ITN od 42-81

42. 42Which subnet would include the address 192.168.1.96 as a usable host address?

• • 192.168.1.64/26

• • 192.168.1.32/27

• • 192.168.1.32/28

• • 192.168.1.64/29

Answer explanation

58. Match the type of threat with the cause. (Not all options are used.)

a - poor handling of key electrical compontnts (electrostatic discharge), lack of critical spare parts, poor cabling, and poor labeling.

b - unauthorized access resulting in loss of data,

c - temperature extremes (too hot or too cold) or humidity extremes (too wet or too dry)

d - physical damage to servers, routers, switches, cabling plant, and workstations

e - voltage spikes, insufficient supply voltage (brownouts), unconditioned power (noise), and total power loss

• a-enviromental threats, b-NONE, c-maintenance threats, d-hardware threats, e-electrical threats

• a-electrical threats, b-maintenance threats, c-NONE, d-hardware threats, e-enviromental threats

• a-maintenance threats, b-NONE, c-enviromental threats, d-hardware threats, e-electrical threats

• a-hardware threats, b-maintenance threats, c-electrical threats, d-NONE, e-enviromental threats

43. Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)

• • This host does not have a default gateway configured.

• • There are 4 hops between this device and the device at 192.168.100.1.

• • There is connectivity between this device and the device at 192.168.100.1.

• • The connectivity between these two hosts allows for videoconferencing calls.

• • The average transmission time between the two hosts is 2 milliseconds.

44. Which two statements describe how to assess traffic flow patterns and network traffic types using a protocol analyzer? (Choose two.)

• • Capture traffic on the weekends when most employees are off work.

• • Capture traffic during peak utilization times to get a good representation of the different traffic types.

• • Only capture traffic in the areas of the network that receive most of the traffic such as the data center.

• • Perform the capture on different network segments.

• • Only capture WAN traffic because traffic to the web is responsible for the largest amount of traffic on a network.

45. What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command?

• • All router interfaces will be automatically activated.

• • The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages.

• • Each router interface will generate an IPv6 link-local address.​

• • It statically creates a global unicast address on this router.​

46. Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.)

• application

• network

• data link or transport

• session

• presentation

47. Refer to the exhibit. If PC1 is sending a packet to PC2 and routing has been configured between the two routers, what will R1 do with the Ethernet frame header attached by PC1?

• • nothing, because the router has a route to the destination network

• • open the header and use it to determine whether the data is to be sent out S0/0/0

• • open the header and replace the destination MAC address with a new one

  
  

• • remove the Ethernet header and configure a new Layer 2 header before sending it out S0/0/0

  
  

48. What will happen if the default gateway address is incorrectly configured on a host?

• • The host cannot communicate with other hosts in the local network.

• • The host cannot communicate with hosts in other networks.

• • A ping from the host to 127.0.0.1 would not be successful.

• • The host will have to use ARP to determine the correct address of the default gateway.

• • The switch will not forward packets initiated by the host.

49. What are two features of ARP? (Choose two.)

• • When a host is encapsulating a packet into a frame, it refers to the MAC address table to determine the mapping of IP addresses to MAC addresses.

• • An ARP request is sent to all devices on the Ethernet LAN and contains the IP address of the destination host and its multicast MAC address.

• • If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast.

• • If no device responds to the ARP request, then the originating node will broadcast the data packet to all devices on the network segment.

• • If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.

50. A network administrator is adding a new LAN to a branch office. The new LAN must support 90 connected devices. What is the smallest network mask that the network administrator can use for the new network?

• • 255.255.255.128

• • 255.255.255.240

• • 255.255.255.248

• • 255.255.255.224