Cisco 200-125 Online Practice Questions and Exam Preparation

Cisco 200-125 Online Questions & Answers

• Question 1101:

  

  Refer to the exhibit , on R1, which routing protocol is in use on the route to 192.168.10.1?

  A. EIGRP
  B. OSPF
  C. RIP
  D. BGP
  A. EIGRP

• Question 1102:

  refer to the exhibit:

  

  what is the metric for the router from R1 to 192.168.10.1 ?

  A. 2
  B. 90
  C. 110
  D. 52778
  D. 52778

• Question 1103:

  To enable router on a stick on a router subinterface, which two steps must you perform ? choose two

  A. configure full duplex and speed
  B. configure a default to route traffic between subinterfaces
  C. configure the subinterface with an ip address
  D. configure encapsulation dot1q
  E. configure an ip route to the vlan destination network
  C. configure the subinterface with an ip address
  D. configure encapsulation dot1q

• Question 1104:

  Which prompt dose a Cisco switch display when it is running in privileged exec mode?

  A. switch(config-if)#
  B. switch#
  C. switch(config)#
  D. switch>
  B. switch#

• Question 1105:

  Refer to the exhibit.

  

  After HostA pings HostB, which entry will be in the ARP cache of HostA to support this transmission?

  

  A. Exhibit A
  B. Exhibit B
  C. Exhibit C
  D. Exhibit D
  E. Exhibit E
  F. Exhibit F
  A. Exhibit A

  ---

  Host A knows host B is in another network so it will send the pings to its default gateway 192.168.6.1. Host A sends a broadcast frame asking the MAC address of 192.168.6.1. This information (IP and MAC address of the default gateway) is saved in its ARP cache for later use.

• Question 1106:

  Refer to the exhibit.

  

  The network shown in the diagram is experiencing connectivity problems. Which of the following will correct the problems? (Choose two.)

  A. Configure the gateway on Host A as 10.1.1.1.
  B. Configure the gateway on Host B as 10.1.2.254.
  C. Configure the IP address of Host A as 10.1.2.2.
  D. Configure the IP address of Host B as 10.1.2.2.
  E. Configure the masks on both hosts to be 255.255.255.224.
  F. Configure the masks on both hosts to be 255.255.255.240.
  B. Configure the gateway on Host B as 10.1.2.254.
  D. Configure the IP address of Host B as 10.1.2.2.

  ---

  The switch 1 is configured with two VLANs: VLAN1 and VLAN2. The IP information of member Host A in VLAN1 is as follows: Address : 10.1.1.126 Mask : 255.255.255.0 Gateway : 10.1.1.254 The IP information of member Host B in VLAN2 is as follows: Address : 10.1.1.12 Mask : 255.255.255.0 Gateway : 10.1.1.254 The configuration of sub-interface on router 2 is as follows: Fa0/0.1 -- 10.1.1.254/24 VLAN1 Fa0/0.2 -- 10.1.2.254/24 VLAN2 It is obvious that the configurations of the gateways of members in VLAN2 and the associated network segments are wrong. The layer3 addressing information of Host B should be modified as follows: Address : 10.1.2.X Mask : 255.255.255.0

• Question 1107:

  Which protocol is a Cisco proprietary implementation of STP?

  A. CST
  B. RSTP
  C. MSTP
  D. PVST+
  D. PVST+

• Question 1108:

  Which option describes a difference between EIGRP for IPv4 and IPv6?

  A. Only EIGRP for IPv6 advertises all connected networks.
  B. Only EIGRP for IPv6 requires a router ID to be configured under the routing process-
  C. AS numbers are configured in EIGRP but not in EIGRPv3.
  D. Only EIGRP for IPv6 is enabled in the global configuration mode.
  B. Only EIGRP for IPv6 requires a router ID to be configured under the routing process-

  ---

  Router ID - Both EIGRP for IPv4 and EIGRP for IPv6 use a 32-bit number for the EIGRP router ID. The 32-bit router ID is represented in dotted-decimal notation and is commonly referred to as an IPv4 address. If the EIGRP for IPv6 router has not been configured with an IPv4 address, the eigrp router-id command must be used to configure a 32-bit router ID. The process for determining the router ID is the same for both EIGRP for IPv4 and IPv6.

• Question 1109:

  Which statement about slow inter VLAN forwarding is true?

  A. The VLAN is experiencing slowness in the point-to-point collisionless connection.
  B. The VLANs are experiencing slowness because multiple devices are connected to the same hub.
  C. The local VLAN is working normally, but traffic to the alternate VLAN is forwarded slower than expected.
  D. The entire VLAN is experiencing slowness.
  E. The VLANs are experiencing slowness due to a duplex mismatch.
  E. The VLANs are experiencing slowness due to a duplex mismatch.

  ---

  Common Causes of Slow IntraVLAN and InterVLAN Connectivity The symptoms of slow connectivity on a VLAN can be caused by multiple factors on different network layers. Commonly the network speed issue may be occurring on a lower level, but symptoms can be observed on a higher level as the problem masks itself under the term "slow VLAN". To clarify, this document defines the following new terms: "slow collision domain", "slow broadcast domain" (in other words, slow VLAN), and "slow interVLAN forwarding". These are defined in the section Three Categories of Causes, below. In the following scenario (illustrated in the network diagram below), there is a Layer 3 (L3) switch performing interVLAN routing between the server and client VLANs. In this failure scenario, one server is connected to a switch, and the port duplex mode is configured half- duplex on the server side and full-duplex on the switch side. This misconfiguration results in a packet loss and slowness, with increased packet loss when higher traffic rates occur on the link where the server is connected. For the clients who communicate with this server, the problem looks like slow interVLAN forwarding because they do not have a problem communicating to other devices or clients on the same VLAN. The problem occurs only when communicating to the server on a different VLAN. Thus, the problem occurred on a single collision domain, but is seen as slow interVLAN forwarding.

  

  Three Categories of Causes

  The causes of slowness can be divided into three categories, as follows:

  Slow Collision Domain Connectivity

  Collision domain is defined as connected devices configured in a half-duplex port configuration, connected to each other or a hub. If a device is connected to a switch port and full-duplex mode is configured, such a point-to-point connection is

  collisionless. Slowness on such a segment still can occur for different reasons.

  Slow Broadcast Domain Connectivity (Slow VLAN)

  Slow broadcast domain connectivity occurs when the whole VLAN (that is, all devices on the same VLAN) experiences slowness.

  Slow InterVLAN Connectivity (Slow Forwarding Between VLANs) Slow interVLAN connectivity (slow forwarding between VLANs) occurs when there is no slowness on the local VLAN, but traffic needs to be forwarded to an alternate VLAN,

  and it is not forwarded at the expected rate.

  Causes for Network Slowness

  Packet Loss

  In most cases, a network is considered slow when higher-layer protocols (applications) require extended time to complete an operation that typically runs faster. That slowness is caused by the loss of some packets on the network, which

  causes higher-level protocols like TCP or applications to time out and initiate retransmission.

  Hardware Forwarding Issues

  With another type of slowness, caused by network equipment, forwarding (whether Layer 2 [L2] or L3) is performed slowly. This is due to a deviation from normal (designed) operation and switching to slow path forwarding. An example of this is when Multilayer Switching (MLS) on the switch forwards L3 packets between VLANs in the hardware, but due to misconfiguration, MLS is not functioning properly and forwarding is done by the router in the software (which drops the interVLAN forwarding rate significantly).

• Question 1110:

  A BPDU guard is configured on an interface that has PortFast Enable. Which state does the interface enter when it recives a BPDU?

  A. Blocking.
  B. Shutdown.
  C. Listening.
  D. Errdisable.
  D. Errdisable.