1.0 Network Fundamentals 200-301 Practice Quiz

• A. Routers forward packets between IP networks, choose paths using routing information, and separate broadcast domains.
• B. Layer 2 switches forward Ethernet frames within a LAN using MAC address learning and a MAC address table.
• C. Layer 3 switches combine switching with routing functions so they can route between VLANs or IP networks.
• D. Controllers centralize management, policy, and control for devices such as wireless access points or software-defined network components.

Routers forward packets between IP networks, choose paths using routing information, and separate broadcast domains. This is the correct answer.

• A. Access points provide wireless client connectivity and bridge wireless clients into the wired network.
• B. Layer 2 switches forward Ethernet frames within a LAN using MAC address learning and a MAC address table.
• C. Power over Ethernet supplies electrical power and data over Ethernet cabling to devices such as access points, phones, and cameras.
• D. A two-tier topology commonly uses access and distribution/core layers, reducing design complexity for smaller networks.

Layer 2 switches forward Ethernet frames within a LAN using MAC address learning and a MAC address table. This is the correct answer.

• A. Spine-leaf topology is the best match when the scenario requires this behavior: A spine-leaf topology connects every leaf switch to every spine switch to provide predictable east-west traffic paths.
• B. Routers is the best match when the scenario requires this behavior: Routers forward packets between IP networks, choose paths using routing information, and separate broadcast domains.
• C. WAN topology is the best match when the scenario requires this behavior: A WAN topology connects networks across geographically separated sites using service provider, VPN, or private connectivity.
• D. SOHO topology is the best match when the scenario requires this behavior: A small office/home office topology usually combines routing, switching, wireless, and internet edge functions in a simple design.

Routers forward packets between IP networks, choose paths using routing information, and separate broadcast domains. This fits the network scenario without confusing the device role, protocol behavior, addressing concept, or physical connection involved. This is the correct answer.

• A. Ethernet shared media is the best match when the scenario requires this behavior: Ethernet shared media means multiple devices share the same communication medium, increasing contention compared with switched point-to-point links.
• B. Point-to-point Ethernet is the best match when the scenario requires this behavior: Point-to-point Ethernet connects two devices directly over a dedicated link.
• C. Layer 2 switches is the best match when the scenario requires this behavior: Layer 2 switches forward Ethernet frames within a LAN using MAC address learning and a MAC address table.
• D. Interface collisions is the best match when the scenario requires this behavior: Collisions occur when devices contend for a shared medium and indicate legacy half-duplex or shared-media behavior.

Layer 2 switches forward Ethernet frames within a LAN using MAC address learning and a MAC address table. This fits the network scenario without confusing the device role, protocol behavior, addressing concept, or physical connection involved. This is the correct answer.

• A. UDP is the best match when the scenario requires this behavior: UDP is connectionless, has less overhead than TCP, and does not provide built-in reliability or acknowledgments.
• B. IPv4 addressing is the best match when the scenario requires this behavior: IPv4 addressing identifies hosts and networks using 32-bit addresses and subnet masks.
• C. IPv4 subnetting is the best match when the scenario requires this behavior: IPv4 subnetting divides a larger network into smaller networks by borrowing host bits for network identification.
• D. Layer 3 switches is the best match when the scenario requires this behavior: Layer 3 switches combine switching with routing functions so they can route between VLANs or IP networks.

Layer 3 switches combine switching with routing functions so they can route between VLANs or IP networks. This fits the network scenario without confusing the device role, protocol behavior, addressing concept, or physical connection involved. This is the correct answer.

• A. A scenario points to Duplex mismatch when the network evidence depends on this distinction: A duplex mismatch occurs when one side of a link uses full duplex and the other side uses half duplex, often causing late collisions and poor performance.
• B. A scenario points to Speed mismatch when the network evidence depends on this distinction: A speed mismatch occurs when link partners are not operating at compatible speeds, often causing link failure or negotiation problems.
• C. A scenario points to Routers when the network evidence depends on this distinction: Routers forward packets between IP networks, choose paths using routing information, and separate broadcast domains.
• D. A scenario points to TCP when the network evidence depends on this distinction: TCP is connection-oriented, provides sequencing and acknowledgments, and supports reliable delivery.

Routers forward packets between IP networks, choose paths using routing information, and separate broadcast domains. This distinction matters because the wrong concept would lead to the wrong verification step, forwarding expectation, or troubleshooting path. This is the correct answer.

• A. A scenario points to IPv6 addressing when the network evidence depends on this distinction: IPv6 addressing identifies interfaces using 128-bit addresses and prefix lengths.
• B. A scenario points to IPv6 global unicast when the network evidence depends on this distinction: IPv6 global unicast addresses are publicly routable IPv6 addresses used for communication across the internet.
• C. A scenario points to IPv6 unique local when the network evidence depends on this distinction: IPv6 unique local addresses are private IPv6 addresses intended for internal use within an organization or site.
• D. A scenario points to Layer 2 switches when the network evidence depends on this distinction: Layer 2 switches forward Ethernet frames within a LAN using MAC address learning and a MAC address table.

Layer 2 switches forward Ethernet frames within a LAN using MAC address learning and a MAC address table. This distinction matters because the wrong concept would lead to the wrong verification step, forwarding expectation, or troubleshooting path. This is the correct answer.

• A. IPv6 multicast is the correct operational interpretation when the forwarding, addressing, topology, or verification decision depends on this exact meaning: IPv6 multicast sends traffic to a group of interested receivers instead of broadcasting to all hosts.
• B. Client IP parameters is the correct operational interpretation when the forwarding, addressing, topology, or verification decision depends on this exact meaning: Client IP parameters include address, subnet mask or prefix, default gateway, DNS servers, and related network settings.
• C. Nonoverlapping Wi-Fi channels is the correct operational interpretation when the forwarding, addressing, topology, or verification decision depends on this exact meaning: Nonoverlapping Wi-Fi channels reduce co-channel interference by using channels whose frequencies do not overlap.
• D. Routers is the correct operational interpretation when the forwarding, addressing, topology, or verification decision depends on this exact meaning: Routers forward packets between IP networks, choose paths using routing information, and separate broadcast domains.

Routers forward packets between IP networks, choose paths using routing information, and separate broadcast domains. This applies the concept at the point where a Cisco administrator must predict network behavior or choose the correct operational interpretation. This is the correct answer.