bank with area filters and the error log: $15 one-time · no dumps, no ads.
Start 200-301 CCNA free →
ExamDeck is an independent study tool, not affiliated with, endorsed by, or sponsored by Cisco. 200-301 CCNA and related marks are trademarks of their respective owners, used for identification only. Exam facts checked against official Cisco materials (as of November 2026); always confirm current details with the vendor before booking.