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Different VLANs can be connected together, but likely only by passing through an IP router.Select one:TrueFalse

 A DNS query issued via IPv4 can only return IPv4 addresses, IPv6 addresses can only be returned if the DNS query is done via IPv6.

Select one:

True

False


For a CIDR router's forwarding table entry with destination a.b.c.d/k to be selected, how many bits of the destination IP X have to match?

Select one:

a. < k bits

b. k bits

c. > k bits

d. all the bits of D

e. it depends on the address class of X


Your company has a LAN in its downtown office and has now set up a LAN in the manufacturing plant in the suburbs. To enable everyone to share data and resources between the two LANs, what type of device is needed to connect them but keep them as separate LANs?

Select one:

a. modem

b. cable

c. hub

d. router

e. non-VLAN switch


Currently, most Wi-Fi networks support maximum data bit rates in excess of 1 Gbps.

Select one:

True

False


UDP is sometimes the protocol of choice for flooding attacks on the Internet because it is easy to send UDP packets with spoofed source address.

Select one:

True

False


The legacy mechanism for designating the IPv4 network and host address portions was to make the division according to the first few bits. Which one of the following is not one of the resulting the IPv4 address classes?

Select one:

a. class A

b. class B

c. class C

d. class D

e. class E


Copper wires have lower attenuation compared to fiber optic cables.

Select one:

True

False


Ethernet switches can be used to connect two computers that do not use network layer protocols (e.g. to exchange raw Ethernet frames).

Select one:

True

False


The Internet checksum, used by IP, TCP and UDP, is formed by taking the ________ of the 16-bit words of the message:

Select one:

a. two's complement sum

b. one's complement sum

c. logical XOR

d. logical OR

e. logical AND



Routers are used to connect two computers that use different connection-oriented transport protocols.

Select one:

True

False


Which feature allows TCP to reliably and accurately track the transmission of data from source to destination


Select one:

a. encapsulation

b. connectionless services

c. best effort delivery

d. large windows

e. connection establishment

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Step-by-step explanation

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