Cisco 200-120 Online Practice Questions and Exam Preparation

Cisco 200-120 Online Questions & Answers

• Question 251:

  A network administrator creates a layer 3 EtherChannel, bundling four interfaces into channel group 1. On what interface is the IP address configured?

  A. the port-channel 1 interface
  B. the highest number member interface
  C. all member interfaces
  D. the lowest number member interface
  A. the port-channel 1 interface

  ---

  To create an EtherChannel interface and assign its IP address and subnet mask, use the following steps beginning in global configuration mode:

  

  The IP address is assigned to the port channel interface, not the underlying physical member interfaces.

  Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2948gand4908g/12-0_7_w5_15d/configuration/guide/config/ether_ch.html

• Question 252:

  Refer to the exhibit.

  

  A network administrator is adding two new hosts to SwitchA. Which three values could be used for the configuration of these hosts? (Choose three.)

  A. host A IP address: 192.168.1.79
  B. host A IP address: 192.168.1.64
  C. host A default gateway: 192.168.1.78
  D. host B IP address: 192.168.1.128
  E. host B default gateway: 192.168.1.129
  F. host B IP address: 192.168.1.190
  A. host A IP address: 192.168.1.79
  C. host A default gateway: 192.168.1.78
  F. host B IP address: 192.168.1.190

  ---

  It's a "router-on-a-stick" configuration. Which means each host in the VLAN must corresponds with the VLAN configured on the sub-interfaces. VLAN 10 is configured on fa0/0.10 and VLAN 20 on fa0/0.20. So each hosts in VLAN 10 must use

  fa0/0.10 IP address as their default gateway, each hosts must also be in the same subnet as fa0/0.10 IP ?same with hosts in VLAN 20. So find out the usable IP addresses on each sub-interfaces ?for 192.168.1.78 /27: 192.168.1.65 ?.94 and

  for 192.168.1.130 /26: 192.168.1.128 ?.190.

  Host A (using port 6 ?VLAN 10) must use IP 192.168.1.79, default gateway 192.168.1.78.

  Host B (using port 9 ?VLAN 20) must use IP 192.168.1.190, default gateway 192.168.1.130.

• Question 253:

  When you are troubleshooting an ACL issue on a router, which command would you use to verify which interfaces are affected by the ACL?

  A. show ip access-lists
  B. show access-lists
  C. show interface
  D. show ip interface
  E. list ip interface
  D. show ip interface

  ---

  Incorrect answer:

  show ip access-lists does not show interfaces affected by an ACL.

• Question 254:

  What are three factors a network administrator must consider before implementing Netflow in the network? (Choose three.)

  A. CPU utilization
  B. where Netflow data will be sent
  C. number of devices exporting Netflow data
  D. port availability
  E. SNMP version
  F. WAN encapsulation
  A. CPU utilization
  B. where Netflow data will be sent
  C. number of devices exporting Netflow data

  ---

  NetFlow has a reputation for increasing CPU utilization on your network devices. Cisco's performance testing seems to indicate that newer hardware can accommodate this load pretty well, but you will still want to check it out before you turn on the feature. Some symptoms of high CPU utilization are very large jitter and increased delay. Services running on the device may also be affected. Another thing to keep in mind is the amount of data you're going to be sending across the network. Depending on how much traffic you have and how you configure it, the traffic can be substantial. For example, you may not want to send NetFlow data from a datacenter switch to a NetFlow collector on the other side of a small WAN circuit. Also bear in mind that the flows from aggregating large numbers of devices can add up.

  Reference: http://searchenterprisewan.techtarget.com/tip/How-the-NetFlow-protocol-monitors-your-WAN

• Question 255:

  What is the function of the command switchport trunk native vlan 999 on a Cisco Catalyst switch?

  A. It creates a VLAN 999 interface.
  B. It designates VLAN 999 for untagged traffic.
  C. It blocks VLAN 999 traffic from passing on the trunk.
  D. It designates VLAN 999 as the default for all unknown tagged traffic.
  B. It designates VLAN 999 for untagged traffic.

  ---

  Configuring the Native VLAN for Untagged Traffic

  A trunk port configured with 802.1Q tagging can receive both tagged and untagged traffic. By default, the switch forwards untagged traffic in the native VLAN configured for the port. The native VLAN is VLAN 1 by default.

• Question 256:

  Which condition indicates that service password-encryption is enabled?

  A. The local username password is encrypted in the configuration.
  B. The enable secret is encrypted in the configuration.
  C. The local username password is in clear text in the configuration.
  D. The enable secret is in clear text in the configuration.
  A. The local username password is encrypted in the configuration.

• Question 257:

  An administrator is trying to ping and telnet from SwitchC to RouterC with the results shown below.

  

  Click the console connected to RouterC and issue the appropriate commands to answer the questions.

  

  

  What would be the effect of issuing the command ip access-group 114 in to the fa0/0 interface?

  A. Attempts to telnet to the router would fail.
  B. It would allow all traffic from the 10.4.4.0 network.
  C. IP traffic would be passed through the interface but TCP and UDP traffic would not.
  D. Routing protocol updates for the 10.4.4.0 network would not be accepted from the fa0/0 interface.
  B. It would allow all traffic from the 10.4.4.0 network.

  ---

  From the output of access-list 114: access-list 114 permit ip 10.4.4.0 0.0.0.255 any we can easily understand that this access list allows all traffic (ip) from 10.4.4.0/24 network

• Question 258:

  What does a Layer 2 switch use to decide where to forward a received frame?

  A. source MAC address
  B. source IP address
  C. source switch port
  D. destination IP address
  E. destination port address
  F. destination MAC address
  F. destination MAC address

  ---

  When a frame is received, the switch looks at the destination hardware address and finds the interface if it is in its MAC address table. If the address is unknown, the frame is broadcast on all interfaces except the one it was received on.

• Question 259:

  DRAG DROP

  Drag the security features on the left to the specific security risks they help protect against on the right. (Not all options are used.)

  Select and Place:

  

  

• Question 260:

  Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding state?

  A. converged
  B. redundant
  C. provisioned
  D. spanned
  A. converged

  ---

  Spanning Tree Protocol convergence (Layer 2 convergence) happens when bridges and switches have transitioned to either the forwarding or blocking state. When layer 2 is converged, root bridge is elected and all port roles (Root, Designated and Non-Designated) in all switches are selected.