Cisco 100-101 Online Practice Questions and Exam Preparation

Cisco 100-101 Online Questions & Answers

• Question 171:

  An administrator is working with the 192.168.4.0 network, which has been subnetted with a /26 mask. Which two addresses can be assigned to hosts within the same subnet? (Choose two.)

  A. 192.168.4.61
  B. 192.168.4.63
  C. 192.168.4.67
  D. 192.168.4.125
  E. 192.168.4.128
  F. 192.168.4.132
  C. 192.168.4.67
  D. 192.168.4.125

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  Only the values of host with 67 and 125 fall within the range of /26 CIDR subnet mask, all others lie beyond it.

• Question 172:

  Refer to the exhibit.

  

  A network has been planned as shown. Which three statements accurately describe the areas and devices in the network plan? (Choose three.)

  A. Network Device A is a switch.
  B. Network Device B is a switch.
  C. Network Device A is a hub.
  D. Network Device B is a hub.
  E. Area 1 contains a Layer 2 device.
  F. Area 2 contains a Layer 2 device.
  A. Network Device A is a switch.
  D. Network Device B is a hub.
  E. Area 1 contains a Layer 2 device.

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  Switches use a separate collision domain for each port, so device A must be a switch. Hubs, however, place all ports in the same collision domain so device B is a hub. Switches reside in layer 2 while hubs are layer 1 devices.

• Question 173:

  What is the default administrative distance of OSPF?

  A. 90
  B. 100
  C. 110
  D. 120
  C. 110

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  Administrative distance is the feature that routers use in order to select the best path when there are two or more different routes to the same destination from two different routing protocols. Administrative distance defines the reliability of a

  routing protocol. Each routing protocol is prioritized in order of most to least reliable (believable) with the help of an administrative distance value.

  Default Distance Value Table

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

  

• Question 174:

  Refer to the exhibit.

  

  The two connected ports on the switch are not turning orange or green. What would be the most effective steps to troubleshoot this physical layer problem? (Choose three.)

  A. Ensure that the Ethernet encapsulations match on the interconnected router and switch ports.
  B. Ensure that cables A and B are straight-through cables.
  C. Ensure cable A is plugged into a trunk port.
  D. Ensure the switch has power.
  E. Reboot all of the devices.
  F. Reseat all cables.
  B. Ensure that cables A and B are straight-through cables.
  D. Ensure the switch has power.
  F. Reseat all cables.

• Question 175:

  Refer to the exhibit.

  

  The junior network support staff provided the diagram as a recommended configuration for the first phase of a four-phase network expansion project. The entire network expansion will have over 1000 users on 14 network segments and has been allocated this IP address space.

  192.168.1.1 through 192.168.5.255

  192.168.100.1 through 192.168.100.255

  What are three problems with this design? (Choose three.)

  A. The AREA 1 IP address space is inadequate for the number of users.
  B. The AREA 3 IP address space is inadequate for the number of users.
  C. AREA 2 could use a mask of /25 to conserve IP address space.
  D. The network address space that is provided requires a single network-wide mask.
  E. The router-to-router connection is wasting address space.
  F. The broadcast domain in AREA 1 is too large for IP to function.
  A. The AREA 1 IP address space is inadequate for the number of users.
  C. AREA 2 could use a mask of /25 to conserve IP address space.
  E. The router-to-router connection is wasting address space.

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  The given IP addresses of areas 1 and 3 along with network masks of 24 cannot accommodate 500 users so are inadequate, while the area 2 is having over capacity so its network mask can be reduced to 25 to accommodate the only 60 users it has.

• Question 176:

  Refer to the exhibit.

  

  PC1 pings PC2. What three things will CORE router do with the data that is received from PC1? (Choose three.)

  A. The data frames will be forwarded out interface FastEthernet0/1 of CORE router.
  B. The data frames will be forwarded out interface FastEthernet1/0 of CORE router.
  C. CORE router will replace the destination IP address of the packets with the IP address of PC2.
  D. CORE router will replace the MAC address of PC2 in the destination MAC address of the frames.
  E. CORE router will put the IP address of the forwarding FastEthernet interface in the place of the source IP address in the packets.
  F. CORE router will put the MAC address of the forwarding FastEthernet interface in the place of the source MAC address.
  B. The data frames will be forwarded out interface FastEthernet1/0 of CORE router.
  D. CORE router will replace the MAC address of PC2 in the destination MAC address of the frames.
  F. CORE router will put the MAC address of the forwarding FastEthernet interface in the place of the source MAC address.

• Question 177:

  Refer to the exhibit.

  

  A network associate has configured OSPF with the command:

  City(config-router)# network 192.168.12.64 0.0.0.63 area 0

  After completing the configuration, the associate discovers that not all the interfaces are participating in OSPF. Which three of the interfaces shown in the exhibit will participate in OSPF according to this configuration statement? (Choose three.)

  A. FastEthernet0 /0
  B. FastEthernet0 /1
  C. Serial0/0
  D. Serial0/1.102
  E. Serial0/1.103
  F. Serial0/1.104
  B. FastEthernet0 /1
  C. Serial0/0
  D. Serial0/1.102

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  The "network 192.168.12.64 0.0.0.63 equals to network 192.168.12.64/26. This network has:

  + Increment: 64 (/26= 1111 1111.1111 1111.1111 1111.1100 0000) + Network address: 192.168.12.64 + Broadcast address: 192.168.12.127 Therefore all interface in the range of this network will join OSPF.

• Question 178:

  What is the network address for the host with IP address 192.168.23.61/28?

  A. 192.168.23.0
  B. 192.168.23.32
  C. 192.168.23.48
  D. 192.168.23.56
  E. 192.168.23.60
  C. 192.168.23.48

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  Convert bit-length prefix to quad-dotted decimal representation, then from it find the number of bits used for subnetting you can find previously calculated number of subnets by separating subnets each having value of last bit used for subnet masking Find that your IP address is in which subnet, that subnet's first address is network address and last address is broadcast address. Based on above steps the answer is option C

• Question 179:

  What is the subnet address for the IP address 172.19.20.23/28?

  A. 172.19.20.0
  B. 172.19.20.15
  C. 172.19.20.16
  D. 172.19.20.20
  E. 172.19.20.32
  C. 172.19.20.16

• Question 180:

  

  Select two options which are security Issues which need to be modified before RouterA is used? (Choose two.)

  A. unencrypted weak password is configured to protect privilege mode
  B. inappropriate wording in banner message
  C. the virtual terminal lines have a weak password configured
  D. virtual terminal lines have a password, but it will not be used
  E. configuration supports un-secure web server access
  B. inappropriate wording in banner message
  D. virtual terminal lines have a password, but it will not be used

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  This answer can be done by simulation only, don't know user name password and banner message etc