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You are a technician at CertKing . Your boss is curious about VLANs. She asks you what advantages they
provide.
What should you tell her? (Choose three.)A. VLANs allow access to network services based on department, not physical location.B. VLANs utilize packet filtering to enhance network security.C. VLANs provide a low-latency, high bandwidth internetworking alternative.D. VLANs provide a method of communication between IP addresses in large networks.E. VLANs establish segmented broadcast domains in switched networks.F. VLANs can greatly simplify adding, moving, or changing hosts on the network.Ans: A, E, F
Explanation:
VLANs establish broadcast domains in switched networks, so by virtue of having the option to create many
efficient broadcast domains, congestion is reduced and network throughput is greatly enhanced. VLANs allow
networks to be divided by department or resource needs, rather then by physical location. When people move
departments, leave a department, or join a department, administration is easy and convenient with a few
keystrokes.
Incorrect Anss:
B, D. These would be router functions at layer 3. Switches and VLANs operate at layer 2 of the OSI model.C. The use of VLANs may actually increase the latency in some cases, as traffic from one VLAN to the other
will need to be routed.
Reference:
CCNA Self-Study CCNA INTRO exam certification Guide (Cisco Press, ISBN 1-58720-094-5) Page 264
Q43
You work as network consultant. Your customer, CertKing Inc, has a class C network license. CertKing
wants you to subnet the network to provide a separate subnet for each of its 5 departments. Each subnet
must support at least 24 hosts.
Which subnet mask should you use?
Which network mask should you use?A. 255.255.255.192B. 255.255.255.224C. 255.255.255.240D. 255.255.255.248E. 255.255.255.252F. 255.255.255.254Ans: B
Explanation:
The default subnet mask for class C network is 255.255.255.0. If one has to create 5 subnets, then 3 bits are
required. With 3 bits we can create 6 subnets. Remaining 5 bits are used for Hosts. One can create 30 hosts
using 5 bits in host field. This matches with requirement.
Q44
Match the hex and decimal numbers listed on the left with the corresponding binary number listed on the
right. Not all options apply.Ans:
Explanation:
170 (Decimal) = 10101010
192 (Decimal) = 11000000
F1 (241 = Decimal) = 11110001
9F (159 = Decimal) = 10011111
Reference:Ans: C
Q5
You are the network administrator at CertKing . CertKing has Cisco Unity integrated
with Cisco CallManager. CertKing users report that Message Waiting indicators are
intermittent on some extensions. In an attempt to resolve this issue, you have opened the
Integration Monitor.
Which of the following statement is true regarding this scenario?A. This action will not help.B. This action will help in resolving the issue.C. This action will help if used in conjunction with transaction data.D. This action will not help unless the Extension Specific Processing Utility is also
opened.Ans: A
Q6
You are the network administrator at CertKing . CertKing has a Cisco Unity system. The
CertKing CEO wants a report that lists the distribution lists available through the Cisco
Unity directory.
Which report should you run?A. Distribution.B. Distribution Lists.C. Global Address Lists.D. Private Distribution Lists.Ans: B
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