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CCNA3 TEST & ANSWER---SEM3 CH5 1 Which of the following are
responsibilities of OSI Layer 2 network devices? (Choose three.) broadcast
control packet filtering flow control ¡Ì error detection ¡Ì congestion
reduction ¡Ì 2 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 ¡Ì sustainability manageability ¡Ì functionality adaptability
reliability 3 Which of the following services are provided by enterprise
servers? (Choose three.) Domain Name System ¡Ì user applications file sharing
e-mail ¡Ì print sharing corporate intranet ¡Ì 4 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. ¡Ì An entry in the switching
table must be configured for each VLAN. Communication between VLANs is
automatically enabled on switches. 5 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 ¡Ì parallel cross-connect cabling 6 Which LAN
standard uses CSMA/CD as its access method? FDDI Ethernet ¡Ì Wireless Token
Ring 7 A distribution layer switch operates at which OSI layers? (Choose two.)
access data link ¡Ì network ¡Ì internet transport 8 Which of the following
are features of the access layer of the hierarchical network design model?
(Choose two.) inter-VLAN routing Layer 2 filtering ¡Ì Layer 3 filtering
microsegmentation ¡Ì bandwidth security 9 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. ¡Ì Layer-three packets
move faster through vertical cabling. 10 Which of the following affect network
availability? (Choose three.) throughput ¡Ì response time ¡Ì workstation
speed access to resources ¡Ì desktop applications 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 ¡Ì 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
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 ¡Ì IDF1 ¡Ì IDF2 IDF3 13
Which of the following are requirements of LAN design? (Choose three.)
adaptability ¡Ì manageability ¡Ì operability scalability ¡Ì stability 14
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 ¡Ì sustainability
adaptability manageability scalability 15 Which devices are considered
acceptable for creating more connection points at the end of horizontal cable
runs? (Choose two.) hubs ¡Ì bridges switches ¡Ì routers 16 Which layer of
the hierarchical network design model is often referred to as the backbone?
access distribution network core ¡Ì workgroup WAN 17 What will increase the
number of broadcast domains in a network? (Choose two.) replacing hubs with
switches segmenting the network by installing a router ¡Ì creating VLANs for
each workgroup ¡Ì adding additional hubs to the local area network replacing
routers with LAN switches adding bridges to connect different workgroups 18
When designing a LAN, at which layer of the OSI model does the process of
segmenting collision domains occur? Layer 1 Layer 2 ¡Ì Layer 4 Layer 7 19
Where should DNS and email servers be located? IDF MDF ¡Ì HCC VCC POP 20
Which networking devices can be used at the access layer of the hierarchical
network design model? (Choose two.) hub ¡Ì bridge switch ¡Ì router repeater
AUI 21 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 ¡Ì functionality scalability ¡Ì 22 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 ¡Ì managed
smart hubs 23 At which layer of the hierarchical design model do users connect
to the network? application access ¡Ì distribution network core 24 Which of
the following are characteristics of the core layer of the hierarchical network
design model? (Choose three.) redundant paths ¡Ì high-level policy
enforcement packet manipulation media transitions rapid forwarding of traffic
¡Ì no packet filtering ¡Ì 25 Which hierarchical design model layer is
responsible for containing network problems to the workgroups in which they
occur? application access ¡Ì distribution network core
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