Where does a collision domain exist in a switched network?
A.
Where does a broadcast domain exist in a switched network?
C.
What is a VLAN primarily used for?
A.
How many layers are recommended in the hierarchiacal campus network design model?
E.
What is the purpose of breaking a campus network into a hierarchical design?
C.
End-user PCs should be connected into which of the following hirearchical layer?
C.
In which OSI layer should devices in the distro layer typically operate?
D.
A hierarchical network's distro layer aggregates which of the following?
A.
In the core layer of a hierarchical network, which of the following are aggregated?
D.
In a properly designed hierarchical network, a broadcast from one PC is confined to what?
A.
Which one of the following are the components of a typical switch block?
a. access-layer switches
b. distro-layer switches
c. core-layer switches
d. E-commerce servers
e. service provider switches
a & b
What are two types of core, or backbone, designs?
a. collapsed core
b. loop-free core
c. dual core
d. layer core
a & c
What is the maximum number of access-layer switches that can connect into a single distro layer switch?
B.
A switch block should be sized according to which two of the following parameters?
a. the number of access-layer users
b. a max of 250 access-layer users
c. a study of the traffic patterns and flows
d. the amount of rack space available
e. the number of servers accessed by the users
a & c
What evidence can be seen when a switch block iw too large? (choose all that apply)
a. IP address space is exhausted
b. you run out of access-layer ports
c. broadcast traffic becomes excessive
d. traffic is throttled at the distro-layer switches
e. network congestion occurs
c, d, & e
How many distro switches should be built into each switch block?
C.
What are the most important aspects to consider when designing the core layer in a large network? (choose all that apply)
a. low cost
b. switches that can efficiently forward traffic, even when every uplink is at 100 % capacity
c. high port density of high-speed ports
d. a low number of layer 3 routing peers
b & c
what is the benefit if using a hierarchical approach to network design?
It organizes the network into distinct layers that makes the network:
efficient
intelligent
scalable
easily managed.
what are the capabilities of the Access layer switches?
1. low cost per switch port
2. high port density
3. scalable uplinks to higher layers
4. user access functions such as VLAN membership, traffic and protocol filtering, and QOS
5. resiliency through multiple uplinks
what are the capabilities of the Distribution layer switches?
1. aggregation of multiple access-layer devices
2. high layer 3 throughput for packet handling
3. security and policy-based connectivity functions through access lists or packet filters
4. scalable and resilient high-speed links to the core and access layers
what are the capabilities of the Core layer switches?
1. very high throughput at layer 3
2. no costly or unnecessary packet manipulations (ACL's or Packet Filtering)
3. redundancy and resilience for high availability
4. advanced QOS functions
describe switch block redundancy.
two access layer switches, each connected to one or more distro layer switches.
What is the best practice designs for switch blocks? (L2 and L3 traffic)
L2 traffic should be contained in the access layer, and L3 traffic is in the distro and core layers.
what are the 2 core block designs?
collapsed core, and dual core.
dual core is a separate 2 sw design separate from the switch block.
collapsed core is where the distro switches also work as the core in smaller networks, providing core functionality between switch blocks.
