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Product Description
Exam Number/Code: 642-813
Exam Name: 642-813 Value Pack
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Product Description
Exam Number/Code: 642-902
Exam Name: 642-902 Value Pack
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Product Description

Exam Number/Code: 642-892

Exam Name: Composite

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QUESTION 51
Which one of the following commands would configure EIGRP for IP on your Cisco
router?

A. ip eigrp routing
B. router eigrp process-id
C. ip eigrp autonomous-system-number
D. router eigrp autonomous-system-number
E. None of the above

Answer: D

Explanation:
Perform the following steps to configure EIGRP for IP:
Step 1 Enable EIGRP and define the autonomous system.
routerCK(config)#router eigrp autonomous-system-number
Step 2 Indicate which networks are part of the EIGRP autonomous system.
routerCK(config-router)#network network-number
Step 3 Define bandwidth of a link for the purposes of sending routing update traffic on
the link.
routerCK(config-if)#bandwidth kilobits. This step is optional.

The syntax for configuring variance on an EIGRP router is:
variance number
In the EIGRP command sequence above, what is the function of the number
variable?

A. It acts as a multiplier.
B. It defines the limit for how far the metrics can be separated.
C. It indicates how many paths can be used for load balancing.
D. It indicates how many paths can be used for unequal load balancing.
E. None of the above

Answer: A

Explanation:
Every routing protocol supports equal cost path load balancing. IGRP and EIGRP also
support unequal cost path load balancing, which is known as variance. The variance
number command instructs the router to include routes with a metric less than or equal to
number times the minimum metric route for that destination. Thus number is used as
multiplier, even though it defines a limit for the metrics. This limit is used for unequal
load balancing.
QUESTION 54
You are the network engineer at Certkiller . You want to configure EIGRP to run
across a 56 Kbps serial PPP link on the Certkiller network. You also want to ensure
the proper convergence of EIGRP routes.
What command should you issue on the serial interface?

A. bandwidth 56
B. bandwidth 56000
C. ip bandwidth-percent eigrp 1 56
D. ip bandwidth-percent eigrp 1 56000
E. None of the above

Answer: A

Explanation:
The bandwidth is a logical construct whose value can have wide-reaching implications on
the function of your network. It does not affect the actual speed of the link. In fact, it is
practical to configure the bandwidth command only on serial lines, where the speed of
the link will vary considerably. This command is useful for routing protocols that use
bandwidth as part of the metric. For serial interfaces, this value defaults to a full T1, so it
my appear to be a better link than what is actually being used.
Router (config) # interface S0
Router (config-if) # bandwidth speed-of-line
The bandwidth command is always specified in kbps.
EIGRP limits itself to 50 percent of the value specified in the
bandwidth command, or if the bandwidth command is not set, the interface defaults. If
you need to limit this percentage further, the upper limit that EIGRP uses can be stated as
a percentage of the bandwidth command.
The ip bandwidth-percent-eigrp command interacts with the bandwidth command on the
interface. You would use this command primarily because in your network, the
bandwidth command does not reflect the true speed of the link. The bandwidth command
might have been altered to manipulate the routing metric and path selection of a routing
protocol, such as IGRP or OSPF. It might be better to use other methods of controlling
the routing metric and return the bandwidth to a true value. Otherwise, the ip
bandwidth-percent eigrp command is available. It is possible to set a bandwidth percent
that is larger than the stated bandwidth. This is with the understanding that, although the
bandwidth might be stated to be 56 kbps, the link is in fact 256 kbps. The following
shows the structure of the ip bandwidth-percent eigrp command:
Router (config) #interface S0
Router (config-if) #ip bandwidth-percent eigrp autonomous-system-number percent

QUESTION 58
Your network consists of a router named R1 that’s configured
in a hub and spoke topology, supporting 24 remote office via a point-to-multipoint
Frame Relay EIGRP network deployment. The bandwidth command was not
manually entered on the frame relay main interface or the sub-interfaces. What is
the perceived bandwidth (as seen by the EIGRP process) of each Frame Relay
connection?

A. 64 kbps
B. 128 kbps
C. 1.544 Mbps
D. 1.536 Mbps
E. None of the above

Answer: A

Explanation:
The default bandwidth for all serial WAN interfaces is 1.544 Mbps. EIGRP by default
assumes the bandwidth of a serial interface is a full T1 (1.544 Mbps) if not specified.
This includes sub-interfaces. For multipoint frame relay interfaces, the perceived
bandwidth used by the IOS is taken from the configured bandwidth, divided by the
number of configured neighbors. Since there are 24 remote offices, there are 24
configured frame relay neighbors, so the bandwidth used by the IOS is the full T1
divided by 24, which is 64kbps.

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Exam Number/Code: 642-901
Exam Name: BSCI – Building Scaleable Cisco Internetworks
VUE Code: 642-901
Questions Type: Multiple choice,

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The Building Scalable Cisco Internetworks (BSCI 642-901) is a qualifying exam for the Cisco Certified Network Professional CCNP®, Cisco Certified Design Professional CCDP®, and Cisco Certified Internetwork Professional CCIP™ certifications. The BSCI 642-901 exam will certify that the successful candidate has important knowledge and skills necessary to use advanced IP addressing and routing in implementing scalability for Cisco ISR routers connected to LANs and WANs. The exam covers topics on Advanced IP Addressing, Routing Principles, Multicast Routing, IPv6, Manipulating Routing Updates, Configuring basic BGP, Configuring EIGRP, OSPF, and IS-IS.

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Exam Number/Code: 642-825
Exam Name: ISCW – Implementing Secure Converged Wide Area Networks
VUE Code: 642-825
Questions Type: Single choice,

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The Implementing Secure Converged Wide Area Networks (ISCW 642-825) is a qualifying exam for the Cisco Certified Network Professional CCNP®. The ISCW 642-825 exam will certify that the successful candidate has important knowledge and skills necessary to secure and expand the reach of an enterprise network to teleworkers and remote sites with focus on securing remote access and VPN client configuration. The exam covers topics on Cisco hierarchical network model as it pertains to the WAN, teleworker configuration and access, frame mode MPLS, site-to-site IPSEC VPN, Cisco EZVPN, strategies used to mitigate network attacks, Cisco device hardening and IOS firewall feature

QUESTION NO: 1
A few small certifyme.com locations use HFC cable to connect to the certifyme.com WAN.
Which HFC cable network statement is true about the downstream data channel to
the customer and the upstream data channel to the service provider?
A. The upstream data path is assigned a channel in a higher frequency range than the
downstream path has.
B. The downstream data path is assigned a 30 MHz channel and the upstream data path is
assigned a 1 MHz channel.
C. The downstream data path is assigned a fixed bandwidth channel and the upstream
data path uses a variable bandwidth channel.
D. Both upstream and downstream data paths are assigned in 6 MHz channels.
E. None of the above.
Answer: D
Explanation:
Hybrid fiber-coaxial (HFC): A mixed optical-coaxial network in which optical fiber
replaces some or all of the traditional trunk portion of the cable network.
The HFC architecture is the evolution of an initial cable system and signifies a network
that incorporates both optical fiber along with coaxial cable to create a broadband
network. By upgrading a cable plant to an HFC architecture, you can deploy a data
network over an HFC system to offer high-speed Internet services and you can serve
more subscribers. The cable network is segmented into smaller service areas in which
fewer amplifiers are cascaded after each optical node-typically five or fewer. The
tree-and-branch network architecture for HFC can be a fiber backbone, cable area
network, superdistribution, fiber to the feeder, or a ring.
Downstream: An RF signal transmission (TV channels, data) from source (headend) to
the destination (subscribers). Downstream is also called a forward path.
Upstream: An RF signal transmission opposite to downstream-from subscribers to the
headend. Upstream is also called a return or reverse path.

Delivering services over a cable network requires different RF frequencies-the outgoing
frequencies are in the 50-to-860 MHz range, the incoming are in the 5-to-42 MHz range.
To deliver data services over a cable network TV channels which usually operate at 6
MHz range for the downstream, and 6 MHz or less (for asymmetric cable connections)
for upstream traffic from the corresponding frequency range are usually used.
QUESTION NO: 2
Many small certifyme.combranch offices use broadband cable for data connection
access. Which three modulation signaling standards are used in broadband cable
technology? (Select three)

A. S-Video
B. NTSC
C. SECAM
D. PAL
E. FEC
F. FDM
G. MLP
Answer: B, C, D
Explanation:
Broadband: Data transmission where multiple pieces of data are sent simultaneously to
increase the effective rate of transmission. In cable systems, the term broadband refers to
the frequency-division multiplexing (FDM) of many signals in a wide radio frequency
(RF) bandwidth over an HFC network, and the capability to handle vast amounts of
information.
NTSC is a North American TV technical standard for analog TV systems. The standard
was created in 1941 and is named after the National Television System Committee
formed in 1940. The standard uses a 6-MHz modulated signal. PAL is a color encoding
system used in broadcast television systems in most of Europe, Asia, Africa, Australia,
Brazil, and Argentina, and uses a 6-MHz, 7-MHz, or 8-MHz modulated signal. The color
difference signals an alternate phase at the horizontal line rate. SECAM is an analog
color TV system used in France and certain Eastern European countries that uses an
8-MHz modulated signal.
Some of the smaller certifyme.comlocations use HFC cable to connect to the certifyme.com
WAN. Which two statements are true about broadband cable (HFC) systems?
(Select two)

A. Cable modems operate at Layers 1, 2, and 3 of the OSI model.
B. Cable modems operate at Layers 1 and 2 of the OSI model.
C. A function of the cable modem termination system is to convert the digital data stream
from the end user host into a modulated RF signal for transmission onto the cable system.
D. Cable modems only operate at Layer 1 of the OSI model.
E. A function of the cable modem termination system (CMTS) is to convert the
modulated signal from the cable modem into a digital signal.
Answer: B, E
Explanation:
Hybrid fiber-coaxial (HFC): A mixed optical-coaxial network in which optical fiber
replaces some or all of the traditional trunk portion of the cable network.
The HFC architecture is the evolution of an initial cable system and signifies a network
that incorporates both optical fiber along with coaxial cable to create a broadband
network. By upgrading a cable plant to an HFC architecture, you can deploy a data
network over an HFC system to offer high-speed Internet services and you can serve
more subscribers. The cable network is segmented into smaller service areas in which
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tree-and-branch network architecture for HFC can be a fiber backbone, cable area
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Exam Number/Code: 642-845
Exam Name: ONT – Optimizing Converged Cisco Networks
VUE Code: 642-845
Questions Type: Multiple choice,

“ONT – Optimizing Converged Cisco Networks”, also known as 642-845 exam, is a Cisco certification.
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The Optimizing Converged Cisco Networks (642-845 ONT) is a qualifying exam for the Cisco Certified Network Professional CCNP®. The ONT 642-845 exam will certify that the successful candidate has important knowledge and skills in optimizing and providing effective QOS techniques for converged networks. The exam topics include implementing a VOIP network, implementing QoS on converged networks, specific IP QoS mechanisms for implementing the DiffServ QoS model, AutoQoS, wireless security and basic wireless management.
QUESTION NO: 7
You want to ensure the highest call quality possible for all VOIP calls in the
Certifyme.com network. Which codec standard would provide the highest voice-quality,
mean opinion score (MOS)?

A. G.711, PCM
B. G.729, CS-ACELP
C. G.729A, CS-ACELP
D. G.728, LDCELP
E. None of the above
Answer: A
Explanation:
When a call is placed between two phones, the call setup stage occurs first. As a result of
this process, the call is logically set up, but no dedicated circuits (lines) are associated
with the call. The gateway then converts the received analog signals into digital format
using a codec, such as G.711 or G.729 if voice compression is being used.

When analog signals are digitized using the G.711 codec, 20 ms of voice consists of 160
samples, 8 bits each. The result is 160 bytes of voice information. These G.711 samples
(160 bytes) are encapsulated into an RTP header (12 bytes), a UDP header (8 bytes), and

an IP header (20 bytes). Therefore, the whole IP packet carrying UDP, RTP, and the
voice payload has a size of 200 bytes. When G.711 is being used, the ratio of header to
payload is smaller because of the larger voice payload. Forty bytes of headers are added
to 160 bytes of payload, so one-fourth of the G.711 codec bandwidth (64 kbps) has to be
added. Without Layer 2 overhead, a G.711 call requires 80 kbps.
QUESTION NO: 8
When a router converts analog signals to digital signals as part of the VoIP process,
it performs four separate steps. From the options shown below, which set of steps
contains the steps in their correct sequence?

A. encoding
quantization
optional compression
sampling
B. optional compression
encoding
sampling
quantization
C. sampling
quantization
encoding
optional compression
D. optional compression
sampling
encoding
quantization
E. sampling quantization
optional compression
encoding
F. encoding
optional compression
quantization
sampling
G. None of the above
Answer: C
Explanation:
Step 1 Sampling: The analog signal is sampled periodically. The output of the sampling
is a pulse amplitude modulation (PAM) signal.
Step 2 Quantization: The PAM signal is matched to a segmented scale. This scale
measures the amplitude (height) of the PAM signal.
Step 3 Encoding: The matched scale value is represented in binary format.
Step 4 Compression:
Optionally, voice samples can be compressed to reduce bandwidth requirements.
Analog-to-digital conversion is done by digital signal processors (DSPs), which are
located on the voice interface cards. The conversion is needed for calls received on
analog lines, which are then sent out to a packet network or to a digital voice interface.

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Exam Number/Code: 642-892
Exam Name: Composite
VUE Code: 642-892
Questions Type: Multiple choice,

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The Composite exam (642-892) is the quickest way for currently certified Cisco Certified Network Professionals (CCNP®) and Cisco Certified Design Professionals (CCDP®) to obtain recertification. The exam tests skills and knowledge pertaining to the Building Scalable Cisco Internetworks (BSCI) and Building Cisco Managed Switched Networks (BCMSN) courses. Composite may be taken to recertify CCNP and CCDP certifications; it may also be taken in place of the BSCI and BCMSN exams required for CCNP and CCDP certifications. Candidates must successfully pass both routing and switching subsections of the Composite exam to successfully pass the exam.

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Exam Number/Code: 642-812
Exam Name: BCMSN – Building Converged Cisco Multilayer Switched Networks
VUE Code: 642-812
Questions Type: Single choice,

“BCMSN – Building Converged Cisco Multilayer Switched Networks”, also known as 642-812 exam, is a Cisco certification.
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With the complete collection of questions and answers, Pass4sure has assembled to take you through 286 Q&As to your 642-812 Exam preparation. In the 642-812 exam resources, you will cover every field and category in CCNP helping to ready you for your successful Cisco Certification.
Questions and Answers : 286 Q&As
Updated: April 13th , 2008
Market Price: $129.99
The Building Converged Cisco Multilayer Switched Networks (BCMSN 642-812) is a qualifying exam for the Cisco Certified Network Professional CCNP® and the Cisco Certified Design Professional CCDP® certifications. The BCMSN 642-812 exam will certify that the successful candidate has important knowledge and skills necessary to implement scalable multilayer switched networks. The exam includes topics on Campus Networks, describing and implementing advanced Spanning Tree concepts, VLANs and Inter-VLAN routing, High Availability, Wireless Client Access, Access Layer Voice concepts, and minimizing service Loss and Data Theft in a Campus Network.

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Questions and Answers : 346 Q&As
Updated: 2008-09-11
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