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 Module 5

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hh9



Number of posts : 11
Registration date : 2007-11-16

PostSubject: Module 5   Wed Nov 21, 2007 6:07 pm

Which of the following are responsibilities of OSI Layer 2 network devices? (Choose three.)

broadcast control
packet filtering
flow control *
error detection *
congestion reduction *
===========================================================================
A network administrator is using network monitoring tools to measure how much bandwidth is being utilized during peak hours. This information will be used to decide what upgrades will be performed in the future. Which of the four LAN design goals are being used? (Choose two.)

scalability *
sustainability
manageability *
functionality
adaptability
reliability
===========================================================================
Which of the following services are provided by enterprise servers? (Choose three.)

Domain Name System *
user applications
file sharing
e-mail *
print sharing
corporate intranet *
===========================================================================
VLAN1 and VLAN2 have been configured on a switch. What must be done for hosts on VLAN1 to communicate with hosts on VLAN2?

VLAN overlapping must be enabled on the switch.
The MAC address must be added to the ARP table in the switch.
A router must be configured to allow routing between the VLANs. *
An entry in the switching table must be configured for each VLAN.
Communication between VLANs is automatically enabled on switches.
===========================================================================
What type of cabling is specified by TIA/EIA standards for interconnection of Intermediate and Main Distribution Facilities?

patch cables of variable lengths
horizontal cross-connect cabling
vertical cross-connect cabling *
parallel cross-connect cabling
===========================================================================
Which LAN standard uses CSMA/CD as its access method?

FDDI
Ethernet *
Wireless
Token Ring
===========================================================================
A distribution layer switch operates at which OSI layers? (Choose two.)

access
data link *
network *
internet
transport
===========================================================================
Which of the following are features of the access layer of the hierarchical network design model? (Choose two.)

inter-VLAN routing
Layer 2 filtering *
Layer 3 filtering
microsegmentation *
bandwidth security
===========================================================================
Why is it important that the data carrying capacity of vertical cabling be greater than that of the horizontal cable?

Vertical cabling is reserved for high bandwith video conferencing.
Vertical cabling carries traffic from the IDF to the user.
Vertical cabling carries traffic from the enterprise out to the Internet.
Vertical cabling carries traffic from multiple areas of the network. *
Layer-three packets move faster through vertical cabling.
===========================================================================
Which of the following affect network availability? (Choose three.)

throughput *
response time *
workstation speed
access to resources *
desktop applications
===========================================================================
What is the primary reason for implementing security and policy routing at the distribution layer?

filtering of core switching errors
preventing policy and security issues from burdening the core layer *
preventing unnecessary security policy decisions from burdening the access layer
maintaining a consistent three-layer security policy
isolating the access layer from traffic destined for other networks
===========================================================================
A server that houses an application specific to the 20 person accounting department and an application specific to the 10 person engineering department needs to be placed on the network. Which locations would provide the best performance for the network? (Choose two.)

MDF *
IDF1 *
IDF2
IDF3
===========================================================================
Which of the following are requirements of LAN design? (Choose three.)

adaptability *
manageability *
operability
scalability *
stability
===========================================================================
A major network upgrade that was designed to improve speed and reliability has recently been completed. Users in one part of the network are experiencing dramatically decreased throughput and loss of connectivity. Which of the LAN design goals was not met for these users?

functionality *
sustainability
adaptability
manageability
scalability
===========================================================================
Which devices are considered acceptable for creating more connection points at the end of horizontal cable runs? (Choose two.)

hubs *
bridges
switches *
routers
===========================================================================
Which layer of the hierarchical network design model is often referred to as the backbone?

access
distribution
network
core *
workgroup
WAN
===========================================================================
What will increase the number of broadcast domains in a network? (Choose two.)

replacing hubs with switches
segmenting the network by installing a router *
creating VLANs for each workgroup *
adding additional hubs to the local area network
replacing routers with LAN switches
adding bridges to connect different workgroups
===========================================================================
When designing a LAN, at which layer of the OSI model does the process of segmenting collision domains occur?

Layer 1
Layer 2 *
Layer 4
Layer 7
===========================================================================
Where should DNS and email servers be located?

IDF
MDF *
HCC
VCC
POP
===========================================================================
Which networking devices can be used at the access layer of the hierarchical network design model? (Choose two.)

hub *
bridge
switch *
router
repeater
AUI
===========================================================================
To reduce cost on a new network design, administrators select switches that initially will have 100 Mbps interface modules installed but will also have the ability to support 1000 Mbps interface modules. Which of the LAN design goals are being utilized? (Choose two.)

sustainability
reliability
manageability
adaptability *
functionality
scalability *
===========================================================================
A network administrator needs to increase bandwidth and reduce traffic on a network. What should be used in the access layer of the hierarchical network design model to dedicate bandwidth to users while limiting broadcast domains?

one router with multiple fast Ethernet interfaces
multiple routers with Fast Ethernet interfaces
multi-port gigabit switches
switches running VLANs *
managed smart hubs
===========================================================================
At which layer of the hierarchical design model do users connect to the network?

application
access *
distribution
network
core
===========================================================================
Which of the following are characteristics of the core layer of the hierarchical network design model? (Choose three.)

redundant paths *
high-level policy enforcement
packet manipulation
media transitions
rapid forwarding of traffic *
no packet filtering *
===========================================================================
Which hierarchical design model layer is responsible for containing network problems to the workgroups in which they occur?

application
access
distribution *
network
core
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