21. The main purpose of a __________ is to reduce attenuation, although some mod
ID: 651697 • Letter: 2
Question
21. The main purpose of a __________ is to reduce attenuation, although some models provide other functions in addition to this.
A) repeater B) hub C) router D) NIC
22. A Layer 1 device whose primary purpose is to receive incoming packets from one or more locations and broadcast the packets to one or more devices on the network is called a _________.
A) switch B) hub C) router D) NIC
23. A Layer 2 device whose primary purpose is to create a point-to-point connection between one of its input ports and one of its output ports is called a _________.
A) switch B) hub C) router D) NIC
24. The device that functions primarity at Layer 2 that can join two similar types of networks so they look like one network (subnet) is called a _________.
A) switch B) gateway C) router D) bridge
25. The device that can connect networks having vastly different organizations and protocols is a _________.
A) switch B) gateway C) router D) bridge
26. The Layer 3 a device connected to at least two networks that determines the destination to which a packet should be forwarded is a _________.
A) switch B) gateway C) router D) bridge
27. When obsolete routes can persist in the routing tables, packets can be misrouted or lost. This problem is known as the ________ problem.
A) count-to-infinity B) memory leak C) Ford-Fulkerson D) split horizon
28. _______ routing works best in networks that connect where a large number of users in one location use a centralized host, or gateway.
A) static B) dynamic C) Ford-Fulkerson D) split horizon
29. Analysts worry that cyber warfare might someday be targeted toward: _________.
A) DARPANet B) SCADA systems C) gateway servers D) firewalls
30. Congestive collapse is a problem that is manifested by: _________.
A) firewalls B) NICs C) routers D) SCADA systems
True/False Mark A for True and/or B for False
31. TCP is a connection-oriented protocol.
32. One of the problems that IPv6 is intended to solve is the lack of class A address space.
33. The aggregatable global unicast address format of IPv6 helps keep the size of router tables under control.
34. It is possible for a single host to support both IPv4 and IPv6.
35. Security experts caution that wired equivalent privacy (WEP) is insufficient to block all types of network intrusion.
36. It is possible for a computer with a single logical address to have more than one NIC each with distinct MAC addresses.
37. Switches handle only one packet at a time while hubs can handle multiple incoming and outgoing packets simultaneously.
38. Distance vector routing considers latency in the network before assigning a route to a packet.
39. The Internet of Things (IoT) is used to describe intercommunicating control and sensory nodes.
40. Because SCADA systems pre-date the Internet they not considered part of the IoT.
Explanation / Answer
21. The main purpose of a __________ is to reduce attenuation, although some models provide other functions in addition to this.
A) repeater
22. A Layer 1 device whose primary purpose is to receive incoming packets from one or more locations and broadcast the packets to one or more devices on the network is called a _________.
B) hub
23. A Layer 2 device whose primary purpose is to create a point-to-point connection between one of its input ports and one of its output ports is called a _________.
A) switch
24. The device that functions primarity at Layer 2 that can join two similar types of networks so they look like one network (subnet) is called a _________.
D) bridge
25. The device that can connect networks having vastly different organizations and protocols is a _________.
B) gateway
26. The Layer 3 a device connected to at least two networks that determines the destination to which a packet should be forwarded is a _________.
C) router
27. When obsolete routes can persist in the routing tables, packets can be misrouted or lost. This problem is known as the ________ problem.
A) count-to-infinity
28. _______ routing works best in networks that connect where a large number of users in one location use a centralized host, or gateway.
A) static
29. Analysts worry that cyber warfare might someday be targeted toward: _________.
A) DARPANet
30. Congestive collapse is a problem that is manifested by: _________.
C) routers
True/False Mark A for True and/or B for False
31.
Answer: True
32.
Answer: False
33.
Answer: True
34.
Answer: True
35.
Answer: True
36.
Answer:
37.
Answer: True
38.
Answer: True
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