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1). At least one MAC sublayer protocol guarantees reliable delivery.Select one:TrueFalse

2). Both distance-vector and link-state algorithms are considered ______ routing-update

algorithms, whereas BGP (Border Gateway Protocol) is considered ______ routing.

Select one:

a. interior, exterior

b. exterior, interior

c. IPv4, IPv6

d. classless, classful

e. older, newer


3). Why are port numbers included in the TCP header of a segment?

Select one:

a. to indicate the correct router interface that should be used to forward a segment

b. to identify which switch ports should receive or forward the segment

c. to determine which Layer 3 protocol should be used to encapsulate the data

d. to enable a receiving host to forward the data to the appropriate application

e. to allow the receiving host to assemble the packet in the proper order


4). 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

5). Silly window syndrome is a problem that can occur when data is passed to the sending

TCP entity in large blocks, but an interactive application on the receiving side reads 1

byte at a time.

Select one:

True

False


6). IPv4 multicast addresses remain as the last remnant of the Class A/B/C/... scheme.

Multicast addresses are class:

Select one:

a. A

b. B

c. C

d. D

e. E


7). TCP adds its own checksum because data errors can be introduced within routers

where Data Link Layer checksums do not protect.

Select one:

True

False


Hope I can get answers along with some explanations :)

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