ISM4220 Exam Questions
_________ VPN's work on layer 3 of the network
All IPsec modes
In the IP header, where is the version located?
First field
As a network administrator, what would you use the subnet portion of your IP range for?
Group hosts in a meaningful way
What type of organizational structure is used to process IP addresses?
Hierarchical Addressing
How many bits is the host segment in an IPv6 address?
- 6 (!) - 64 - 32 (X) - 16 (X)
What is the lowest address in each subnet used for?
-Broadcast (X) -Firmware (X) -TCP/IP -VPN Traffic -DHCP Requests
What is ICANN in charge of?
-Registrar of DNS names
In what version of SNMP were individual usernames and passwords introduced?
3
What is the anticipated speed of the next generation of cell technology (LTE Advanced)
3 Gbps
What WAN connection is present in many homes now?
Broadband
What is the highest address in each subnet used for?
Broadcast
Which of residential WAN service is shared capacity for neighborhoods?
Cable Modern
Hardware compression is the best optimization device for a WAN, what is the second?
Cache Server
What is used to keep copies of current popular files on the local network segment?
Caching Server
What type of request/response will provide the IP address of a named resource?
DNS
The organization is responsible for IP assignments?
IANA
What organization governs DNS registration?
ICANN
The organization IANA is responsible for assigning ___________
IP Addresses
Of the two VPN types discussed which operates on layer 3?
IPSec
There are two types of network traffic that can be problematic when working behind a NAT, from the list below pick the protocol that might have issues with a NAT setup?
IPSec and VolP
Of the address types that we studied what types of address is 128 bits in length
IPv6
In what octet separators are not correctly matched with their addressing types?
IPv6 = colon : MAC = colon : IPv4 = dash - (!) (A + B) (X) IPv4 = dot .
What tool is used for segmenting hosts, dividing the network, or separating traffic?
Subnet
What do ISPs use the PSDN for?
Interconnect with other ISPs
UDP does not support segmentation, what affect does that have on packet size?
Limit
Cell towers connect to _____ for handling calls and inter tower handoffs.
Mobile telephone switching office
What technology uses a header label to make the routing decisions?
Multi Protocol Label Switching
What are the three components of an IP address
Network - Subnet - Host
How long is an IPv6 address?
None of the above (16 octets long or 128 bits)
What effect does IPSec encryption have on firewall inspection?
Passes Without Inspection
What do access lines physically connect the office to?
Point of Presence
When a TCP transmission comes to an abrupt close, what kind of packet is sent?
RST
What is ICANN in charge of?
Registrar of DNS names
Of the two VPN types discussed which operates on layer 4?
SSL/TLS
________ VPN's work on layer 4 of the network
SSL/TLS
___________ VPNs work on layer 4 of the network
SSL/TLS
Name the valid types of VPN's
Secure Layer and IPsec Tunnel
Name the valid types of VPNs
Secure Socket Layer and IPsec Tunnel
Dedicated leased lines are ideal for what type of connections
Secure business to business traffic
ICMP packets can expose the host address within a NAT. What type of problem does this potentially create?
Security
What field of the received frame is the acknowledgement number based on but not equal to?
Sequence
For large networks what technology can be implemented that will reduce both CapEx and OpEx?
Software Defined Networking
Why pay the premium price for a WAN connection compared to using the internet?
To extend LAN functionality to remote facilities Traffic segmentation for the commodity Internet Dedicated bi directional transmission speeds -All of the above
Why is the first field in all IP packets the version ID?
To know how to read the headers properly
The internet is the most well known _______ network
WAN
There are 13 root DNS nodes which cover ___________
World