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CSAR - Computer Networks - Test questions

Total questions: 12

Worksheet time: 14mins

Name
Class
Date
1.
In an captured ethernet frame the following IP source address was found: 4F 64 FF 93 - What is the decimal notation?
a)
50.64.99.93
b)
255.255.255.0
c)
40.99.200.99
d)
79.100.255.147
2.
The IP Address FE80::C001:37FF:FE6C:1 is a...
a)
Global Unicast Adress
b)
Loopback Address
c)
Link local Address
d)
Multicast Address
3.
Q3:The IP Address 2001:db8:a0b:12f0::1 is a...
a)
Global Unicast Adress
b)
Loopback Address
c)
Link local Address
d)
Multicast Address
4.

What is the subnet mask of an IP Address using CIDR addressing 145.93.113.70/26 ?

a)

255.255.255.192

b)

255.255.255.0

c)

255.255.255.26

d)

255.255.255.73

5.
Which of the following is NOT an asymmetrical encryption method?
a)
PGP
b)
RSA
c)
DES
d)
DSA
6.
A public key will be calculated by taking ...
a)
Two random numbers
b)
A sequence of random numbers
c)
A sequence of prime numbers
d)
Two prime numbers
7.
A PC has the ip 99.72.60.42. To which network class does the network of the PC belong to?
a)
Class A
b)
Class B
c)
Class C
d)
Class D
8.

A PC has the ip 199.1.78.2. To which network class does the network of the PC belong to?

a)

Class A

b)

Class B

c)

Class C

d)

Class D

9.
How many hosts and networks are in 156.34.1.44 ?
a)
Hosts: 128 Networks: 2097152
b)
Hosts: 256 Networks: 2097152
c)
Hosts: 65536 Networks: 16384
d)
Hosts: 16777216 Networks: 256
10.
How many hosts can you have with a CIDR of x.x.x.x/30?
a)
65536
b)
4
c)
1073741824
d)
2^30
11.

Given are the two statements about TCP/UDP.

I) TCP is connection oriented and is not reliable, meaning, you cannot be sure that your packets arrive.

II) UDP is Message oriented and should be used e.g. for video live streaming

a)

I and II are incorrect

b)

I and II are correct

c)

I is correct and two is incorrect

d)

I is incorrect and II is correct

12.

Given are the two statements about NAT.

I) NAT is only needed if you are short on public IP addresses

II) NAT is always needed in IPv6 to take care of translation and mapping of external and internal IP Addresses

a)

I and II are incorrect

b)

I and II are correct

c)

I is correct and II is incorrect

d)

I is incorrect and II is correct