Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

COS 332 Chancellors > Chapter 3 > Flashcards

Chapter 3 Flashcards

1
Q

What are the network-oriented application layer protocols?

A

DNS, SNMP, LDAP, DHCP, RIP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does DNS stand for?

A

Domain name system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the purpose of the DNS?

A

To translate names of computers to addresses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Different domain levels:

A
  • TLD = (top level domain )
    gTLD ( generic TLD )
    ccTLD (country code TLD)
    sTLD (sponsored TLD
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what are some examples of gTLD?

A

.com, .gov and .net

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are some examples of ccTLDs?

A

.za, .sa, .ls, .zm ….

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are some sTLDs?

A

.microsoft, .apple

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

By who is the .za ccTLD controlled by?

A

ZADNA (.za Domain Name Authority)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Who is the authority at the root of the DNS?

A

IANA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How does one determine the owner of a domain?

A

whois www.xxx.co.za

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is a zone file?

A

A data structure that represents info at each node

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is at the core of a zone file?

A

A set of triples (name, record type, address)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is A in a zone file?

A

an address

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is NS in a zone file?

A

name server

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does it mean if an entry is a NS?

A

Go to the server listed to resolve the name.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the 2 ways name resolution may be performed?

A

Recursively or iteratively

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Whats the difference between recursive and iterative name resolution?

A

Recursive = all the work gets done for you
Iterative = you need to follow the path

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

How many root name servers are there?

A

13

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is a fully qualified domain name?

A

Starts at TLD down to domain name of interest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What does SOA mean?

A

Start of authority

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the difference between primary and secondary name servers?

A

Secondary = backup of primary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is copying from the primary name server to the secondary name server called?

A

Zone transfers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Why is a secondary name server needed?

A

To increase fault tolerance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is TTL and what does it indicate?

A

Time to live, how long data has left before it expire (Best before date)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Can records overwrite the TTL set be the SOA?
Yes
26
What does CNAME record do?
Assigns an alias to a domain name
27
Make an alias for www called ftp
ftp IN CNAME www
28
What is a MX record?
A mail exchange record
29
Why is Mx needed and not Only A?
Because A will not determine the destination of the email
30
What does @,MX, and 10 mean in @ IN MX 10 mail
@ = root domain 10 = priority Mx = Mail Exchange
31
Whats the difference between A and AAAA records?
The type of address is stores. AAAA = IPv6
32
What is PTR in a zone file?
Pointer ( for reverse DNS queries )
33
What is a reverse DNS query?
192.168.18.59 PTR www.xx.co.za Lokking up 59.18.168.192.in-addr.arpa ( reverse of name ) yields www.xx.co.za
34
What is the primary bootstrapping protocol?
DHCP ( Dynamic Host Configuration protocol)
35
How are discless computers booted?
TFTP via the network
36
What are the 2 key components for network management?
Agents + manager ( central console to monitor + control agents )
37
What is the challenges of managing networks through agents and managers?
Security + reliability + performance impact
38
What happens with network management if changes are needed on agent nodes?
Manager sends instructions to that specific agent node
39
What is the most popular network management protocol?
SNMP ( Simple Network Management protocol )
40
What are the different commands of a SNMP manager?
Get, GetNext, GetBulk
41
SNMP was developed as part of .....
TCP/IP
42
On what is CMIP based?
ISO OSI protocols
43
What are the directory access protocols?
X.500 X.509 LDAP
44
What is X.500 and who was it developed by?
Directory access protocol Developed by ITU-T
45
Which protocol implements a DIT ( Directory Information Tree)?
x.500
46
What do you call the component that manages the DIT in X.500?
DSA ( Directory System Agent )
47
What does a user use to query the DSA?
DUA ( Directory user agent)
48
How do DSAs communicate with one another?
Using DSP (Directory Systems protocol)
49
Which Directory Access protocol deals with public key cryptography?
X.509
50
What is a certificate tree?
When a CA has a CA that has a CA and so on
51
Why was LDAP developed?
X.500 was too complex
52
How does LDAP arrange info?
In a hierarchical directory
53
What is at the base of a LDAP directory?
Base DN ( base distinguished name )
54
What are the 2 types of gateway protocols?
EGP ( Exterior Gateway protocol ) IGP ( Interior Gateway protocol )
55
What do gateway protocols do?
Determine the best path for packets from one place to another
56
What is the cost of a path called in routing?
The hop count
57
Where does an IGP operate?
Inside of a organizations autonomous systems
58
Where does an EGP operate?
Between organizations autonomous systems
59
What do IGPs base their routing decisions on?
Primarily cost
60
What do EGP base their routing decisions on?
Other factors such as policies rather than cost
61
What is the best known EGP?
BGP ( Border Gateway Protocol )
62
Why dont most people know what a BGP does?
Only used on edge routers of big companies or ISPs
63
What are the 2 IGP protocols?
RIP (Routing information protocol) and OSPF (Open shortest Path First )
64
What algorithm does RIP implement?
Bellman ford
65
What is used as a metric in the bellman ford algorithm?
Hop count
66
How does routers see the others routing tables?
They broadcast it occasionally
67
Study DJikstra + RIP stuffies
68
What does OSPF store?
Topology of the entire network
69
Which IGP uses Dijkstra?
OSPF

COS 332 Chancellors (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions