Chapter 4

Which type of transmission does a switch use when the destination MAC address is not contained in the MAC address table? 1. Anycast 2. Unicast 3. Broadcast 4. Multicast

3

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 design make it the better choice? (Choose two) 1. Reduced cost for equipment and user training 2. Less required equipment to provide the same performance levels 3. Simple deployment for additional switch equipment 4. Easier to provide redundant links to ensure higher availability 5. Lower bandwidth requirements

3, 4

What are two advantages of modular switcher over fixed-configuration switches (choose two) 1. Availability of multiple ports for bandwidth aggregation 2. Lower forwarding rates 3. Need for fewer power outlets 4. Lower cost per switch 5. Increased scalability

3, 5

ABC, Inc. has about fifty hosts in one LAN. The administrator would like to increase the throughput of that LAN. Which device will increase the number of collision domains and thereby increase the throughput of the LAN? 1. Hub 2. Host 3. NIC 4. Switch

4

Refer to the exhibit. Consider that the main power has just been restored. PC1 asks the DHCP server for IPv4 addressing. The DHCP server sends it an IPv4 address. While PC2 is still booting up, PC3 issues a broadcast IPv4 DHCP request. To which port will SW1 forward this request? 1. To Fa0/1, Fa0/2, and Fa0/4 only 2. To Fa0/1, Fa0/2, Fa0/3, and Fa0/4 3. To Fa0/1 and Fa0/2 only 4. To Fa0/1, Fa0/2, and Fa0/3 only 5. To Fa0/1 only

4

What does the term "port density" represent for an Ethernet switch? 1. The numbers of hosts that are connected to each switch port 2. The speed of each port 3. The memory space that is allocated to each switch port 4. The number of available ports

4

What is a basic function of the Cisco Borderless Architecture access layer? 1. Aggregates Layer 3 routing boundaries 2. Provides high availability 3. Aggregates Layer 2 broadcast domains 4. Provides access to the user

4

What is one function of a Layer 2 switch 1. Forwards data based on logical addressing 2. Learns the port assigned to a host by examining the destination MAC address 3. Duplicates the electrical signal of each frame to every port 4. Determines which interface is used to forward a frame based on the destination MAC address

4

What tool is important for use when making hardware improvement decisions about switches? 1. Switched virtual interface 2. Authentication servers 3. Multilayer switching 4. Traffic flow analysis

4

Which statement describes the microsegmentation feature of a LAN switch 1. The switch will not forward broadcast frames 2. All ports inside the switch form one collision domain 3. Frame collision domain 4. Each port forms a collision domain

4

Which type of address does a switch use to build the MAC address table? 1. Destination IP address 2. Source IP address 3. Destination MAC address 4. Source MAC address

4

Which two previously independent technologies should a network administrator attempt to combine after choosing to upgrade to a converged network infrastructure? (Choose two.) 1. Mobile cell phone traffic 2. Scanners and printers 3. Electrical system 4. Analog and VoIP phone traffic 5. User data traffic

4, 5

There are ________ broadcast domains in the topology

5

Refer to the exhibit. How many broadcast domains are displayed?

8

Appropriate for high performance computing applications 1. Cut through 2. Store and forward

1

Forward traffic based on information in the Ethernet header 1. Layer 2 switches 2. Multi-layer switches

1

Forwarding process can begin after receiving the destination address 1. Cut through 2. Store and forward

1

May forward invalid frames (3) 1. Cut through 2. Store and forward

1

Typically used in the access layer of a switched network 1. Layer 2 switches 2. Multi-layer switches

1

What information is added to the switch table from incoming frames? 1. Source MAC address and incoming port number 2. Destination MAC address and incoming port number 3. Destination IP address and incoming port number 4. Source IP address and incoming port number

1

What is a basic function of the Cisco Borderless Architecture distribution layer? 1. Aggregating Layer 3 routing boundaries 2. Aggregating all the campus blocks 3. Acting as a backbone 4. Providing access to the user

1

What is the destination address in the header of a broadcast frame? 1. FF-FF-FF-FF-FF-FF 2. 0.0.0.0 3. 11-11-11-11-11-11 4. 255.255.255.255

1

What is the maximum wire speed of a single port on a 48-port gigabit switch 1. 1000 Mb/s 2. 48 Mb/s 3. 48 Gb/s 4. 100 MB/s

1

When the installation of a network infrastructure is being planned, which technology will allow power to be provide via Ethernet cabling to a downstream switch and its connected devices? 1. PoE pass-thorugh 2. Gigabit Ethernet 3. Wireless APs and VoIP phones 4. PoE

1

What are two reasons a network administrator would segment a network with a Layer 2 switch? (Choose two) 1. To enhance user bandwidth 2. To eliminate virtual circuits 3. To create more broadcast domains 4. To isolate traffic between segments 5. To isolate ARP request messages from the rest of the network 6. To create fewer collision domains

1, 4

There are ___ collision domains in the topology

12

An administrator purchases net Cisco switches that have a feature called StackPower. What is the purpose of this feature 1. It enables many switches to be connected with a special fiber-optic power cable to provide higher bandwidth 2. It enables the sharing of power among multiple stackable switches 3. It enables many switches to be connected to increase port density 4. It enables many switches to be physically stacked in an equipment rack 5. It enables AC power for a switch to be provided from a powered patch panel

2

Can build a routing table 1. Layer 2 switches 2. Multi-layer switches

2

Error checking before forwarding (4) 1. Cut Through 2. Store and Forward

2

Forwarding process only begin after receiving the entire frame (5) 1. Cut through 2. Store and forward

2

Only forward valid frames (6) 1. Cut through 2. Store and forward

2

Supports a few routing protocols 1. Layer 2 switches 2. Multi layer switches

2

What is the definition of a two tier LAN network design? 1. Access, distribution, and core layers collapsed into one tier, with a separate backbone layer 2. Distribution and core layers collapse into one tier, and the access layer on a separate tier 3. Access and distribution layers collapsed into one tier, and the core layer on a separate tier 4. Access and core layers collapsed into one tier, and the distribution layer on a separate tier

2

What two criteria are used by a Cisco LAN switch to decide how to forward Ethernet frames? (Choose two) 1. Path cost 2. Destination MAC address 3. Egress port 4. Ingress port 5. Destination IP address

2, 4

Refer to the exhibit: How is a frame sent from PCA forwarded to PCC if the MAC address table on switch SW1 is empty? 1. 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 2. Sw1 floods the frame on all posts on the switch, excluding the interconnected port to switch SW2 and the port through which the frame entered the switch. 3. SW1 floods the frame on all ports on SW1, excluding the port through which the frame entered the switch 4. Sw1 drops the frame because it does not know the destination MAC address

3

What is a collapsed core in a network design? 1. A combination of the functionality of the access, distribution, and core layers 2. A combination of the functionality of the functionality of the access and core layers 3. A combination of the functionality of the distribution and core layers 4. A combination of the functionality of the access and distribution layers

3

What is one advantage of using the cut-through switching method instead of the store-and-forward switching method? 1. Has a positive impact on bandwidth by dropping most of the invalid frames 2. Makes a fast forwarding decision based on the source MAC address of the frame 3. Has a lower latency appropriate for high-performance computing applications 4. Provides the flexibility to support any mix of Ethernet speeds

3

Which switch form factor should be used when large port density, fault tolerance, and low price are important factors 1. Fixed-configuration switch 2. Modular switch 3. Stackable switch 4. Rackable 1U switch

3

A _____ network is one that uses the same infrastructure to carry voice, data and video signals

Converged