Question 1

Which option is true about routing control while using routing protocols in a DMVPN network (or any GRE-over-IPsec network)?

Accepted Answer

A)  Routing of the data plane traffic should be carried out by means of the GRE tunnel and a separate routing instance should be used to handle routing of the crypto endpoints. 
B)  The control plane traffic for the crypto endpoints should be routed through the GRE tunnel; the control plane traffic for the data plane traffic should travel via the transport network. 
C)  If the network is a private MPLS network, the routing for the data plane traffic and the crypto endpoints should be run outside of the GRE tunnel. 
D)  The routing used to establish the crypto endpoints should include information for the data networks behind the endpoints. 
A)  Routing of the data plane traffic should be carried out by means of the GRE tunnel and a separate routing instance should be used to handle routing of the crypto endpoints. 
B)  The control plane traffic for the crypto endpoints should be routed through the GRE tunnel; the control plane traffic for the data plane traffic should travel via the transport network. 
C)  If the network is a private MPLS network, the routing for the data plane traffic and the crypto endpoints should be run outside of the GRE tunnel. 
D)  The routing used to establish the crypto endpoints should include information for the data networks behind the endpoints.

Question 2

Refer to the exhibit. In the DWDM network, a ring topology carries multiple services between two sites. Which option describes the employed protection design?

Accepted Answer

A)  Y-cable protection 
B)  Splitter protection 
C)  Client protection 
D)  UDLD 
E)  FEC protection 
A)  Y-cable protection 
B)  Splitter protection 
C)  Client protection 
D)  UDLD 
E)  FEC protection

Question 3

Among the design criteria for a network is the requirement that bandwidth capacity be managed proactively. Which two techniques should be used to effectively support the proactive management of network bandwidth capacity? (Choose two.)

Accepted Answer

A)  analyze network bandwidth utilization to establish a baseline 
B)  configure SNMP MIB collectors to trigger at utilization thresholds 
C)  implement utilization measurement and tracking measures in the network 
D)  implement QoS to increase available bandwidth and overall throughput 
A)  analyze network bandwidth utilization to establish a baseline 
B)  configure SNMP MIB collectors to trigger at utilization thresholds 
C)  implement utilization measurement and tracking measures in the network 
D)  implement QoS to increase available bandwidth and overall throughput

Question 4

With a multicast design, applications can send one copy of each packet and address it to the group of computers that want to receive it. This technique addresses packets to a group of receivers rather than to a single receiver, and it depends on the network to forward the packets to only the networks that need to receive them. Which two of these are characteristics of multicast routing?

Accepted Answer

A)  multicast routing uses OSPF. 
B)  multicast routing uses RPF. 
C)  In multicast routing, the source of a packet is known. 
D)  When network topologies change, multicast distribution trees are not rebuilt, but use the original path 
A)  multicast routing uses OSPF. 
B)  multicast routing uses RPF. 
C)  In multicast routing, the source of a packet is known. 
D)  When network topologies change, multicast distribution trees are not rebuilt, but use the original path

Question 5

WRED is short for Weighted Random Early Detection. Which two descriptions are correct concerning WRED? (Choose two.)

Accepted Answer

A)  WRED throttles TCP-based applications to avoid congestion within the queue servicing the traffic. 
B)  WRED provides bandwidth guarantees for packets within a queue, and tells the scheduler the order in which queues should be served. 
C)  WRED allows thresholds to be applied to give higher priority applications access to limited buffer resources. 
D)  WRED can inform remote devices that there is congestion on the network by setting the pause bit within the ToS field, instructing end devices to throttle their transmissions. 
A)  WRED throttles TCP-based applications to avoid congestion within the queue servicing the traffic. 
B)  WRED provides bandwidth guarantees for packets within a queue, and tells the scheduler the order in which queues should be served. 
C)  WRED allows thresholds to be applied to give higher priority applications access to limited buffer resources. 
D)  WRED can inform remote devices that there is congestion on the network by setting the pause bit within the ToS field, instructing end devices to throttle their transmissions.

Question 6

Which option describes a design benefit of root guard?

Accepted Answer

A)  It prevents switch loops caused by unidirectional point-to-point link condition of Rapid PVST+ and MST. 
B)  It allows small, unmanaged switches to be plugged into ports of access switches without the risk of switch loops. 
C)  It does not generate a spanning-tree topology change upon connecting and disconnecting a station on a port. 
D)  It prevents switched traffic from traversing suboptimal paths on the network 
E)  It prevents switch loops by detecting one-way communications onthe physical port
F) It makes the port go immediately into the forwarding state after being connected. 
A)  It prevents switch loops caused by unidirectional point-to-point link condition of Rapid PVST+ and MST. 
B)  It allows small, unmanaged switches to be plugged into ports of access switches without the risk of switch loops. 
C)  It does not generate a spanning-tree topology change upon connecting and disconnecting a station on a port. 
D)  It prevents switched traffic from traversing suboptimal paths on the network 
E)  It prevents switch loops by detecting one-way communications onthe physical port
F) It makes the port go immediately into the forwarding state after being connected.

Question 7

Which description is correct about connecting an IP multicast domain that is operating in PIM dense mode to a PIM sparse mode domain?

Accepted Answer

A)  The interconnection must be made at the rendezvous point of the PIM sparse mode domain. 
B)  The connection can be made at any location in the network, but PIM sparse mode and PIM dense mode cannot inter-operate; IGMP must be used to provide the interconnection. 
C)  The connection can be made at any location in the network, as PIM sparse mode will inter-operate seamlessly with PIM dense mode. 
D)  PIM dense mode and sparse mode domains are not inter-operable and cannot be connected. 
A)  The interconnection must be made at the rendezvous point of the PIM sparse mode domain. 
B)  The connection can be made at any location in the network, but PIM sparse mode and PIM dense mode cannot inter-operate; IGMP must be used to provide the interconnection. 
C)  The connection can be made at any location in the network, as PIM sparse mode will inter-operate seamlessly with PIM dense mode. 
D)  PIM dense mode and sparse mode domains are not inter-operable and cannot be connected.

Question 8

Internet Protocol version 6 (IPv6) is an Internet Layer protocol for packet- switched internetworks. Two islands of IPv6 networks are running IS-IS (IPv6 IGP). The routing protocol needs to operate over the tunnel over an IPv4 network. Which tunneling method can achieve this objective?

Accepted Answer

A)  ISATAP tunnels 
B)  automatic IDC tunnels 
C)  6to4 tunnels 
D)  GRE tunnels 
A)  ISATAP tunnels 
B)  automatic IDC tunnels 
C)  6to4 tunnels 
D)  GRE tunnels

Question 9

According to the following exhibit, company 1 contains two autonomous systems (AS1 and AS2) connected via ISP A, which has an AS number of 100. Router P4S-RB and Router P4S-RC are advertising an aggregate of X.X.X.0/23 so that AS1 is able to reach the two server farms. The two links from AS2 are not being used efficiently. How can AS2 use both of the links coming into it?

Accepted Answer

A)  create another link between Router P4S-RA in AS1 and ISP A 
B)  configure two static routes in Router P4S-RA for X.X.X.0/23 pointing to Router P4S-RB and Router P4S-RC 
C)  advertise each X.X.X.0/24 independently from Router P4S-RB and Router P4S-RC 
D)  configure iBGP between Router P4S-RB and Router P4S-RC to load-share traffic once it reaches AS2 
A)  create another link between Router P4S-RA in AS1 and ISP A 
B)  configure two static routes in Router P4S-RA for X.X.X.0/23 pointing to Router P4S-RB and Router P4S-RC 
C)  advertise each X.X.X.0/24 independently from Router P4S-RB and Router P4S-RC 
D)  configure iBGP between Router P4S-RB and Router P4S-RC to load-share traffic once it reaches AS2

Question 10

You have been asked to design a high-density wireless network for a university campus. Which three principles would you apply in order to maximize the wireless network capacity? (Choose three.)

Accepted Answer

A)  Increase the number of SSIDs to load-balance the client traffic. 
B)  Choose a high minimum data rate to reduce the duty cycle. 
C)  Make use of the 5-GHz band to reduce the spectrum utilization on 2.4 GHz when dual-band clients are used. 
D)  Enable 802.11ag channel bonding on both 2.4 GHz and 5 GHz to increase the maximum aggregated cell throughput. 
E)  Use directional antennas to achieve better sector separation channel reuse.
F) Implement a four-channel design on 2.4 GHz to increase the number of available channels. 
A)  Increase the number of SSIDs to load-balance the client traffic. 
B)  Choose a high minimum data rate to reduce the duty cycle. 
C)  Make use of the 5-GHz band to reduce the spectrum utilization on 2.4 GHz when dual-band clients are used. 
D)  Enable 802.11ag channel bonding on both 2.4 GHz and 5 GHz to increase the maximum aggregated cell throughput. 
E)  Use directional antennas to achieve better sector separation channel reuse.
F) Implement a four-channel design on 2.4 GHz to increase the number of available channels.

Question 11

You work as a network technician for the P4S Ltd. Study the exhibit carefully, router P4S-RA is the hub router in a Frame Relay hub-and-spoke deployment. Configure router P4S-RA's serial interface as a point-to-multipoint interface, and it is servicing three spoke routers. The link between Router P4S-RC and the frame provider experiences a service disruption, which causes the interface on Router P4S-RC to go down. How does Router P4S-RA learn of this failure in the network and how does it react?

Accepted Answer

A)  If OAM is configured between Router P4S-RA and Router P4S-RC, router P4S-RA will be notified of the failure after three missed OAM packets. After the third OAM packet is missed, the frame PVC becomes inactive, and this event terminates the routing process neighbor relationship established between Router P4S-RA and Router P4S-RC. 
B)  Router P4S-RA does not detect the failure in the network and its interface continues to remain in an operational state. If routing is configured over this link, Router P4S-RA must wait for the neighbor relationship to time-out before updating its routing table to account for the lost router and its networks. 
C)  Router P4S-RA must wait for a full LMI status update from the provider frame switch before it is notified about the PVC status. Once the full LMI status message is received, the routing process neighbor relationship between Router P4S-RA and Router P4S-RC is immediately terminated. 
D)  Router P4S-RA immediately detects the failure via LMI notification and its interface is placed in a non-operational state. If routing is configured over this link, the neighbor relationship is terminated and the routing table is updated. The change is then propagated as appropriate to the rest of the network. 
A)  If OAM is configured between Router P4S-RA and Router P4S-RC, router P4S-RA will be notified of the failure after three missed OAM packets. After the third OAM packet is missed, the frame PVC becomes inactive, and this event terminates the routing process neighbor relationship established between Router P4S-RA and Router P4S-RC. 
B)  Router P4S-RA does not detect the failure in the network and its interface continues to remain in an operational state. If routing is configured over this link, Router P4S-RA must wait for the neighbor relationship to time-out before updating its routing table to account for the lost router and its networks. 
C)  Router P4S-RA must wait for a full LMI status update from the provider frame switch before it is notified about the PVC status. Once the full LMI status message is received, the routing process neighbor relationship between Router P4S-RA and Router P4S-RC is immediately terminated. 
D)  Router P4S-RA immediately detects the failure via LMI notification and its interface is placed in a non-operational state. If routing is configured over this link, the neighbor relationship is terminated and the routing table is updated. The change is then propagated as appropriate to the rest of the network.

Question 12

You have been asked to establish a design that will allow your company to migrate from a WAN service to a Layer 3 VPN service. In your design, you are keeping some WAN links between critical sites as a backup for this service. You plan to use OSPF as your IGP and BGP for the PE-CE protocol. When the Layer 3 VPN service is available, how will you prevent transit traffic over the backup links?

Accepted Answer

A)  Redistribute routes at the CE as external type 1. 
B)  Redistribute routes at the CE as external type 2. 
C)  Use conditional advertisement only when the Layer 3 service is down. 
D)  Manually turn off the backdoor link when the Layer 3 service is up. 
A)  Redistribute routes at the CE as external type 1. 
B)  Redistribute routes at the CE as external type 2. 
C)  Use conditional advertisement only when the Layer 3 service is down. 
D)  Manually turn off the backdoor link when the Layer 3 service is up.

Question 13

Which three characteristics of the Single Tier and the Dual Tier Headend Architectures for DMVPN designs are true? (Choose three.)

Accepted Answer

A)  A Dual Tier Headend Architecture is required when using dual cloud topologies with spoke-to-spoke connectivity 
B)  In a Dual Tier Headend Architecture, the GRE tunnel endpoint and encryption endpoint functionalities are on different routers 
C)  A Single Tier Headend Architecture is required when using dual cloud topologies with spoke-to-spoke connectivity 
D)  In a Single Tier Headend Architecture, the GRE tunnel endpoint and encryption endpoint functionalities are on the same router 
E)  In a Single Tier Headend Architecture, there is a single headend router per DMVPN cloud topology
F) In a Dual Tier Headend Architecture, there are two different headend routers per DMVPN cloud for high availability purposes 
A)  A Dual Tier Headend Architecture is required when using dual cloud topologies with spoke-to-spoke connectivity 
B)  In a Dual Tier Headend Architecture, the GRE tunnel endpoint and encryption endpoint functionalities are on different routers 
C)  A Single Tier Headend Architecture is required when using dual cloud topologies with spoke-to-spoke connectivity 
D)  In a Single Tier Headend Architecture, the GRE tunnel endpoint and encryption endpoint functionalities are on the same router 
E)  In a Single Tier Headend Architecture, there is a single headend router per DMVPN cloud topology
F) In a Dual Tier Headend Architecture, there are two different headend routers per DMVPN cloud for high availability purposes

Question 14

Which one of the following technologies could offer effective authentication and port-based access control in a wireless network by use of static WEP keys?

Accepted Answer

A)  802.1X 
B)  AES-CCMP 
C)  RADIUS 
D)  TKIP 
A)  802.1X 
B)  AES-CCMP 
C)  RADIUS 
D)  TKIP

Question 15

How many broadcast segments are contained in this network according to the exhibit?

Accepted Answer

A)  1 
B)  2 
C)  4 
D)  5 
A)  1 
B)  2 
C)  4 
D)  5

Question 16

Intermediate system to intermediate system (IS-IS), is a protocol used by network devices (routers) to determine the best way to forward datagrams through a packet-switched network, a process called routing. A client has approached you about deploying very fast IS-IS hello timers across an intercontinental high speed SONET link. What's your option?

Accepted Answer

A)  Fast hello timers are a good choice for this link because the length of the link indicates there will be at least one SONET amplifier that disables PATH alarms on the circuit. 
B)  Fast hello timers are a good choice for this link because on long haul SONET links the reporting of LINE and PATH errors can take a long time. 
C)  Fast hello timers are not a good choice for this link because the link is physically long and the propagation delay may cause IS-IS to believe the link has failed when it has not. 
D)  Fast hello timers are not a good choice for this link because SONET links provide link-down notification much faster than IS-IS could detect a circuit failure by means of hello processing. 
A)  Fast hello timers are a good choice for this link because the length of the link indicates there will be at least one SONET amplifier that disables PATH alarms on the circuit. 
B)  Fast hello timers are a good choice for this link because on long haul SONET links the reporting of LINE and PATH errors can take a long time. 
C)  Fast hello timers are not a good choice for this link because the link is physically long and the propagation delay may cause IS-IS to believe the link has failed when it has not. 
D)  Fast hello timers are not a good choice for this link because SONET links provide link-down notification much faster than IS-IS could detect a circuit failure by means of hello processing.

Question 17

You are designing an optical network. Your goal is to ensure that your design contains the highest degree of resiliency. In which two ways will you leverage a wavelength-switched optical network solution in your network design? (Choose two.)

Accepted Answer

A)  a wavelength-switched optical network assigns routing and wavelength information 
B)  a wavelength-switched optical network takes linear and nonlinear optical impairment calculation into account 
C)  a wavelength-switched optical network guarantees restoration based strictly on the shortest path available 
D)  a wavelength-switched optical network eliminates the need for dispersion compensating units in a network 
A)  a wavelength-switched optical network assigns routing and wavelength information 
B)  a wavelength-switched optical network takes linear and nonlinear optical impairment calculation into account 
C)  a wavelength-switched optical network guarantees restoration based strictly on the shortest path available 
D)  a wavelength-switched optical network eliminates the need for dispersion compensating units in a network

Question 18

A network vulnerability scanner is part of which critical element of network and system security?

Accepted Answer

A)  host security 
B)  perimeter security 
C)  security monitoring 
D)  policy management 
A)  host security 
B)  perimeter security 
C)  security monitoring 
D)  policy management

Question 19

Refer to the exhibit.   Which two options provide the best loop protection in this topology, regardless of a bridged domain configuration? (Choose two.)

Accepted Answer

A)  PVRSTP on all switches 
B)  REP on all switches 
C)  MST on all switches 
D)  BPDU guard on Switch A and Switch D 
E)  8032 on ring A-B-C-D 
A)  PVRSTP on all switches 
B)  REP on all switches 
C)  MST on all switches 
D)  BPDU guard on Switch A and Switch D 
E)  8032 on ring A-B-C-D

Question 20

Which way can most effectively improve BGP convergence in the event that a point-to-point link, over which an EBGP session is running, fails?

Accepted Answer

A)  use BGP multihop 
B)  configure EBGP fast external fallover 
C)  enable BGP graceful restart 
D)  reduce the keepalive timer to the minimum value allowed 
A)  use BGP multihop 
B)  configure EBGP fast external fallover 
C)  enable BGP graceful restart 
D)  reduce the keepalive timer to the minimum value allowed

Exam 44: Deploying Cisco Unified Contact Center Express

Which option is true about routing control while using routing protocols in a DMVPN network (or any GRE-over-IPsec network)?

Refer to the exhibit. In the DWDM network, a ring topology carries multiple services between two sites. Which option describes the employed protection design?

Among the design criteria for a network is the requirement that bandwidth capacity be managed proactively. Which two techniques should be used to effectively support the proactive management of network bandwidth capacity? (Choose two.)

WRED is short for Weighted Random Early Detection. Which two descriptions are correct concerning WRED? (Choose two.)

Which option describes a design benefit of root guard?

Which description is correct about connecting an IP multicast domain that is operating in PIM dense mode to a PIM sparse mode domain?

Internet Protocol version 6 (IPv6) is an Internet Layer protocol for packet- switched internetworks. Two islands of IPv6 networks are running IS-IS (IPv6 IGP). The routing protocol needs to operate over the tunnel over an IPv4 network. Which tunneling method can achieve this objective?

You have been asked to design a high-density wireless network for a university campus. Which three principles would you apply in order to maximize the wireless network capacity? (Choose three.)

Which three characteristics of the Single Tier and the Dual Tier Headend Architectures for DMVPN designs are true? (Choose three.)

Which one of the following technologies could offer effective authentication and port-based access control in a wireless network by use of static WEP keys?

How many broadcast segments are contained in this network according to the exhibit?

You are designing an optical network. Your goal is to ensure that your design contains the highest degree of resiliency. In which two ways will you leverage a wavelength-switched optical network solution in your network design? (Choose two.)

A network vulnerability scanner is part of which critical element of network and system security?

Refer to the exhibit. Which two options provide the best loop protection in this topology, regardless of a bridged domain configuration? (Choose two.)

Which way can most effectively improve BGP convergence in the event that a point-to-point link, over which an EBGP session is running, fails?

Supporting Cisco Data Center System Devices (DCTECH)

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Configuring Cisco MDS 9000 Series Switches (DCSAN)

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