Cisco 200-125 Online Practice Questions and Exam Preparation

Cisco 200-125 Online Questions & Answers

• Question 821:

  Which three statements about DWDM are true? (Choose three)

  A. It allows a single strand of fiber to support bidirectional communications
  B. It is used for long-distance and submarine cable systems
  C. It can multiplex up to 256 channels on a single fiber
  D. It supports both the SDH and SONET standards
  E. Each channel can carry up to a 1-Gbps signal
  F. It supports simplex communications over multiple strands of fiber
  A. It allows a single strand of fiber to support bidirectional communications
  B. It is used for long-distance and submarine cable systems
  D. It supports both the SDH and SONET standards

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  Explanation: ref: https://www.cisco.com/en/US/products/hw/optical/ps2011/products_data_sheet09186a008 012a900.html

• Question 822:

  How does a Cisco IP phone handle untagged traffic that it receives from an attached PC ?

  A. It drops the traffic
  B. It tags the traffic with the native VLAN
  C. It tags the traffic with the default VLAN
  D. It allows the traffic to pass through unchanged
  D. It allows the traffic to pass through unchanged

• Question 823:

  Which two QoS tools can provide congestion management?(Choose two)

  A. CBWFQ
  B. FRTS
  C. CAR
  D. PQ
  A. CBWFQ
  D. PQ

• Question 824:

  Which QOS feature can drop traffic that exceeds the committed access rate?

  A. weighted fair queuing
  B. FIFO
  C. policing
  D. shaping
  C. policing

• Question 825:

  Which statement about DHCP snooping is true?

  A. it blocks traffic from DHCP servers on untrusted interfaces.
  B. it can be configured on switches and routers.
  C. it allows packets from untrusted ports if their source MAC address is found in the binding table.
  D. it uses DHCPDiscover packets to identify DHCP servers.
  A. it blocks traffic from DHCP servers on untrusted interfaces.

• Question 826:

  The network administrator needs to address seven LANs. RIP version 1 is the only routing protocol in use on the network and subnet 0 is not being used. What is the maximum number of usable IP addresses that can be supported on each LAN if the organization is using one class C address block?

  A. 8
  B. 6
  C. 30
  D. 32
  E. 14
  F. 16
  C. 30

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  Since there is one class C network that means 256 total IP addresses. Since we need 7 LAN blocks and we cannot use the first one (subnet 0) we take 256/8=32 hosts. However, since we need to reserve the network and broadcast addresses for each of these subnets, only 30 total IP addresses are usable.

• Question 827:

  Refer to the exhibit,

  

  you determine that Computer A cannot ping Computer Which reason for the problem is most likely true?

  A. The Subnet mask for Computer A is incorrect
  B. The subnet mask for computer B is incorrect
  C. The default gateway address for Computer A is incorrect.
  D. The default gateway address for computer B is incorrect.
  A. The Subnet mask for Computer A is incorrect

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  255.255.255.224 =/27

• Question 828:

  Which statement describes the effect of the exec-timeout 30 command?

  A. The router maintains a user session indefinitely after it is active for 30 seconds.
  B. The router disconnects the user session if it is inactive for 30 minutes.
  C. The router maintains a user session indefinitely after it is active for 30 minutes.
  D. The router disconnects a user session if it is inactive for 30 seconds.
  B. The router disconnects the user session if it is inactive for 30 minutes.

• Question 829:

  Which address class includes network 191.168.0.1/27?

  A. Class C
  B. Class B
  C. Class D
  D. Class A
  B. Class B

• Question 830:

  A security administrator wants to profile endpoints and gain visibility into attempted authentications. Which 802.1x mode allows these actions?

  A. Monitor mode
  B. High-Security mode
  C. Low-impact mode
  D. Closed mode
  A. Monitor mode