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Module 5_S3

   Trong: CCNA
 
Jan 16 2008, 04:21 PM     Bởi: lehuy0305
1.
Which of the following are requirements of LAN design? (Choose three.)
adaptability
manageability
operability
scalability
stability
2.
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
3.
Which of the following affect network availability? (Choose three.)
throughput
response time
workstation speed
access to resources
desktop applications
4.
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
5.
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
6.
A distribution layer switch operates at which OSI layers? (Choose two.)
access
data link
network
internet
transport
7.
Which layer of the hierarchical network design model is often referred to as the backbone?
access
distribution
network
core
workgroup
WAN
8.
At which layer of the hierarchical design model do users connect to the network?
application
access
distribution
network
core
9.
Which hierarchical design model layer is responsible for containing network problems to the workgroups in which they occur?
application
access
distribution
network
core
10.
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
11.
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
12.
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
13.
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
14.
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
15.
Where should DNS and email servers be located?
IDF
MDF
HCC
VCC
POP
16.
Which LAN standard uses CSMA/CD as its access method?
FDDI
Ethernet
Wireless
Token Ring
17.
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
18.
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
19.
Which devices are considered acceptable for creating more connection points at the end of horizontal cable runs? (Choose two.)
hubs
bridges
switches
routers
20.
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.



 

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