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100-105 — Free Practice Questions

10 free sample questions from a bank of 87, with the correct answers and explanations. No signup required — start practising right now.

1An administrator is working with the 192.168.4.0 netwrok, which has been subnetted with a /26 mask. Which two addresses can be assigned to hosts within the same subnet? (Choose two.)
  • 192.168.4.67
  • 192.168.4.61
  • 192.168.4.128
  • 192.168.4.132
  • 192.168.4.125
  • 192.168.4.63
Answer:
2Refer 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.)
100-105 question 2
  • The AREA 1 IP address space is inadequate for the number of users.
  • The AREA 3 IP address space is inadequate for the number of users.
  • AREA 2 could use a mask of /25 to conserve IP address space.
  • The network address space that is provided requires a single network-wide mask.
  • The router-to-router connection is wasting address space.
  • The broadcast domain in AREA 1 is too large for IP to function.
Answer:
3Which MTU size can cause a baby giant error?
  • 1500
  • 9216
  • 1600
  • 1518
Answer: C
4Refer to the exhibit. When running OSPF, what would cause router A not to form an adjacency with router B?
100-105 question 4
  • The loopback addresses are on different subnets.
  • The values of the dead timers on the routers are different.
  • Route summarization is enabled on both routers.
  • The process identifier on router A is different than the process identifier on router B.
Answer: B
5Which of the following are types of flow control? (Choose three.)
  • buffering
  • cut-through
  • windowing
  • congestion avoidance
  • load balancing ACD
Answer:
6In which two ways does TCP differ from UDP? (Choose two.)
  • TCP provides synchronized communication.
  • TCP segments are essentially datagrams.
  • TCP provides sequence numbering of packets.
  • TCP uses broadcast delivery.
  • TCP provides best effort delivery.
Answer:
7Which NTP command configures the local device as an NTP reference clock source?
  • ntp peer
  • ntp broadcast
  • ntp master
  • ntp server C
Answer:
8What OSPF command, when configured, will include all interfaces into area 0?
  • network 0.0.0.0 255.255.255.255 area 0
  • network 0.0.0.0 0.0.0.0 area 0
  • network 255.255.255.255 0.0.0.0 area 0
  • network all-interfaces area 0 A
Answer:
9Instructions - For both the Router and the Switch the simulated console mode needs to start and remain in enabled mode. RouterA and SwitchA have been configured to operate in a private network which will connect to the Internet. You have been asked to review the configuration prior to cabling and implementation. This task requires the use of various IOS commands to access and inspect the running configuration of RouterA and SwitchA. No configuration changes are necessary. You will connect to RouterA and SwilchA via the console devices that are attached to each. There are 4 multiple-choice questions with this task. Be sure to answer all of them before leaving this item. In order to score the maximum points you will need to have accessed both SwitchA and RouterA. NOTE: The configuration command has been disabled for both the router and switch in this simulation. Which two of the following are true regarding the configuration of RouterA? (Choose two.)
100-105 question 9
  • at least 5 simultaneous remote connections are possible
  • only telnet protocol connections to RouterA are supported
  • remote connections to RouterA using telnet will succeed
  • console line connections will never time out due to inactivity
  • since DHCP is not used on Fa0/1 there is no need to use the NAT protocol
Answer:
10The OSPF Hello protocol performs which of the following tasks? (Choose two.)
  • It provides dynamic neighbor discovery.
  • It detects unreachable neighbors in 90 second intervals.
  • It maintains neighbor relationships.
  • It negotiates correctness parameters between neighboring interfaces.
  • It uses timers to elect the router with the fastest links as the designated router.
  • It broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF.
Answer:
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