Controls Which End Devices Are Allowed To

Controls Which End Devices Are Allowed To

Question 33tco 1 Controls Which End Devices Are Allowed To

Question 33tco 1 Controls Which End Devices Are Allowed To

Question 3. 3. (TCO 1) _____ control(s) which end devices are allowed to communicate on the network. (Points : 5) The access layer Business goals Collapsed core Convergence Question 4. 4. (TCO 1) _____ will determine the design requirements for a network. (Points : 5) Business goals Personal preference Location None of the above Question 5. 5. (TCO 1) Which of the following illustrates properly designed hierarchical networks that achieve near-wire speed among all devices? (Points : 5) Collapsed core Convergence The core layer Performance Question 6. 6. (TCO 2) Startup configuration is stored in ________. (Points : 5) ROM PRAM NVRAM Flash Question 7. 7. (TCO 2) The average amount of data that is actually transmitted as opposed to the rating of the port is _____. (Points : 5) source MAC address switch fabric throughput unicast transmission Question 8. 8. (TCO 2) _____ is a Layer 2 identifier for the frame's originating NIC or interface. (Points : 5) Propagation delay Source MAC address Switch fabric Throughput Question 9. 9. (TCO 2) _____ is a dedicated connection between two hosts. (Points : 5) Half-duplex communication Latency Microsegment Multicast transmission Question 10. 10. (TCO 2) A _____ is a frame that is sent from one host and addressed to one specific destination. (Points : 5) source MAC address switch fabric throughput unicast transmission Question 11. 11. (TCO 3) Extended-range VLANs are identified by a VLAN ID between which of the following ranges? (Points : ,000-9,000 1,006-4,094 1,006-2,094 1,000-4,094 Question 12. 12. (TCO 3) A _____ VLAN is a VLAN that is configured to carry only user-generated traffic. These VLANs are sometimes referred to as user VLANs. (Points : 5) data default native none of the above Question 13. 13. (TCO 3) Which VLANs are allowed over the link when a new trunk link is configured on an IOS-based switch? (Points : 5) All defined VLANs are allowed on the trunk by default. Each VLAN, or VLAN range, that is specified with the switchport mode command Each VLAN, or VLAN range, that is specified with the vtp domain command Each VLAN, or VLAN range, that is specified with the VLAN database command Question 14. 14. (TCO 3) Which would not be one of the characteristics of a typical VLAN? (Points : 5) VLANs logically divide a switch into multiple, independent switches at Layer 2. Trunk links can carry traffic for multiple VLANs. VLAN implementation significantly increases traffic due to added trunking information. A VLAN can span multiple switches. Question 15. 15. (TCO 3) Which of the following configures the port to negotiate a trunk? (Points : 5) Switchport mode trunk Switchport mode dynamic desirable Switchport nonegotiate Switchport mode access 1. (TCO 3) Which of the following best describes the mapping between VLANs and IP subnets in a modern switched network? (Points : 5) One VLAN to many IP subnets One IP subnet to one VLAN One IP subnet to many VLANs Varies with the model of Cisco Catalyst switch Question 2. 2. (TCO 3) Which of following VLAN frame encapsulation types are configurable on a Cisco switch? (Points : 5) VTP 802.1Q LLC None of the above Question 3. 3. (TCO 4) Which of the following depicts a VTP domain? (Points : 5) Switches share VLAN information; the boundary is defined by a Layer 3 device. It can only create, delete, and modify local VLANs. It advertises VLAN configuration information and can create, delete, and modify VLANs. It restricts broadcast traffic to those trunks that must be used to reach the destination devices. Question 4. 4. (TCO 4) A _____ stores VLAN information only in RAM. (Points : 5) VTP client VTP domain VTP pruning VTP server Question 5. 5. (TCO 4) Which VTP mode should a Cisco switch be set to if this switch is to add or delete VLANs to a management domain? (Points : 5) Transparent Server Auto Client Question 6. 6. (TCO 5) Which of the following is the closest to the root bridge? (Points : 5) Root port Spanning Tree Protocol Spanning-tree algorithm Switch diameter Question 7. 7. (TCO 5) What is the time spent in the listening and learning states called? (Points : 5) Forward delay Forwarding state Hello time Learning state Question 8. 8. (TCO 5) The time between each BPDU sent on a port is called which of the following? (Points : 5) Forwarding state Hello time Learning state Listening state Question 9. 9. (TCO 5) A term for when the port is administratively shut down is _____. (Points : 5) designated ports disabled state forward delay forwarding state Question 10. 10. (TCO 5) In the _____ state, the MAC address table is built but does forward user data frames. (Points : 5) forwarding hello time learning listening Question 11. 11. (TCO 5) Which contains a priority value and the MAC address? (Points : 5) Bridge priority Bridge protocol data unit Designated ports Bridge ID Question 12. 12. (TCO 6) VLAN is a logical group of ports, usually belonging to _____ to control the size of the broadcast domain. (Points : 5) a single IP subnet multiple IP subnets either a single IP subnet or to multiple IP subnets none of the above Question 13. 13. (TCO 6) Which command is used to determine whether inter-VLAN communication is functioning? (Points : 5) show vlan ping ipconfig show interface Question 14. 14. (TCO 6) Inter-VLAN routing _____ additional subnet broadcast addresses. (Points : 5) requires does not require sometimes requires none of the above Question 15. 15. (TCO 6) How many physical interfaces are required to perform inter-VLAN routing with traditional inter-VLAN routing? (Points : 5) One port per VLAN Two ports per VLAN Four ports per VLAN No physical interface per VLAN

Paper For Above instruction

Understanding the fundamental concepts of network controls and device management is essential for designing and maintaining efficient networks. This paper explores various aspects such as access controls, network hierarchy, VLAN configuration, spanning tree protocols, and inter-VLAN routing, aiming to provide a comprehensive overview based on the provided questions.

Network Control and Design Principles

The control of which end devices are permitted to communicate within a network primarily falls under the responsibility of access control mechanisms implemented at the access layer. The access layer serves as the first boundary for network segmentation, enabling administrators to specify device permissions and enforce security policies (Cisco, 2020). Proper network design relies heavily on understanding business goals, which shape the topology, scalability, and security requirements. Hierarchical network models facilitate scalability and performance, minimizing bottlenecks by distributing functions across core, distribution, and access layers (Kurose & Ross, 2017).

Specifically, a well-designed hierarchical network achieves near-wire speed by segmenting traffic efficiently and employing high-performance switches and routers at each layer (Tanenbaum & Wetherall, 2011). The core layer acts as a high-speed backbone, reducing delays and supporting large-scale data transfer with minimal latency.

Device Storage and Data Transmission

Startup configurations on network devices are stored in non-volatile memory such as NVRAM, allowing devices to retain their configurations after power cycles. The actual data transmission compares the effective data throughput with the port ratings, highlighting that the achieved throughput is often lower due to network overhead and protocol inefficiencies (Odom, 2014). Layer 2 identifiers, like the Source MAC address, are used to ensure proper frame forwarding and source identification, critical for switch operations (Hucaluck, 2020).

Dedicated connections between hosts, often in the form of microsegments, facilitate high-speed data exchanges isolated from other network traffic. Unicast transmissions, where frames are destined for precise devices, exemplify typical communication in LAN environments (Forouzan, 2012).

VLANs - Configuration, Range, and Characteristics

Extended-range VLANs use VLAN IDs between 1006 and 4094, allowing larger broadcast domains or segmentation based on organizational needs. User VLANs, or data VLANs, carry specific user-generated traffic, distinguishing them from native or default VLANs (Cisco, 2020). When configuring trunk links on switches, all defined VLANs are permitted by default unless explicitly restricted. Characteristics of VLANs include logical segmentation that enables multiple virtual switches within a physical switch, improving management and security (Lammle, 2016). The port mode command, such as switchport mode trunk, enables trunk negotiation—allowing switches to carry multiple VLAN traffic over a single link.

The modern mapping of VLANs to IP subnets generally follows a one-to-one model, where each VLAN corresponds to a specific subnet, simplifying routing and segmentation (Odom, 2014). VLAN encapsulation on Cisco switches can be configured with 802.1Q, an industry-standard encapsulation method that tags frames with VLAN identifiers.

VTP Domains and Spanning Tree Protocols

VLAN Trunking Protocol (VTP) is a key feature for managing VLAN information across switches. A VTP domain is a logical grouping where switches share VLAN configurations, typically via advertising VLAN updates over trunks. The boundary of a VTP domain is defined by the switches within the Layer 2 network that participate in VTP (Cisco, 2020). VTP operates in modes such as server, client, and transparent—where the server mode allows managing VLANs centrally, and the client mode receives updates (Lammle, 2016).

The root bridge in a spanning tree topology is the switch with the lowest bridge priority, functioning as the central reference point for path calculations. Spanning Tree Protocol (STP) ensures loop-free topology by blocking redundant links and facilitating network resilience. Transitioning through listening and learning states allows switches to stabilize before forwarding data, with BPDU exchanges maintaining topology consistency (Tanénbaum & Wetherall, 2011).

In traditional inter-VLAN routing, each VLAN requires its interface, with the minimum being one physical port per VLAN on routers or multilayer switches. This setup involves multiple subinterfaces, each configured with specific VLAN IDs, to handle traffic routing between VLANs effectively.

Conclusion

Mastering the concepts of network controls—ranging from device permissions, VLAN configurations, spanning tree states, to inter-VLAN routing—is fundamental for network engineers seeking to develop efficient, secure, and scalable networks. The proper implementation of hierarchical design, VLAN segmentation, and routing protocols enhances network performance and resilience, ensuring seamless communication across different devices and segments (Kurose & Ross, 2017).

References

  • Cisco. (2020). Cisco Networking Academy: Introduction to Networks. Cisco Press.
  • Forouzan, B. (2012). Data Communications and Networking. McGraw-Hill Education.
  • Hucaluck, K. (2020). Switches and MAC Address Management. Journal of Network Systems, 45(3), 215-228.
  • Lammle, T. (2016). Cisco CCNA Routing and Switching 200-125. Sybex.
  • Kurose, J. F., & Ross, K. W. (2017). Computer Networking: A Top-Down Approach. Pearson.
  • Odom, W. (2014). CCNA Routing and Switching 200-120 Official Cert Guide. Cisco Press.
  • Tanenbaum, A. S., & Wetherall, D. J. (2011). Computer Networks. Pearson.

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