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AUT Networking 1 (One) - 405706
Authors- Petteri Kaskenpalo, Nurul Sarkar

Moderator- Krassie Petrova


Each individual message ordered costs 0.50 cents per message

Code for ALL messages in a group is at 0.50 cents for the 1st msg and 0.30 cents for all other messages->

e.g. 5 messages in total = .50 cents + 4 X .30 cents = $1.70 (instead of $2.50 if all five were downloaded on their own)

Download a PDF file of the message list below for your computer or to print out and use.

The questions have been grouped into sets of 5 messages. This does not overload the SIM card or memory on your cellphone and allows you to study a small group of messages at a time. It is also more economical to download.

Work with other students in your course and co-ordinate what messages you download and forward them to each other to reduce costs. Use the small gaps of time in your day (waiting for a bus, traveling to Uni, etc.) to 'snack on study' with the StudyTXT messages.

Message #
Message Description
Abbreviations used in the message
TXT this code to 396
ALL
 Group 1 Code for group and ALL messages in this group at 0.50 cents for the 1st msg and 0.30 cents for all other messages--->
netOneA
1
 What is a router?

4wards = forwards
netOneA1
2
 Do routers have IP addresses? If so, how many? IP=Internet protocol
netOneA2
3
 How many IP addresses might a router have? IP=Internet protocol
netOneA3
4

What is the 32-bit binary equivalent of the IP address 223.1.3.27?

 

  
netOneA4
5

Suppose there are three routers between a source host and a destination host. Ignoring fragmentation, an IP datagram sent from the source host to the destination host will travel over how many interfaces?

IP=Internet protocol
netOneA5
Message #
Message Description
Abbreviations used in the message
TXT this code to 396
ALL
 Group 2 Code for group and ALL messages in this group at 0.50 cents for the 1st msg and 0.30 cents for all other messages--->
netOneB
1
 Suppose there are three routers between a source host and a destination host. How many forwarding tables will be indexed to move an IP datagram from the source to the destination? IP=Internet protocol
netOneB1
2
 Host A sends Host B a TCP segment encapsulated in an IP datagram. How does the network layer in Host B know it should pass the segment to TCP rather than to UDP?

TCP=transmission control protocol

IP=Internet protocol

UDP=user datagram protocol
netOneB2
3
 It has been said that when IPv6 tunnels through IPv4 routers, IPv6 treats the IPv4 tunnels as line-layer protocols. Do you agree with this statement? Why or why not?

IPv6=Internet protocol version 6

IPv4= Internet protocol version 4

bcause=because
netOneB3
4
 What problem does NAT address? NAT = network address translation
netOneB4
5
 What is a link state routing algorithm?  
netOneB5
Message #
Message Description
Abbreviations used in the message
TXT this code to 396
ALL
Group 3
 Code for group and ALL messages in this group at 0.50 cents for the 1st msg and 0.30 cents for all other messages--->
netOneC
1
 What is a distance vector routing algorithm?

4ward=forward

DVRA = distance-vector routing algorithm
netOneC1
2
 What is an AS?

AS=autonomous system

RP=routing protocol
netOneC2
3
 How has the hierarchical organization of the Internet made it possible to scale to millions of users? AS=autonomous system
netOneC3
4
 Is it necessary that every autonomous system to use the same intra-AS routing algorithm – why or why not?

AS=autonomous system

RA = routing algorithm
netOneC4
5
 List two reasons why, if all the links in the Internet were to provide a reliable delivery service, the TCP reliable delivery service would still be needed? IP = Internet protocol
netOneC5
Message #
Message Description
Abbreviations used in the message
TXT this code to 396
ALL
Group 4
Code for group and ALL messages in this group at 0.50 cents for the 1st msg and 0.30 cents for all other messages--->
netOneD
1
 What are some of the possible services that a link-layer protocol can offer to the network layer?  
netOneD1
2
 What is a switch?  
netOneD2
3
 What is a hub?  
netOneD3
4
 Describe polling protocols using the analogy of cocktail party interactions.  
netOneD4
5
 Describe token-passing protocols using the analogy of cocktail party interactions.
netOneD5
Message #
Message Description
Abbreviations used in the message
TXT this code to 396
ALL
Group 5
Code for group and ALL messages in this group at 0.50 cents for the 1st msg and 0.30 cents for all other messages--->
netOneE
1
 Why would the token-ring protocol be inefficient if a LAN had a very large perimeter?  
netOneE1
2
 How big is the MAC address space?  
netOneE2
3
 How big is the IPv4 address space? IPv4 = Internet protocol version 4
netOneE3
4
 How big is the IPv6 address space? IPv6 = Internet protocol version 6
netOneE4
5
 Why is an ARP query sent within a broadcast frame?

ARP = address resolution protocol

bcause= because
netOneE5
Message #
Message Description
Abbreviations used in the message
TXT this code to 396
ALL
Group 6
Code for group and ALL messages in this group at 0.50 cents for the 1st msg and 0.30 cents for all other messages--->
netOneF
1
 Why is an ARP response sent within a frame with a specific destination MAC address?

ARP = address resolution protocol

bcause= because
netOneF1
2
 Compare the frame structures for 10BaseT, 100BaseT and Gigabit Ethernet. How do they differ?  
netOneF2
3
 What is CSMA?  
netOneF3
4
 What is CSMA/CD?  
netOneF4
5
 What will a station suing CSMA/CD do if the channel is busy?  
netOneF5
Message #
Message Description
Abbreviations used in the message
TXT this code to 396
ALL
Group 7
 Code for group and ALL messages in this group at 0.50 cents for the 1st msg and 0.30 cents for all other messages--->
netOneG
1
 What will a station suing CSMA/CD do if it detects collision during transmission?  
netOneG1
2
 Describe the role of the beacon frames in 802.11 AP = access point
netOneG2
3
 What are the methods that are available to authenticate users for 802.11 networks.  
netOneG3
4
 True for false: Before a 802.11 station transmits a data frame, it must first send an RTS frame and receive a corresponding CTS frame.

RTS = request to send

CTS = clear to send

bfore = before
netOneG4
5
 Why are acknowledgments used in 802.11 but not in wired Ethernet? bcause = because
netOneG5
Message #
Message Description
Abbreviations used in the message
TXT this code to 396
ALL
Group 8
 Code for group and ALL messages in this group at 0.50 cents for the 1st msg and 0.30 cents for all other messages--->
netOneH
1
 True or false: Ethernet and 802.11 use the same frame structure.  
netOneH1
2
 What is message confidentiality?

th = the

txt = text

msg = message

canot = cannot

netOneH2
3
 What is message integrity?  
netOneH3
4
 How are message confidentiality and message integrity different from each other?  
netOneH4
5
 What is the difference between an active and a passive intruder?  
netOneH5
Message #
Message Description
Abbreviations used in the message
TXT this code to 396
ALL
Group 9
 Code for group and ALL messages in this group at 0.50 cents for the 1st msg and 0.30 cents for all other messages--->
neOne1i
1
 What is an important difference between a symmetric key system and a public key one?
netOnei1
2
 What is the purpose of a nonce in an authentication protocol?
netOnei2
3
 What does it mean to say that a nonce is a once-in-a-lifetime value?
netOnei3
4
 What is the man-in-the-middle attack?

MiM = Man in the middle

attackr = attacker

betwn = between

netOnei4
5
 Why can man-in-the-middle attacks be particularly pernicious
netOnei5
Message #
Message Description
Abbreviations used in the message
TXT this code to 396
ALL
Group 10
 Code for group and ALL messages in this group at 0.50 cents for the 1st msg and 0.30 cents for all other messages--->
netOneJ
1
 What does it mean for a signed document to be verifiable?  
netOneJ1
2
 What does it mean for a signed document to be nonforgeable?  
netOneJ2
3
 What does it mean for a signed document to be nonrepudiable?  
netOneJ3
4
 In what way does a message digest provide a better message integrity check than a checksum such as the Internet checksum?  
netOneJ4
5
 In what way does a public-key encrypted message digest provide a better digital signature than using the public-key encrypted message?  
netOneJ5
Message #
Message Description
Abbreviations used in the message
TXT this code to 396
ALL
Group 11
 Code for group and ALL messages in this group at 0.50 cents for the 1st msg and 0.30 cents for all other messages--->
netOneK
1
 Does the message associated with a message digest need to be encrypted?  
netOneK1
2
 What is a key distribution centre?  
netOneK2
3
 What is a certification authority? CA = certification authority
netOneK3
Message #
Message Description
Abbreviations used in the message
TXT this code to 396