Cisco 100-101 Online Practice Questions and Exam Preparation

Cisco 100-101 Online Questions & Answers

• Question 91:

  What is the purpose of assigning an IP address to a switch?

  A. provides local hosts with a default gateway address
  B. allows remote management of the switch
  C. allows the switch to respond to ARP requests between two hosts
  D. ensures that hosts on the same LAN can communicate with each other
  B. allows remote management of the switch

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  Switch is a layer 2 device and doesn't use network layer for packet forwarding. The IP address may be used only for administrative purposes such as Telnet access or for network management purposes.

• Question 92:

  Refer to the exhibit.

  

  Mary is sending an instant message to Robert. The message will be broken into a series of packets that will traverse all network devices. What addresses will populate these packets as they are forwarded from Router1 to Router2?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  E. Option E
  B. Option B

  ---

  The Source and Destination IP address is not going to change. Host 1 IP address will stay as being the source IP and the Host 2 IP address will stay the destination IP address. Those two are not going to change.

  For the MAC address it is going to change each time it goes from one hope to another. (Except switches...

  they don't change anything)

  Frame leaving HOST 1 is going to have a source MAC of Host 1 and a destination MAC of Router 1. Router 1 is going to strip that info off and then will make the source MAC address of Router1's exiting interface, and making Router2's

  interface as the destination MAC address. Then the same will happen... Router2 is going to change the source/destination info to the source MAC being the Router2 interface that it is going out, and the destination will be Host2's MAC

  address.

• Question 93:

  Which IOS command is used to initiate a login into a VTY port on a remote router?

  A. router# login
  B. router# telnet
  C. router# trace
  D. router# ping
  E. router(config)# line vty 0 5
  F. router(config-line)# login
  B. router# telnet

  ---

  VTY ports are telnet ports hence command B will initiate login to the telnet port.

• Question 94:

  Refer to the exhibit.

  

  If the hubs in the graphic were replaced by switches, what would be virtually eliminated?

  A. broadcast domains
  B. repeater domains
  C. Ethernet collisions
  D. signal amplification
  E. Ethernet broadcasts
  C. Ethernet collisions

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  Modern wired networks use a network switch to eliminate collisions. By connecting each device directly to a port on the switch, either each port on a switch becomes its own collision domain (in the case of half duplex links) or the possibility of collisions is eliminated entirely in the case of full duplex links.

• Question 95:

  Which OSI layer header contains the address of a destination host that is on another network?

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

  ---

  Only network address contains this information. To transmit the packets the sender uses network address and datalink address. But the layer 2 address represents just the address of the next hop device on the way to the sender. It is changed on each hop. Network address remains the same.

  

• Question 96:

  Refer to the exhibit.

  

  If the router Cisco returns the given output and has not had its router ID set manually, what value will OSPF use as its router ID?

  A. 192.168.1.1
  B. 172.16.1.1
  C. 1.1.1.1
  D. 2.2.2.2
  D. 2.2.2.2

• Question 97:

  Which command can you use to manually assign a static IPV6 address to a router interface?

  A. ipv6 address PREFIX_1::1/64
  B. ipv6 autoconfig 2001:db8:2222:7272::72/64
  C. ipv6 autoconfig
  D. ipv6 address 2001:db8:2222:7272::72/64
  D. ipv6 address 2001:db8:2222:7272::72/64

• Question 98:

  Some routers have been configured with default routes. What are some of the advantages of using default routes? (Choose two)

  A. They establish routes that will never go down.
  B. They keep routing tables small.
  C. They require a great deal of CPU power.
  D. They allow connectivity to remote networks that are not in the routing table
  E. They direct traffic from the internet into corporate networks.
  B. They keep routing tables small.
  D. They allow connectivity to remote networks that are not in the routing table

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  Cisco administration 101: What you need to know about default routes Reference: http://www.techrepublic.com/article/cisco-administration-101-what-you-need-to-know-about- default-routes/

• Question 99:

  Refer to the exhibit.

  

  The internetwork is using subnets of the address 192.168.1.0 with a subnet mask of 255.255.255.224. The routing protocol in use is RIP version 1. Which address could be assigned to the FastEthernet interface on RouterA?

  A. 192.168.1.31
  B. 192.168.1.64
  C. 192.168.1.127
  D. 192.168.1.190
  E. 192.168.1.192
  D. 192.168.1.190

  ---

  Subnet mask 255.255.255.224 with CIDR of /27 which results in 32 hosts per.

  192.168.1.31 is the broadcast address for sunbet '0' 192.168.1.64 is the network address for subnet '2' 192.168.1.127 is the broadcast address for subnet '3' 192.168.1.192 is the network address for subnet '6'

  

• Question 100:

  An administrator has connected devices to a switch and, for security reasons, wants the dynamically learned MAC addresses from the address table added to the running configuration.

  What must be done to accomplish this?

  A. Enable port security and use the keyword sticky.
  B. Set the switchport mode to trunk and save the running configuration.
  C. Use the switchport protected command to have the MAC addresses added to the configuration.
  D. Use the no switchport port-security command to allow MAC addresses to be added to the configuration.
  A. Enable port security and use the keyword sticky.

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  http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/por t_sec.pdf

  One can configure MAC addresses to be sticky. These can be dynamically learned or manually configured, stored in the address table, and added to the running configuration. If these addresses are saved in the configuration file, the interface does not need to dynamically relearn them when the switch restarts, hence enabling security as desired.