CCNA 2 Chapter 4 Switched Networks Exam Answers (v5.03 + v6.0)
- What does the term “port density” represent for an Ethernet switch?
- the numbers of hosts that are connected to each switch port
- the number of available ports*
- the speed of each port
- the memory space that is allocated to each switch port
- What two criteria are used by a Cisco LAN switch to decide how to forward Ethernet frames? (Choose two.)
- destination IP address
- path cost
- egress port
- destination MAC address*
- ingress port*
- Which network device can be used to eliminate collisions on an Ethernet network?
- What is the destination address in the header of a broadcast frame?
- What is a basic function of the Cisco Borderless Architecture distribution layer?
aggregating Layer 3 routing boundaries*
aggregating all the campus blocks
acting as a backbone
providing access to end user devices
- aggregating Layer 3 routing boundaries aggregating all the campus blocks acting as a backbone providing access to end user devices?
- Match the forwarding characteristic to its type. (Not all options are used.)
- What is one function of a Layer 2 switch?
determines which interface is used to forward a frame based on the destination MAC address
learns the port assigned to a host by examining the destination MAC address
duplicates the electrical signal of each frame to every port
forwards data based on logical addressing
- Refer to the exhibit. How is a frame sent from PCA forwarded to PCC if the MAC address table on switch SW1 is empty?
SW1 floods the frame on all ports on SW1, excluding the port through which the frame entered the switch.*
SW1 drops the frame because it does not know the destination MAC address.
SW1 floods the frame on all ports on the switch, excluding the interconnected port to switch SW2 and the port through which the frame entered the switch.
SW1 forwards the frame directly to SW2. SW2 floods the frame to all ports connected to SW2, excluding the port through which the frame entered the switch.
- What is a collapsed core in a network design?
- a combination of the functionality of the access and distribution layers
- a combination of the functionality of the distribution and core layers*
- a combination of the functionality of the access and core layers
- a combination of the functionality of the access, distribution, and core layers
- What is a definition of a two-tier LAN network design?
- access, distribution, and core layers collapsed into one tier, with a separate backbone layer
- access and distribution layers collapsed into one tier, and the core layer on a separate tier
- distribution and core layers collapsed into one tier, and the access layer on a separate tier*
- access and core layers collapsed into one tier, and the distribution layer on a separate tier
- Which type of address does a switch use to build the MAC address table?
- destination MAC address
- destination IP address
- source MAC address*
- source IP address
- What are two reasons a network administrator would segment a network with a Layer 2 switch? (Choose two.)
- to create fewer collision domains
- to create more broadcast domains
- to eliminate virtual circuits
- to isolate ARP request messages from the rest of the network
- to enhance user bandwidth*
- to isolate traffic between segments*
- A network designer must provide a rationale to a customer for a design which will move an enterprise from a flat network topology to a hierarchical network topology. Which two features of the hierarchical design make it the better choice? (Choose two.)
- less required equipment to provide the same performance levels
- simpler deployment for additional switch equipment*
- easier to provide redundant links to ensure higher availability*
reduced cost for equipment and user training
- lower bandwidth requirements
- A local law firm is redesigning the company network so that all 20 employees can be connected to a LAN and to the Internet. The law firm would prefer a low cost and easy solution for the project. What type of switch should be selected?
- modular configuration
- stackable configuration
- fixed configuration*
- Match the functions to the corresponding layers. (Not all options are used.)Place the options in the following order:
[+] represents the network edge
[+] provides network access to the user
[#] implements network access policy
[#] establishes Layer 3 routing boundaries
[*] provides high-speed backbone connectivity
[*] functions as an aggregator for all the campus blocks
- Match the borderless switched network guideline description to the principle. (Not all options are used.)Place the options in the following order:
- allows intelligent traffic load sharing by using all network resources [flexibility]
- facilitates understanding the role of each device at every tier, simplifies deployment, operation, management, and reduces fault domains at every tier [hierarchical]
- allows seamless network expansion and integrated service enablement on an on-demand basis [modularity]
- satisfies user expectations for keeping the network always on [resiliency]
- Refer to the exhibit. How many broadcast domains are displayed?
- Which solution would help a college alleviate network congestion due to collisions?
- a router with two Ethernet ports
- a firewall that connects to two Internet providers
- a high port density switch*
- a router with three Ethernet ports
- What are two advantages of modular switches over fixed-configuration switches? (Choose two.)
need for fewer power outlets*
lower forwarding rates
availability of multiple ports for bandwidth aggregation
lower cost per switch
- Which two previously independent technologies should a network administrator attempt to combine after choosing to upgrade to a converged network infrastructure? (Choose two.)
- mobile cell phone traffic
- scanners and printers
- user data traffic*
- VoIP phone traffic*
- electrical system
- Which network device can serve as a boundary to divide a Layer 2 broadcast domain?
- access point
- Ethernet hub
- Ethernet bridge
- Refer to the exhibit. Consider that the main power has just been restored. PC3 issues a broadcast IPv4 DHCP request. To which port will SW1 forward this request?
- to Fa0/1 and Fa0/2 only
- to Fa0/1 only
- to Fa0/1, Fa0/2, Fa0/3, and Fa0/4
- to Fa0/1, Fa0/2, and Fa0/3 only*
to Fa0/1, Fa0/2, and Fa0/4 only
- A small publishing company has a network design such that when a broadcast is sent on the LAN, 200 devices receive the transmitted broadcast. How can the network administrator reduce the number of devices that receive broadcast traffic?
- Replace the switches with switches that have more ports per switch. This will allow more devices on a particular switch.
- Add more switches so that fewer devices are on a particular switch.
- Replace at least half of the switches with hubs to reduce the size of the broadcast domain.
- Segment the LAN into smaller LANs and route between them.*
- Which statement describes a result after multiple Cisco LAN switches are interconnected?
The broadcast domain expands to all switches.*
Frame collisions increase on the segments connecting the switches.
- One collision domain exists per switch.
- There is one broadcast domain and one collision domain per switch.