1) In the Transmission Control Protocol, what happens to bytes not acknowledged

Question

1) In the Transmission Control Protocol, what happens to bytes not acknowledged within a specified time period?

They are dropped

They are retransmitted

An ICMP host unreachable message is sent

None of the above

2) Which of these is not true of IP?

Payload is of variable size, up to 65,535-bytes.

IPv4 has 32 bits of addressable space.

IPv6 has 128 bits of addressable space.

IP has guaranteed delivery.

3) Which of these is NOT a typical cloud service offering?

Software as a service (SaaS)

Platform as a service (PaaS)

Infrastructure as a Service (IaaS)

Authentication as a Service (AaaS)

4) All of the following are potentially advantages of cloud computing, EXCEPT:

Data stored in cloud reduces risk of data loss

Processing is done on server side, reducing need for local resources

High bandwidth communications are needed

Security templates can all be managed/deployed from a central site

5) Security hardening includes all of the following, EXCEPT:

Eliminating unnecessary services

Eliminating unnecessary users

Eliminating unnecessary network connections

Eliminating unnecessary security protections

6) What am I doing with the following commands in Linux:

> ifconfig wlan0 down

> ifconfig wlan0 hw ether 12:34:56:78:90:ab

> ifconfig wlan0 up

Making the wi-fi interface send out a TCP sequence

Checking the configuration of the wi-fi network

Causing a wi-fi denial of service attack

Changing the MAC address of my wi-fi network interface card

Explanation / Answer

1) In the Transmission Control Protocol, what happens to bytes not acknowledged within a specified time period?

solutionj:They are retransmitted

2)2) Which of these is not true of IP?

solution:IP has guaranteed delivery..

3_)Which of these is NOT a typical cloud service offering?

solution:Authentication as a Service (AaaS)

4)4) All of the following are potentially advantages of cloud computing, EXCEPT:

solution:High bandwidth communications are needed

5) Security hardening doesnot includes

solution:Eliminating unnecessary users

6)6) What am I doing with the following commands in Linux:
> ifconfig wlan0 down
> ifconfig wlan0 hw ether 12:34:56:78:90:ab
> ifconfig wlan0 up

solution:Changing the MAC address of my wi-fi network interface card

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