Cisco 200-120 Online Practice Questions and Exam Preparation

Cisco 200-120 Online Questions & Answers

• Question 151:

  Which command reveals the last method used to powercycle a router?

  A. show reload
  B. show boot
  C. show running-config
  D. show version
  D. show version

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  The "show version" command can be used to show the last method to powercycle (reset) a router.

  

• Question 152:

  What will happen if a private IP address is assigned to a public interface connected to an ISP?

  A. Addresses in a private range will not be routed on the Internet backbone.
  B. Only the ISP router will have the capability to access the public network.
  C. The NAT process will be used to translate this address to a valid IP address.
  D. A conflict of IP addresses happens, because other public routers can use the same range.
  A. Addresses in a private range will not be routed on the Internet backbone.

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  Private RFC 1918 IP addresses are meant to be used by organizations locally within their own network only, and cannot be used globally for Internet use.

• Question 153:

  Refer to the exhibit.

  

  Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses?

  A. 255.255.255.0
  B. 255.255.254.0
  C. 255.255.252.0
  D. 255.255.248.0
  B. 255.255.254.0

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  310 hosts < 512 = 29 -> We need a subnet mask of 9 bits 0 -> 1111 1111.1111 1111.1111 1110.0000 0000 -> 255.255.254.0

• Question 154:

  A Cisco router is booting and has just completed the POST process. It is now ready to find and load an IOS image. What function does the router perform next?

  A. It checks the configuration register.
  B. It attempts to boot from a TFTP server.
  C. It loads the first image file in flash memory.
  D. It inspects the configuration file in NVRAM for boot instructions.
  A. It checks the configuration register.

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  Default (normal) Boot Sequence Power on Router - Router does POST - Bootstrap starts IOS load - Check configuration register to see what mode the router should boot up in (usually 0x2102 to read startup-config in NVRAM / or 0x2142 to start in "setup-mode") - check the startup-config file in NVRAM for boot-system commands - load IOS from Flash.

• Question 155:

  Refer to the exhibit.

  

  Based on the exhibited routing table, how will packets from a host within the 192.168.10.192/26 LAN be forwarded to 192.168.10.1?

  A. The router will forward packets from R3 to R2 to R1.
  B. The router will forward packets from R3 to R1 to R2.
  C. The router will forward packets from R3 to R2 to R1 AND from R3 to R1.
  D. The router will forward packets from R3 to R1.
  C. The router will forward packets from R3 to R2 to R1 AND from R3 to R1.

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  From the routing table we learn that network 192.168.10.0/30 is learned via 2 equal-cost paths (192.168.10.9 and192.168.10.5) -> traffic to this network will be load-balancing.

• Question 156:

  Refer to the exhibit.

  

  Given the output shown from this Cisco Catalyst 2950, what is the reason that interface FastEthernet 0/10 is not the root port for VLAN 2?

  A. This switch has more than one interface connected to the root network segment in VLAN 2.
  B. This switch is running RSTP while the elected designated switch is running 802.1d Spanning Tree.
  C. This switch interface has a higher path cost to the root bridge than another in the topology.
  D. This switch has a lower bridge ID for VLAN 2 than the elected designated switch.
  C. This switch interface has a higher path cost to the root bridge than another in the topology.

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  Since the port is in the blocked status, we must assume that there is a shorter path to the root bridge elsewhere.

• Question 157:

  Based on the network shown in the graphic Which option contains both the potential networking problem and the protocol or setting that should be used to prevent the problem?

  

  A. routing loops, hold down timers
  B. switching loops, split horizon
  C. routing loops, split horizon
  D. switching loops, VTP
  E. routing loops, STP
  F. switching loops, STP
  F. switching loops, STP

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  The Spanning-Tree Protocol (STP) prevents loops from being formed when switches or bridges are interconnected via multiple paths. Spanning-Tree Protocol implements the 802.1D IEEE algorithm by exchanging BPDU messages with other switches to detect loops, and then removes the loop by shutting down selected bridge interfaces. This algorithm guarantees that there is one and only one active path between two network devices.

• Question 158:

  Refer to the exhibit.

  

  An attempt to deny web access to a subnet blocks all traffic from the subnet. Which interface command immediately removes the effect of ACL 102?

  A. no ip access-class 102 in
  B. no ip access-class 102 out
  C. no ip access-group 102 in
  D. no ip access-group 102 out
  E. no ip access-list 102 in
  D. no ip access-group 102 out

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  The "ip access-group" is used to apply and ACL to an interface. From the output shown, we know that the ACL is applied to outbound traffic, so "no ip access-group 102 out" will remove the effect of this ACL.

• Question 159:

  What are three characteristics of satellite Internet connections? (Choose three.)

  A. Their upload speed is about 10 percent of their download speed.
  B. They are frequently used by rural users without access to other high-speed connections.
  C. They are usually at least 10 times faster than analog modem connections.
  D. They are usually faster than cable and DSL connections.
  E. They require a WiMax tower within 30 miles of the user location.
  F. They use radio waves to communicate with cellular phone towers.
  A. Their upload speed is about 10 percent of their download speed.
  B. They are frequently used by rural users without access to other high-speed connections.
  C. They are usually at least 10 times faster than analog modem connections.

• Question 160:

  Which protocol is an open standard protocol framework that is commonly used in VPNs, to provide secure end-to-end communications?

  A. RSA
  B. L2TP
  C. IPsec
  D. PPTP
  C. IPsec

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  IPSec is a framework of open standards that provides data confidentiality, data integrity, and data authentication between participating peers at the IP layer. IPSec can be used to protect one or more data flows between IPSec peers.