Free Dell Technologies Networking Foundations Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Dell Technologies Networking Foundations practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1Which information does an Ethernet switch maintain to associate local devices with Layer 2 forwarding entries?

   1. A.MAC addressesCorrect answer: A
   2. B.TCP sequence numbers
   3. C.DNS resource records
   4. D.BGP autonomous-system paths

   Explanation: The guide states, "All Ethernet switching ports maintain media access control (MAC) address tables." A is the Layer 2 table information. TCP sequence numbers track transport streams, DNS records resolve names, and BGP paths describe interdomain routes.

   Reference: Dell EMC SmartFabric OS10 User Guide — Media Access Control, p. 593

2. 2In an Ethernet frame carrying IPv4 according to RFC 894, which hexadecimal EtherType identifies the payload?

   1. A.0800Correct answer: A
   2. B.0806
   3. C.86DD
   4. D.8100

   Explanation: RFC 894 specifies "hexadecimal 0800." 0806 identifies ARP, 86DD IPv6, and 8100 an IEEE 802.1Q tag.

   Reference: RFC 894 IP over Ethernet — Frame Format

3. 3Which IPv4 address belongs to RFC 1918 private address space?

   1. A.172.20.8.9Correct answer: A
   2. B.172.32.8.9
   3. C.192.169.8.9
   4. D.11.20.8.9

   Explanation: RFC 1918 reserves "172.16.0.0 - 172.31.255.255". A lies within that range. B exceeds its upper bound; C is outside 192.168/16, and D is outside 10/8.

   Reference: RFC 1918 Address Allocation for Private Internets — Section 3

4. 4Which OS10 interface command disables DHCP client operation before a manually assigned management IP address is configured?

   1. A.no shutdown
   2. B.no ip address dhcpCorrect answer: B
   3. C.no switchport
   4. D.no ip routing

   Explanation: The guide explicitly says to disable the client with "no ip address dhcp". no shutdown enables an interface, no switchport changes link mode, and no ip routing concerns routing rather than DHCP client behavior.

   Reference: Dell EMC SmartFabric OS10 User Guide — DHCP configuration notes

5. 5An OS10 account must inspect configuration but must not modify any settings. Which documented role fits?

   1. A.sysadmin
   2. B.secadmin
   3. C.netoperatorCorrect answer: C
   4. D.netadmin

   Explanation: The guide says a netoperator "cannot modify any configuration setting on a switch." C is the read-only operational role. The other roles grant configuration capabilities.

   Reference: Dell EMC SmartFabric OS10 User Guide — Configure username and password

6. 6Which command exports the OS10 running configuration to a remote server using SCP?

   1. A.copy running-configuration scp://user:pass@192.0.2.10/backup.txtCorrect answer: A
   2. B.copy scp://user:pass@192.0.2.10/backup.txt running-configuration
   3. C.show running-configuration
   4. D.copy running-configuration startup-configuration

   Explanation: The guide documents "copy running-configuration" with an SCP destination. A exports the file. B reverses transfer direction, C displays it locally, and D saves to local startup configuration.

   Reference: Dell EMC SmartFabric OS10 User Guide — Copy running configuration to local directory or remote server

7. 7Which capability best describes the role of SmartFabric Services in OS10?

   1. A.Manual device-by-device configuration through CLI sessions
   2. B.Manual configuration-file transfer to each switch
   3. C.Automated fabric configuration and programmable APIsCorrect answer: C
   4. D.Per-device configuration through independent Linux shell scripts

   Explanation: The guide calls SFS "an application suite that provides network fabric automation and API-based programmability." C is the integrated fabric function. A/B/D describe separate device-level administration methods rather than SFS fabric orchestration.

   Reference: Dell EMC SmartFabric OS10 User Guide — SmartFabric Services overview

8. 8An IPv4 router must forward a packet whose destination is not directly reachable. What decision must it make?

   1. A.Which application owns the destination socket
   2. B.Which next-hop router should receive the packetCorrect answer: B
   3. C.Which DNS server registered the destination name
   4. D.Which Ethernet duplex mode the remote host uses

   Explanation: RFC 1812 states that a router determines whether it can send directly or "whether it needs to pass it through another router." B identifies the forwarding decision. Application ownership, DNS registration and remote duplex are not next-hop selection criteria.

   Reference: RFC 1812 Requirements for IP Version 4 Routers — Section 5.2.4

9. 9A short IPv4 datagram needs padding for Ethernet transmission. What minimum Ethernet data-field length does RFC 894 specify?

   1. A.20 octets
   2. B.46 octetsCorrect answer: B
   3. C.64 octets
   4. D.1500 octets

   Explanation: The RFC states, "The minimum length of the data field of a packet sent over an Ethernet is 46 octets." Twenty is a minimum IPv4 header length, 64 concerns a minimum complete Ethernet frame, and 1500 is a normal maximum payload.

   Reference: RFC 894 IP over Ethernet — Frame Format

10. 10What property distinguishes the public addresses described by RFC 1918 from independently reused private addresses?

    1. A.They are unique only within a VLAN
    2. B.They are globally unambiguousCorrect answer: B
    3. C.They are reused independently in every enterprise
    4. D.They identify only a local link

    Explanation: RFC 1918 requires public hosts to use addresses "globally unambiguous." B gives Internet-wide uniqueness; A/D limit uniqueness to smaller scopes and C describes independent private-address reuse.

    Reference: RFC 1918 Address Allocation for Private Internets — Section 2, Category 3