Cisco 100-101 Online Practice Questions and Exam Preparation

Cisco 100-101 Online Questions & Answers

• Question 181:

  ROUTER# show ip route 192.168.12.0/24 is variably subnetted, 9 subnets, 3 masks C 192.168.12.64 /28 is directly connected, Loopback1 C 192.168.12.32 /28 is directly connected, Ethernet0 C 192.168.12.48 /28 is directly connected, Loopback0 O

  192.168.12.236 /30 [110/128] via 192.168.12.233, 00:35:36, Serial0 C 192.168.12.232 /30 is directly connected, Serial0 O 192.168.12.245 /30 [110/782] via 192.168.12.233, 00:35:36, Serial0 O 192.168.12.240 /30 [110/128] via 192.168.12.233, 00:35:36, Serial0 O 192.168.12.253 /30 [110/782] via 192.168.12.233, 00:35:37, Serial0 O 192.168.12.249 /30 [110/782] via 192.168.12.233, 00:35:37, Serial0 O 192.168.12.240/30 [110/128] via 192.168.12.233, 00:35:36, Serial 0

  To what does the 128 refer to in the router output above?

  A. OSPF cost
  B. OSPF priority
  C. OSPF hop count
  D. OSPF ID number
  E. OSPF administrative distance
  A. OSPF cost

  ---

  The first parameter is the Administrative Distance of OSPF (110) while the second parameter is the cost of OSPF.

• Question 182:

  What is the default administrative distance of the OSPF routing protocol?

  A. 90
  B. 100
  C. 110
  D. 120
  E. 130
  F. 170
  C. 110

  ---

  Default Distance Value Table

  This table lists the administrative distance default values of the protocols that Cisco supports:

  

  If the administrative distance is 255, the router does not believe the source of that route and does not install the route in the routing table.

• Question 183:

  What is the purpose of the switchport command?

  Switch(config-if)# switchport port-security maximum 1 Switch(config-if)# switchport port-security mac- address 0018.DE8B.4BF8

  A. It ensures that only the device with the MAC address 0018.DE8B.4BF8 will be able to connect to the port that is being configured.
  B. It informs the switch that traffic destined for MAC address 0018.DE8B.4BF8 should only be sent to the port that is being configured.
  C. It will act like an access list and the port will filter packets that have a source or destination MAC of 0018.DE8B.4BF8.
  D. The switch will shut down the port of any traffic with source MAC address of 0018.DE8B.4BF8.
  A. It ensures that only the device with the MAC address 0018.DE8B.4BF8 will be able to connect to the port that is being configured.

• Question 184:

  On a Cisco switch, which protocol determines if an attached VoIP phone is from Cisco or from another vendor?

  A. RTP
  B. TCP
  C. CDP
  D. UDP
  C. CDP

  ---

  http://computernetworkingnotes.com/cisco-devices-administration-and-configuration/cisco- discoveryprotocol.html The Cisco Unified IP Phone uses CDP to communicate information such as auxiliary VLAN ID, per port power management details, and Quality of Service (QoS) configuration information with the Cisco Catalyst switch. Cisco Discovery Protocol (CDP) is a proprietary protocol designed by Cisco to help administrators collect information about both locally attached and remote devices. By using CDP, you can gather hardware and protocol information about neighbor devices, which is useful info for troubleshooting the network. CDP messages are generated every 60 seconds as multicast messages on each of its active interfaces. The information shared in a CDP packet about a Cisco device includes the following: Name of the device configured with the hostname command IOS software version Hardware capabilities, such as routing, switching, and/or bridging Hardware platform, such as 2600, 2950, or 1900 The layer-3 address(es) of the device The interface the CDP update was generated on

• Question 185:

  Refer to the exhibit.

  

  Host A can communicate with Host B but not with Hosts C or D. How can the network administrator solve this problem?

  A. Configure Hosts C and D with IP addresses in the 192.168.2.0 network.
  B. Install a router and configure a route to route between VLANs 2 and 3.
  C. Install a second switch and put Hosts C and D on that switch while Hosts A and B remain on the original switch.
  D. Enable the VLAN trunking protocol on the switch.
  B. Install a router and configure a route to route between VLANs 2 and 3.

  ---

  Two VLANs require a router in between otherwise they cannot communicate through a simple switch mechanism

• Question 186:

  Refer to the exhibit.

  

  Host A is sending a packet to Host B for the first time. What destination MAC address will Host A use in the ARP request?

  A. 192.168.0.1
  B. 172.16.0.50
  C. 00-17-94-61-18-b0
  D. 00-19-d3-2d-c3-b2
  E. ff-ff-ff-ff-ff-ff
  F. 255.255.255.255
  E. ff-ff-ff-ff-ff-ff

  ---

  Reference:

  http://www.technicalhowto.com/protocols/arp/arp.html

  For the initial communication, Host A will send a broadcast ARP (all F's) to determine the correct address to use to reach the destination.

  ARP sends an Ethernet frame called an ARP request to every host on the shared link-layer legmen. The Ethernet header includes the source host MAC address and a destination address of all Fs representing a broadcast frame. The ARP

  request contains the sender's MAC and IP address and the target (destination) IP address. The target's MAC address is set to all 0s.

  ARP Request

  

• Question 187:

  Refer to the exhibit.

  

  All devices attached to the network are shown. How many collision domains are present in this network?

  A. 2
  B. 3
  C. 6
  D. 9
  E. 15
  E. 15

  ---

  A switch uses a separate collision domain for each port so there are a total of 9 for each device shown. In addition to this, the switch to switch connections (3) are a separate collision domain. Finally, we add the switch to router connections

  (2) and the router to router connection (1) for a total of 15.

• Question 188:

  Select and Place:

  Select and Place:

  

  

• Question 189:

  How many addresses will be available for dynamic NAT translation when a router is configured with the following commands?

  Router(config)#ip nat pool TAME 209.165.201.23 209.165.201.30 netmask 255.255.255.224 Router (config)#ip nat inside source list 9 pool TAME

  A. 7
  B. 8
  C. 9
  D. 10
  E. 24
  F. 32
  B. 8

  ---

  209.165.201.23 to 209.165.201.30 provides for 8 addresses.

• Question 190:

  Refer to the exhibit.

  

  SwitchA receives the frame with the addressing shown in the exhibit. According to the command output also shown in the exhibit, how will SwitchA handle this frame?

  A. It will drop the frame.
  B. It will forward the frame out port Fa0/6 only.
  C. It will forward the frame out port Fa0/3 only.
  D. It will flood the frame out all ports.
  E. It will flood the frame out all ports except Fa0/3.
  E. It will flood the frame out all ports except Fa0/3.

  ---

  When frame receives the frame, it checks the source address on MAC table if MAC address found in MAC table it tries to forward if not in MAC table adds the Address on MAC table. After checking the source address, it checks the destination address on MAC table, if MAC address found on MAC table it forwards to proper ports otherwise floods on all ports except the source port.