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1. Network segmentation decreases both performance and security on a network.
a.
True
b.
False
2. Only Class B and Class C networks can be subnetted.
a.
True
b.
False
3. By default, the native VLAN is the same as the default VLAN.
a.
True
b.
False
4. A native VLAN mismatch occurs when two access ports that are connected to each other are both tagging
traffic with different VLAN IDs.
a.
True
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b.
False
5. All that is needed to provide communication between two VLANs is a DHCP relay agent.
a.
True
b.
False
6. Network segmentation at Layer 2 of the OSI model is accomplished using VLANs.
a.
True
b.
False
7. A /24 CIDR block is equivalent to a 255.255.255.0 subnet mask.
a.
True
b.
False
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8. IPv6 addressing does not utilize classful addressing, therefore every IPv6 address is classless.
a.
True
b.
False
9. An unmanaged switch can still support the creation of VLANs, provided there is an interface for
configuration.
a.
True
b.
False
10. In order to identify the transmissions that belong to each VLAN, a switch will add a tag to Ethernet frames
that identifies the port through which they arrive at the switch.
a.
True
b.
False
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11. A network with a CIDR notation of /26 would have what subnet mask?
a.
255.255.255.0
b.
255.255.255.192
c.
255.255.255.224
d.
255.255.255.240
12. A network with 10 bits remaining for the host portion will have how many usable host addresses?
a.
510
b.
1022
c.
2046
d.
4192
13. An interface that manages traffic from multiple VLANs is known by what term?
a.
access port
b.
aggregation port
c.
trunk port
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d.
egress port
14. Which of the following suggestions can help prevent VLAN hopping attacks on a network?
a.
Install an additional switch to isolate traffic.
b.
Disable auto trunking and move native VLANs to unused VLANs.
c.
Install a router to process the untagged traffic on the VLAN.
d.
Use MAC address filtering.
15. With VTP, where is the VLAN database stored?
a.
On the router responsible for maintaining the VTP database.
b.
On the switch that is known as the stack master.
c.
On the switch that is configured as the trunk root.
d.
On the designated VLAN server for the network.
16. What IEEE standard specifies how VLAN information appears in frames and how switches interpret that
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information?
a.
802.1c
b.
802.1Q
c.
802.1V
d.
802.1d
17. In an IPv6 address, what do the first four blocks or 64 bits of the address represent?
a.
The usable host portion of the network.
b.
The site prefix or global routing prefix.
c.
The broadcast domain for the configured host ID.
d.
The MAC address of the router assigning the host ID.
18. On certain Cisco products, what command can be used to create and send helper messages that support
several types of UDP traffic, including DHCP, TFTP, DNS, and TACACS+?
a.
ip create helper server
b.
ip new helper
c.
set ip helper address
d.
ip helper-address
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19. When an 802.1Q tag is added to an Ethernet frame, where is it placed?
a.
It is inserted between the preamble and the destination address.
b.
It is inserted between the destination and the source addresses.
c.
It is inserted between the source address and the Ethernet type field.
d.
It is appended to the end of the frame.
20. How large is the 802.1Q tag that is added to an Ethernet frame when using VLANs?
a.
4 bytes
b.
8 bytes
c.
12 bytes
d.
20 bytes
21. On a Cisco switch, what would the security association identifier be for VLAN 13?
a.
1013
b.
5013
c.
100013
d.
1000130
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22. What command will set the native VLAN on a Juniper switch port?
a.
switchport trunk native vlan
b.
switchport set native vlan
c.
config native vlan
d.
set native-vlan-id
23. You are working on a Cisco switch and need to learn what VLANs exist on the switch. Which command
will list the current VLANs recognized by the switch?
a.
get vlans
b.
show vlan
c.
list switch-vlans
d.
show vlandb
24. Given a host IP address of 172.16.1.154 and a subnet mask of 255.255.254.0, what is the network ID for this
host?
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a.
172.16.0.0
b.
172.16.1.0
c.
172.16.2.0
d.
172.0.0.0
25. What is the maximum number of host IP addresses that can exist in a Class B network?
a.
1022
b.
8190
c.
32,766
d.
65,534
26. Which of the following terms is commonly used to describe a VLAN configuration in which one router
connects to a switch that supports multiple VLANs?
a.
router-on-a-stick
b.
branched router
c.
router overloading
d.
router-on-a-branch
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27. When dealing with a Cisco switch, what is NOT one of the pre-established VLANs?
a.
VLAN 1
b.
VLAN 1001
c.
VLAN 1003
d.
VLAN 1005
28. A subnet of 255.255.248.0 can be represented by what CIDR notation?
a.
/18
b.
/20
c.
/21
d.
/29
29. When using IPv6, what would a /64 network likely be assigned to?
a.
A regional Internet registry.
b.
A large Internet service provider.
c.
A very large organization.
d.
A smaller organization or business.
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30. What does the VLAN Trunk Protocol (VTP) do?
a.
It shares trunking information amongst switches that participate.
b.
It shares VLAN database information amongst switches that participate.
c.
It is the protocol used by a trunk port for establishing a trunk with another switch.
d.
It is the protocol that defines how VLAN tagging is accomplished in an Ethernet network.
31. Which of the following statements regarding IPv6 subnetting is NOT accurate?
a.
IPv6 addressing uses no classes, and is therefore classless.
b.
IPv6 does not use subnet masks.
c.
A single IPv6 subnet is capable of supplying 18,446,744,073,709,551,616 IPv6 addresses.
d.
The largest IPv6 subnet capable of being created is a /64.
32. If the EUI-64 standard is used, what part of an IPv6 address is affected?
a.
The first four blocks of the address.
b.
The last four blocks of the address.
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c.
The middle four blocks of the address.
d.
All blocks of the address are affected.
33. How many /64 subnets can be created within a /56 prefix?
a.
256
b.
512
c.
1024
d.
2048
34. What is NOT one of the ways in which networks are commonly segmented?
a.
by geographic location
b.
by departmental boundaries
c.
by device types
d.
by device manufacturer
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35. An IP address of 192.168.18.73/28 has what network ID?
a.
192.168.16.0
b.
192.168.18.64
c.
192.168.18.32
d.
192.168.18.0
36. Subtracting an interesting octet value from 256 yields what number?
a.
network ID
b.
subnet ID
c.
magic number
d.
host ID
37. You have been tasked with the creation and design of a network that must support a minimum of 5000
hosts. Which network accomplishes this goal?
a.
10.3.0.0/19
b.
172.20.50.0/23
c.
192.168.0.0/20
d.
10.90.0.0/22
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38. How many subnets can a /48 site prefix support?
a.
256 subnets
b.
16384 subnets
c.
65,536 subnets
d.
131,072 subnets
39. By default, when using classful addressing, how many bits exist in the host portion of a Class A address?
a.
8
b.
16
c.
24
d.
32
40. What subnet mask can be used to segment the 172.16.0.0 network to allow for a minimum of 6 subnets
while maximizing the number of hosts per subnet?
a.
255.255.248.0
b.
255.255.224.0
c.
255.255.192.0
d.
255.255.128.0
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41. What are some of the different reasons to use VLANs?
42. What is the difference between a default VLAN and a native VLAN?
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43. How do unmanaged switches and managed switches differ from each other?
44. When a hacker attempts to perform a VLAN hopping attack, what are the two approaches likely to be used?
45. What is a Variable Length Subnet Mask (VLSM), and how is it created?
46. How does the logical process of combining bits known as ANDing work?
47. In 1993, the IETF devised a shorthand method for identifying network and host bits in an IP address. What
is this method, and how do you use it?
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48. How does a DHCP relay agent allow a centrally managed DHCP server to handle assignments for multiple
subnets?
49. Where does the term trunk originate from, and how does it apply to modern networking?
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50. What are some common configuration errors that can occur when configuring VLANs?