ISM4220 Exam Questions

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_________ 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


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