Cisco 100-101 Online Practice Questions and Exam Preparation

Cisco 100-101 Online Questions & Answers

• Question 111:

  Refer to the exhibit.

  

  What two things can the technician determine by successfully pinging from this computer to the IP address 172.16.236.1? (Choose two)

  A. The network card on the computer is functioning correctly.
  B. The default static route on the gateway router is correctly configured.
  C. The correct default gateway IP address is configured on the computer.
  D. The device with the IP address 172.16.236.1 is reachable over the network.
  E. The default gateway at 172.16.236.1 is able to forward packets to the internet.
  A. The network card on the computer is functioning correctly.
  D. The device with the IP address 172.16.236.1 is reachable over the network.

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  The source and destination addresses are on the same network therefore, a default gateway is not necessary for communication between these two addresses.

• Question 112:

  At which layer of the OSI model does the protocol that provides the information that is displayed by the show cdp neighbors command operate?

  A. application
  B. transport
  C. network
  D. physical
  E. data link
  E. data link

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  http://computernetworkingnotes.com/cisco-devices-administration-and-configuration/cisco- discoveryprotocol.html CDP is a device discovery protocol that runs over Layer 2 (the data link layer) on all Cisco- manufactured devices (routers, bridges, access servers, and switches) and allows network management applications to discover Cisco devices that are neighbors of already known devices. With CDP, network management applications can learn the device type and the Simple Network Management Protocol (SNMP) agent address of neighboring devices running lower-layer, transparent protocols. CDP allows devices to share basic configuration information without even configuring any protocol specific information and is enabled by default on all interfaces. CDP is a Datalink Protocol occurring at Layer 2 of the OSI model. CDP is not routable and can only go over to directly connected devices. CDP is enabled, by default, on all Cisco devices. CDP updates are generated as multicasts every 60 seconds with a hold- down period of 180 seconds for a missing neighbor. The no cdp run command globally disables CDP, while the no cdp enable command disables CDP on an interface. Use show cdp neighbors to list out your directly connected Cisco neighboring devices. Adding the detail parameter will display the layer-3 addressing configured on the neighbor.

• Question 113:

  R1 is configured with the default configuration of OSPF. From the following list of IP addresses configured on R1, which address will the OSPF process select as the router ID?

  

  A. 192.168.0.1
  B. 172.16.1.1
  C. 172.16.2.1
  D. 172.16.2.225
  A. 192.168.0.1

  ---

  The Router ID (RID) is an IP address used to identify the router and is chosen using the following sequencE.

  +

  The highest IP address assigned to a loopback (logical) interface. + If a loopback interface is not defined, the highest IP address of all active router's physical interfaces will be chosen.

  +

  The router ID can be manually assigned

  In this case, because a loopback interface is not configured so the highest active IP address 192.168.0.1 is chosen as the router ID.

• Question 114:

  Refer to the exhibit.

  

  What kind of cable should be used to make each connection that is identified by the numbers shown?

  A. 1 - Ethernet Crossover cable 2 - Ethernet straight-through cable 3 - Fiber Optic cable 4 - Rollover cable
  B. 1 - Ethernet straight-through cable 2 - Ethernet straight-through cable 3 - Serial cable 4 - Rollover cable
  C. 1 - Ethernet rollover cable 2 - Ethernet crossover cable 3 - Serial cable 4 - Null-modem cable
  D. 1 - Ethernet straight-through cable 2 - Ethernet Crossover cable 3 - Serial cable 4 - Rollover cable
  E. 1 - Ethernet straight-through cable 2 - Ethernet Crossover cable 3 - Serial cable 4 - Ethernet Straight-through cable
  B. 1 - Ethernet straight-through cable 2 - Ethernet straight-through cable 3 - Serial cable 4 - Rollover cable

• Question 115:

  Which layer of the OSI model controls the reliability of communications between network devices using flow control, sequencing and acknowledgments?

  A. Physical
  B. Data-link
  C. Transport
  D. Network
  C. Transport

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• Question 116:

  Refer to the exhibit.

  

  A technician is troubleshooting a host connectivity problem. The host is unable to ping a server connected to Switch_A. Based on the results of the testing, what could be the problem?

  A. A remote physical layer problem exists.
  B. The host NIC is not functioning.
  C. TCP/IP has not been correctly installed on the host.
  D. A local physical layer problem exists.
  D. A local physical layer problem exists.

• Question 117:

  What are two common TCP applications? (Choose two.)

  A. TFTP
  B. SMTP
  C. SNMP
  D. FTP
  E. DNS
  B. SMTP
  D. FTP

  ---

  SMTP uses TCP port 25, while FTP uses TCP ports 20 and 21. http:// pentestlab.wordpress.com/2012/03/05/common-tcpip-ports/

• Question 118:

  How many bits are contained in each field of an IPv6 address?

  A. 24
  B. 4
  C. 8
  D. 16
  D. 16

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  http://www.cisco.com/en/US/technologies/tk648/tk872/technologies_white_paper0900aecd8026 003d.pdf One of the key advantages IPv6 brings is the exponentially larger address space. The following will outline the basic address architecture of IPv6. 128-bit-long addresses Represented in hexadecimal format: Uses CIDR principles: prefix/prefix length x:x:x:x:x:x:x:x, where x is a 16-bit hex field The last 64 bits are used for the interface ID

• Question 119:

  SIMULATION

  

  Correct Answer. Router>enable
  Router>enable

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  1)Set hostname:

  Router#config terminal Router(config)#hostname Apopka

  2) Enable-secret password (cisco10):

  Apopka(config)#enable secret cisco10

  3) Set the console password to RouterPass:

  Apopka(config)#line console 0 Apopka(config-line)#password RouterPass Apopka(config-line)#login Apopka(config-line)#exit

  4) Set the Telnet password to scan90:

  Apopka(config)#line vty 0 4 Apopka(config-line)#password scan90 Apopka(config-line)#login Apopka(config-line)#exit

  5) Configure Ethernet interface (on the right) of router Apopka:

  The subnet mask of the Ethernet network 209.165.201.0 is 27. From this subnet mask, we can find out the increment by converting it into binary form, that is /27 = 1111 1111.1111 1111.1111 1111.1110 0000. Pay more attention to the last bit 1 because it tells us the increment, using the formula: Increment = 2place of the last bit 1 (starts counting from 0,from right to left), in this case increment = 25 = 32. Therefore: Increment: 32 Network address: 209.165.201.0 Broadcast address: 209.165.201.31 (because 209.165.201.32 is the second subnetwork, so the previous IP - 209.165.201.31 - is the broadcast address of the first subnet). -> The second assignable host address of this subnetwork is 209.165.201.2/27 Assign the second assignable host address to Fa0/0 interface of Apopka router: Apopka(config)#interface Fa0/0 Apopka(config-if)#ip address 209.165.201.2 255.255.255.224 Apopka(config-if)#no shutdown Apopka(config-if)#exit

  6) Configure Serial interface (on the left) of router Apopka:

  Using the same method to find out the increment of the Serial network:

  Serial network 192.0.2.128/28:

  Increment: 16 (/28 = 1111 1111.1111 1111.1111 1111.1111 0000)

  Network address: 192.0.2.128 (because 8 * 16 = 128 so 192.0.2.128 is also the network address of this subnet)

  Broadcast address: 192.0.2.143

  -> The last assignable host address in this subnet is 192.0.2.142/28.

  Assign the last assignable host address to S0/0/0 interface of Apopka router:

  Apopka(config)#interface S0/0/0 (or use interface S0/0 if not successful)

  Apopka(config-if)#ip address 192.0.2.142 255.255.255.240

  Apopka(config-if)#no shutdown

  Apopka(config-if)#exit

  7) Configure RIP v2 routing protocol:

  Apopka(config)#router rip Apopka(config-router)#version 2 Apopka(config-router)#network 209.165.201.0 Apopka(config-router)#network 192.0.2.128 Apopka(config-router)#end Save the configuration: Apopka#copy running-config startup-config Finally, you should use the ping command to verify all are working properly!

• Question 120:

  Which two characteristics describe the access layer of the hierarchical network design model? (Choose two.)

  A. layer 3 support
  B. port security
  C. redundant components
  D. VLANs
  E. PoE
  B. port security
  D. VLANs

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  http://www.ciscopath.com/content/61/

  http://www.mcmcse.com/cisco/guides/hierarchical_model.shtml Access layer The main purpose of the access layer is to provide direct connection to devices on the network and controlling which devices are allowed to communicate over it.

  The access layer interfaces with end devices, such as PCs, printers, and IP phones, to provide access to the rest of the network. The access layer can include routers, switches, bridges, hubs, and wireless access points (AP).

  Switch features in the Access layer:

  

  Port security

  

  VLANs

  

  Fast Ethernet/Gigabit Ethernet

  

  Power over Ethernet (PoE)

  

  Link aggregation

  

  Quality of Service (QoS)