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People with IT skills and networks are under-supplied worldwide. The US Department of Labor estimates that the number of workers in network and computer systems will grow by 31 per cent between 2014 and 2024. Brazil's IT industry is expected to grow by 3 per cent by 2019 and is expected to remain more than 160,000 vacancies in the next two years.

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Question No 1:

Which three conditions can cause excessive unicast flooding? (Choose three.)

A. Asymmetric routingB. Repeated TCNsC. The use of HSRPD. Frames sent to FFFF.FFFF.FFFFE. MAC forwarding table overflowF. The use of Unicast Reverse Path Forwarding

Answer: A,B,E



Question No 2:

Which congestion-avoidance or congestion-management technique can cause global synchronization?

A. Tail dropB. Random early detectionC. Weighted random early detectionD. Weighted fair queuing

Answer: A



Question No 3:

Which two options are reasons for TCP starvation? (Choose two.)

A. The use of tail dropB. The use of WREDC. Mixing TCP and UDP traffic in the same traffic classD. The use of TCP congestion control

Answer: C,D



Question No 4:

Which type of port would have root guard enabled on it?

A. A root portB. An alternate portC. A blocked portD. A designated port

Answer: D



Question No 5:

Which two statements are true about an EPL? (Choose two.)

A. It is a point-to-point Ethernet connection between a pair of NNIs.B. It allows for service multiplexing.C. It has a high degree of transparency.D. The EPL service is also referred to as E-lin

Answer: C,D



Question No 6:

Which three statements are true about PPP CHAP authentication? (Choose thre)

A. PPP encapsulation must be enabled globally.B. The LCP phase must be complete and in closed statC. The hostname used by a router for CHAP authentication cannot be changeD. PPP encapsulation must be enabled on the interfacE. The LCP phase must be complete and in open statF. By default, the router uses its hostname to identify itself to the peer.

Answer: D,E,F



Question No 7:

A TCP/IP host is able to transmit small amounts of data (typically less than 1500 bytes), but attempts to transmit larger amounts of data hang and then time out. What is the cause of this problem?

A. A link is flapping between two intermediate devices.B. The processor of an intermediate router is averaging 90 percent utilization.C. A port on the switch that is connected to the TCP/IP host is duplicating traffic and sending it to a portD. that has a sniffer attachedE. There is a PMTUD failure in the network path.

Answer: D



Question No 8:

Which two options are causes of out-of-order packets? (Choose two.)

A. A routing loopB. A router in the packet flow path that is intermittently dropping packetsC. High latencyD. Packets in a flow traversing multiple paths through the networkE. Some packets in a flow being process-switched and others being interrupt-switched on a transit router

Answer: D,E



Question No 9:

Which two statements about packet fragmentation on an IPv6 network are true? (Choose two.)

A. The fragment header is 64 bits long.B. The identification field is 32 bits long.C. The fragment header is 32 bits long.D. The identification field is 64 bits long.E. The mtu must be a minimum of 1280 bytes.F. The fragment header is 48 bits long.

Answer: A, B



Question No 10:

How many hash buckets does Cisco Express Forwarding use for load balancing?

A. 8B. 16C. 24D. 32

Answer: B



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