Many network engineers use the service to transfer router and backup router configurations

Port 69 (Trivial File Transfer Protocol)

uses this port to retrieve email

Port 143 (Internet Message Access Protocol 4)

like port 80, is used when you connect to a web server; reserved for secure connections

Port 443 (Secure Hypertext Transfer Protocol)

The most widely used protocol is

Transmission Control Protocol/Internet Protocol (TCP/IP)

used to connect to a news server for use with newsgroups

Port 119 (Network News Transfer Protocol)

enhanced email retrieving protocol; one of the most common email retrieval systems.

Port 110 (Post Office Protocol 3)

was the stnd for moving & copying large files; still used today, but less because of the popularity of HTTP

Ports 20 and 21 (File Transfer Protocol)

Allows different operating systems (OSs) to transfer files between one another

File Transfer Protocol (FTP) - 20 & 21

Email servers listen on this port

Port 25 (Simple Mail Transfer Protocol)

List the six flags of a TCP packet.

ACK and PSH, SYN and URG, FIN, RST

used when you connect to a web server. HTTP is not secure, so most web servers use HTTPS (port 443)

Port 80 (Hypertext Transfer Protocol)

The main protocol for transmitting email messages across the Internet

Simple Mail Transfer Protocol (SMTP) - 25

Primarily used to monitor devices on a network, such as monitoring a router’s state remotely

Simple Network Management Protocol (SNMP) -161

The primary protocol used to communicate over the web

Hypertext Transfer Protocol Secure (HTTPS) - 443

studbud

CSCI 6250 - Module 2

86 termsStudBud Administration

Flashcards86 cardsFPractice quizPHost liveL

Questions 86

Answers

1
Email clients use this port to retrieve email messages from a mail server over a TCP/IP connection
Port 80 (Hypertext Transfer Protocol)
Port 69 (Trivial File Transfer Protocol)
Port 143 (IMAP)
Port 443 (Secure Hypertext Transfer Protocol)
2
The ISN is set at which step of the TCP three-way handshake?
1
1 and 2
1,2,3
1,3
3
Many network engineers use the service to transfer router and backup router configurations
Port 443 (Secure Hypertext Transfer Protocol)
Port 69 (Trivial File Transfer Protocol)
Port 80 (Hypertext Transfer Protocol)
Port 143 (IMAP)
4
uses this port to retrieve email
Port 139 (NetBIOS)
Port 119 (Network News Transfer Protocol)
Port 143 (Internet Message Access Protocol 4)
Port 135 (Remote Procedure Call)
5
where data is encapsulated into segments
Network layer
Application layer
Transport layer
Internet layer
6
Which of the following is not a valid octal number? Octal #s use digits 0-7
3482
5555
7770
4567
7
How many hosts can a CIDR /24 network have?
354
300
254
450
8
Which command verifies the existence of a node on a network?
ping
netstat
nbtstat
ipconfig
9
Enables users to insecurely log on to a remote server and issue commands interactively
Secure Shell (SSH) - 22
Simple Mail Transfer Protocol (SMTP) - 25
Telnet - 23
Internet Relay Chat (IRC) - 6667
10
Enables users to securely log on to a remote server and issue commands interactively
Secure Shell (SSH) - 22
Simple Mail Transfer Protocol (SMTP) - 25
Internet Relay Chat (IRC) - 6667
Telnet - 23
11
responsible for routing packets by using IP addresses
Network layer
Application layer
Internet layer
Transport layer
12
high-order nibble values: 1100
240
192
128
224
13
like port 80, is used when you connect to a web server; reserved for secure connections
Port 443 (Secure Hypertext Transfer Protocol)
Port 69 (Trivial File Transfer Protocol)
Port 80 (Hypertext Transfer Protocol)
Port 143 (IMAP)
14
The most widely used protocol is
network session hijacking
Internet Assigned Numbers Authority (IANA)
protocol
Transmission Control Protocol/Internet Protocol (TCP/IP)
15
used to connect to a news server for use with newsgroups
Port 110 (Post Office Protocol 3)
Port 135 (Remote Procedure Call)
Port 993 (IMAPS)
Port 119 (Network News Transfer Protocol)
16
enhanced email retrieving protocol; one of the most common email retrieval systems.
Port 110 (Post Office Protocol 3)
Port 135 (Remote Procedure Call)
Port 119 (Network News Transfer Protocol)
Port 993 (IMAPS)
17
Represents the physical network pathway and the network interface card
Application layer
Internet layer
Network layer
Transport layer
18
Application-layer protocols are the front end to the lower-layer protocols in TCP/IP stack; what you can see and touch
False
True
19
1–126 1 126 3 16,777,214
Class B
Class C
network address & host address
Class A
20
IPv4 allows for roughly 4.3 billion unique IP addresses.
True
False
21
Gets data packets to and from the App layer by using port numbers; verifies packet delivery using acknowledgments
Application layer
Transport layer
Internet layer
Network layer
22
developed in 1993 and helped prolong the life of IPv4 by allowing for more efficient IP-assignment space
Class C
network address & host address
Class A
CIDR
23
used by the Microsoft NetBIOS Session Service to share resources
Port 119 (Network News Transfer Protocol)
Port 135 (Remote Procedure Call)
Port 139 (NetBIOS)
Port 143 (Internet Message Access Protocol 4)
24
Given an IP address of 192.168.1.17 and a subnet mask of 255.255.255.192, what is host part?
0.0.0.17
192.168.1.0
25
connection-oriented protocol; sender doesn’t send any data to destination node until the destination node acknowledges
FTP
SMTP
UDP
TCP
26
was the stnd for moving & copying large files; still used today, but less because of the popularity of HTTP
Port 53 (Domain Name System)
Ports 20 and 21 (File Transfer Protocol)
Port 22 (Secure Shell)
Port 25 (Simple Mail Transfer Protocol)
27
Allows different operating systems (OSs) to transfer files between one another
Simple Mail Transfer Protocol (SMTP) - 25
File Transfer Protocol (FTP) - 20 & 21
Hypertext Transfer Protocol Secure (HTTPS) - 443
Simple Network Management Protocol (SNMP) -161
28
Email servers listen on this port
Port 22 (Secure Shell)
Port 53 (Domain Name System)
Ports 20 and 21 (File Transfer Protocol)
Port 25 (Simple Mail Transfer Protocol)
29
List the six flags of a TCP packet.
ACK and PSH
SYN and URG
FIN
RST
30
What’s the hexadecimal equivalent of the binary number 1111 1111 ?
EE
DD
255
FF
31
Controls the flow of data, sequencing packets for reassembly, and encapsulating the segment w/TCP or UDP
Transport layer
Application layer
Internet layer
Network layer
32
TCP is a connection-less-oriented protocol
True
False
33
What class is the IP address 172.16.0.1?
Class A
Class C
Class B
Class D
34
IP version 4 (IPv4), still the most widely used version, was developed without security functions in mind.
False
True
35
used when you connect to a web server. HTTP is not secure, so most web servers use HTTPS (port 443)
Port 443 (Secure Hypertext Transfer Protocol)
Port 69 (Trivial File Transfer Protocol)
Port 143 (IMAP)
Port 80 (Hypertext Transfer Protocol)
36
uses encryption & authentication to create a secure chan over unsecure ntwk; secure logons, file trnfr, port forward
Port 53 (Domain Name System)
Port 22 (Secure Shell)
Ports 20 and 21 (File Transfer Protocol)
Port 25 (Simple Mail Transfer Protocol)
37
The main protocol for transmitting email messages across the Internet
Hypertext Transfer Protocol Secure (HTTPS) - 443
File Transfer Protocol (FTP) - 20 & 21
Simple Mail Transfer Protocol (SMTP) - 25
Simple Network Management Protocol (SNMP) -161
38
Primarily used to monitor devices on a network, such as monitoring a router’s state remotely
Simple Mail Transfer Protocol (SMTP) - 25
Simple Network Management Protocol (SNMP) -161
Hypertext Transfer Protocol Secure (HTTPS) - 443
File Transfer Protocol (FTP) - 20 & 21
39
The long-term solution is IPv5 addressing.
False
True
40
When companies assign IP addresses, they must give unique IP address to each network segment that’s separated by router
False
True
41
high-order nibble values: 1000
240
192
224
128
42
logical, not physical, component of a TCP connection and can be assigned to a process that requires network connectivity
port
appliance
IANA
bypass
43
A ping command initially uses which ICMP type code?
Type 14
Type 13
Type 8
Type 0
44
the three components of the TCP/IP three-way handshake.
SYN-ACK
SYN
ACK
FIN
45
The primary protocol used to communicate over the web
File Transfer Protocol (FTP) - 20 & 21
Simple Network Management Protocol (SNMP) -161
Hypertext Transfer Protocol Secure (HTTPS) - 443
Simple Mail Transfer Protocol (SMTP) - 25
46
SYN -> SYN-ACK -> ACK = three-way handshake
False
True
47
An IPv4 address consists of 4 bytes divided into two components:
Class A
network address & host address
Class C
Class B
48
physically moving bits across a medium (whether the medium is copper wire, fiber-optic cables, or wireless)
Internet layer
Transport layer
Application layer
Network layer
49
This layer includes network services and client software.
Application layer
Network layer
Transport layer
Internet layer
50
The netstat command indicates that POP3 is in use on a remote server. Which port is the remote server most likely using?
Port 25
Port 143
Port 80
Port 110
51
Given an IP address of 192.168.1.17 and a subnet mask of 255.255.255.192, what is subnet part?
192.168.1.0
0.0.0.17
52
Where applications and protocols, such as HTTPS and SSH, operate
Transport layer
Internet layer
Application layer
Network layer
53
What protocol is used for reporting or informational purposes?
TCP
IGMP
ICMP
IP
54
high-order nibble values: 1111
128
192
224
240
55
responsible for routing a packet to a destination address.
Internet Control Message Protocol (ICMP)
connectionless
User Datagram Protocol (UDP)
Internet layer of the TCP/IP stack
56
used to send messages related to network operations.
connectionless
Internet Control Message Protocol (ICMP)
User Datagram Protocol (UDP)
Internet layer of the TCP/IP stack
57
an attack that relies on guessing the ISNs of TCP packets
network session hijacking
Internet Assigned Numbers Authority (IANA)
protocol
Transmission Control Protocol/Internet Protocol (TCP/IP)
58
users can connect to websites with URLs instead of IP addresses; When a user enters a URL, the DNS server -> IP address
Port 25 (Simple Mail Transfer Protocol)
Ports 20 and 21 (File Transfer Protocol)
Port 53 (Domain Name System)
Port 22 (Secure Shell)
59
To see the list of well-known ports, visit the _ at www.iana.org
Transmission Control Protocol/Internet Protocol (TCP/IP)
network session hijacking
Internet Assigned Numbers Authority (IANA)
protocol
60
Most of the tools both cyber attackers and security testers use run over _
SSH
TCP
IP
ICMP
61
What port, other than port 110, is used to retrieve email?
80
135
25
143
62
used by Microsoft, critical ops of Microsoft Exchange Server & Active Directory; available in Windows 2000 Srvr & later
Port 119 (Network News Transfer Protocol)
Port 110 (Post Office Protocol 3)
Port 993 (IMAPS)
Port 135 (Remote Procedure Call)
63
What port does DNS use?
25
69
80
53
64
A TCP packet has two 16-bit fields containing
TCP flags
source and destination port numbers
network hijacking session
initial sequence number
65
Enables multiple users to communicate over the Internet in discussion forums
Telnet - 23
Simple Mail Transfer Protocol (SMTP) - 25
Secure Shell (SSH) - 22
Internet Relay Chat (IRC) - 6667
66
Some computer attacks use physical hardware, such as a keylogger.
False
True
67
FTP uses port _ for control
20
21
68
TCP communication can be likened to which of the following?
Bullhorn at a sporting event
Announcement over a loudspeaker
Phone conversation
Driving on a highway
69
32-bit number; tracks packets recv'd by node & allows reassemb large packets that were broken up into smaller packets
network hijacking session
TCP flags
source and destination port numbers
initial sequence number
70
uses IP addresses to route packets to the correct destination network.
Network layer
Internet layer
Transport layer
Application layer
71
What numbering system is used to express IPv6 addresses?
octal
decimal
hexadecmial
binary
72
128–191 2 16,128 2 65,534
Class B
Class C
Class A
network address & host address
73
FTP uses port _ for data transfer
21
20
74
On a Windows computer, what command can you enter to show all open ports being used?
netstat
ifconfig
ipconfig
nbtstat
75
192–223 3 2,097,152 1 254
Class B
Class C
network address & host address
Class A
76
Which protocol offers guaranteed delivery and is connection oriented?
TCP
IP
UDP
TFTP
77
FTP requires entering a logon name and password and is more secure than Trivial File Transfer Protocol (TFTP)
True
False
78
TCP header includes:
initial sequence number
source and destination port numbers
TCP flags
network hijacking session
79
Steps 1 and 2 of the three-way handshake send an ISN.
False
True
80
high-order nibble values: 1110
192
224
240
128
81
fast but unreliable delivery protocol that operates on the Transport layer
User Datagram Protocol (UDP)
connectionless
Internet Control Message Protocol (ICMP)
Internet layer of the TCP/IP stack
82
For computers to communicate online or across an office, they must use the same language, known as a _.
network session hijacking
Transmission Control Protocol/Internet Protocol (TCP/IP)
Internet Assigned Numbers Authority (IANA)
protocol
83
IMAP over SSL/TLS; port 993; secured and preferred over the unsecured version IMAP-143
Port 135 (Remote Procedure Call)
Port 993 (IMAPS)
Port 119 (Network News Transfer Protocol)
Port 110 (Post Office Protocol 3)
84
Which of the following protocols is connectionless?
TCP
SPX
IP
UDP
85
occupies 1 bit of the TCP segment and can be set to 0 (off) or 1 (on).
network hijacking session
initial sequence number
TCP flags
source and destination port numbers
86
UDP is
connectionless
Internet layer of the TCP/IP stack
Internet Control Message Protocol (ICMP)
User Datagram Protocol (UDP)

CSCI 6250 - Module 2 Flashcards | StudBud

CSCI 6250 - Module 2

86 termsStudBud Administration

CSCI 6250 - Module 2

Flashcards86 cardsFPractice quizPHost liveL

Questions 86

Answers

1
Email clients use this port to retrieve email messages from a mail server over a TCP/IP connection
Port 80 (Hypertext Transfer Protocol)
Port 69 (Trivial File Transfer Protocol)
Port 143 (IMAP)
Port 443 (Secure Hypertext Transfer Protocol)
2
The ISN is set at which step of the TCP three-way handshake?
1
1 and 2
1,2,3
1,3
3
Many network engineers use the service to transfer router and backup router configurations
Port 443 (Secure Hypertext Transfer Protocol)
Port 69 (Trivial File Transfer Protocol)
Port 80 (Hypertext Transfer Protocol)
Port 143 (IMAP)
4
uses this port to retrieve email
Port 139 (NetBIOS)
Port 119 (Network News Transfer Protocol)
Port 143 (Internet Message Access Protocol 4)
Port 135 (Remote Procedure Call)
5
where data is encapsulated into segments
Network layer
Application layer
Transport layer
Internet layer
6
Which of the following is not a valid octal number? Octal #s use digits 0-7
3482
5555
7770
4567
7
How many hosts can a CIDR /24 network have?
354
300
254
450
8
Which command verifies the existence of a node on a network?
ping
netstat
nbtstat
ipconfig
9
Enables users to insecurely log on to a remote server and issue commands interactively
Secure Shell (SSH) - 22
Simple Mail Transfer Protocol (SMTP) - 25
Telnet - 23
Internet Relay Chat (IRC) - 6667
10
Enables users to securely log on to a remote server and issue commands interactively
Secure Shell (SSH) - 22
Simple Mail Transfer Protocol (SMTP) - 25
Internet Relay Chat (IRC) - 6667
Telnet - 23
11
responsible for routing packets by using IP addresses
Network layer
Application layer
Internet layer
Transport layer
12
high-order nibble values: 1100
240
192
128
224
13
like port 80, is used when you connect to a web server; reserved for secure connections
Port 443 (Secure Hypertext Transfer Protocol)
Port 69 (Trivial File Transfer Protocol)
Port 80 (Hypertext Transfer Protocol)
Port 143 (IMAP)
14
The most widely used protocol is
network session hijacking
Internet Assigned Numbers Authority (IANA)
protocol
Transmission Control Protocol/Internet Protocol (TCP/IP)
15
used to connect to a news server for use with newsgroups
Port 110 (Post Office Protocol 3)
Port 135 (Remote Procedure Call)
Port 993 (IMAPS)
Port 119 (Network News Transfer Protocol)
16
enhanced email retrieving protocol; one of the most common email retrieval systems.
Port 110 (Post Office Protocol 3)
Port 135 (Remote Procedure Call)
Port 119 (Network News Transfer Protocol)
Port 993 (IMAPS)
17
Represents the physical network pathway and the network interface card
Application layer
Internet layer
Network layer
Transport layer
18
Application-layer protocols are the front end to the lower-layer protocols in TCP/IP stack; what you can see and touch
False
True
19
1–126 1 126 3 16,777,214
Class B
Class C
network address & host address
Class A
20
IPv4 allows for roughly 4.3 billion unique IP addresses.
True
False
21
Gets data packets to and from the App layer by using port numbers; verifies packet delivery using acknowledgments
Application layer
Transport layer
Internet layer
Network layer
22
developed in 1993 and helped prolong the life of IPv4 by allowing for more efficient IP-assignment space
Class C
network address & host address
Class A
CIDR
23
used by the Microsoft NetBIOS Session Service to share resources
Port 119 (Network News Transfer Protocol)
Port 135 (Remote Procedure Call)
Port 139 (NetBIOS)
Port 143 (Internet Message Access Protocol 4)
24
Given an IP address of 192.168.1.17 and a subnet mask of 255.255.255.192, what is host part?
0.0.0.17
192.168.1.0
25
connection-oriented protocol; sender doesn’t send any data to destination node until the destination node acknowledges
FTP
SMTP
UDP
TCP
26
was the stnd for moving & copying large files; still used today, but less because of the popularity of HTTP
Port 53 (Domain Name System)
Ports 20 and 21 (File Transfer Protocol)
Port 22 (Secure Shell)
Port 25 (Simple Mail Transfer Protocol)
27
Allows different operating systems (OSs) to transfer files between one another
Simple Mail Transfer Protocol (SMTP) - 25
File Transfer Protocol (FTP) - 20 & 21
Hypertext Transfer Protocol Secure (HTTPS) - 443
Simple Network Management Protocol (SNMP) -161
28
Email servers listen on this port
Port 22 (Secure Shell)
Port 53 (Domain Name System)
Ports 20 and 21 (File Transfer Protocol)
Port 25 (Simple Mail Transfer Protocol)
29
List the six flags of a TCP packet.
ACK and PSH
SYN and URG
FIN
RST
30
What’s the hexadecimal equivalent of the binary number 1111 1111 ?
EE
DD
255
FF
31
Controls the flow of data, sequencing packets for reassembly, and encapsulating the segment w/TCP or UDP
Transport layer
Application layer
Internet layer
Network layer
32
TCP is a connection-less-oriented protocol
True
False
33
What class is the IP address 172.16.0.1?
Class A
Class C
Class B
Class D
34
IP version 4 (IPv4), still the most widely used version, was developed without security functions in mind.
False
True
35
used when you connect to a web server. HTTP is not secure, so most web servers use HTTPS (port 443)
Port 443 (Secure Hypertext Transfer Protocol)
Port 69 (Trivial File Transfer Protocol)
Port 143 (IMAP)
Port 80 (Hypertext Transfer Protocol)
36
uses encryption & authentication to create a secure chan over unsecure ntwk; secure logons, file trnfr, port forward
Port 53 (Domain Name System)
Port 22 (Secure Shell)
Ports 20 and 21 (File Transfer Protocol)
Port 25 (Simple Mail Transfer Protocol)
37
The main protocol for transmitting email messages across the Internet
Hypertext Transfer Protocol Secure (HTTPS) - 443
File Transfer Protocol (FTP) - 20 & 21
Simple Mail Transfer Protocol (SMTP) - 25
Simple Network Management Protocol (SNMP) -161
38
Primarily used to monitor devices on a network, such as monitoring a router’s state remotely
Simple Mail Transfer Protocol (SMTP) - 25
Simple Network Management Protocol (SNMP) -161
Hypertext Transfer Protocol Secure (HTTPS) - 443
File Transfer Protocol (FTP) - 20 & 21
39
The long-term solution is IPv5 addressing.
False
True
40
When companies assign IP addresses, they must give unique IP address to each network segment that’s separated by router
False
True
41
high-order nibble values: 1000
240
192
224
128
42
logical, not physical, component of a TCP connection and can be assigned to a process that requires network connectivity
port
appliance
IANA
bypass
43
A ping command initially uses which ICMP type code?
Type 14
Type 13
Type 8
Type 0
44
the three components of the TCP/IP three-way handshake.
SYN-ACK
SYN
ACK
FIN
45
The primary protocol used to communicate over the web
File Transfer Protocol (FTP) - 20 & 21
Simple Network Management Protocol (SNMP) -161
Hypertext Transfer Protocol Secure (HTTPS) - 443
Simple Mail Transfer Protocol (SMTP) - 25
46
SYN -> SYN-ACK -> ACK = three-way handshake
False
True
47
An IPv4 address consists of 4 bytes divided into two components:
Class A
network address & host address
Class C
Class B
48
physically moving bits across a medium (whether the medium is copper wire, fiber-optic cables, or wireless)
Internet layer
Transport layer
Application layer
Network layer
49
This layer includes network services and client software.
Application layer
Network layer
Transport layer
Internet layer
50
The netstat command indicates that POP3 is in use on a remote server. Which port is the remote server most likely using?
Port 25
Port 143
Port 80
Port 110
51
Given an IP address of 192.168.1.17 and a subnet mask of 255.255.255.192, what is subnet part?
192.168.1.0
0.0.0.17
52
Where applications and protocols, such as HTTPS and SSH, operate
Transport layer
Internet layer
Application layer
Network layer
53
What protocol is used for reporting or informational purposes?
TCP
IGMP
ICMP
IP
54
high-order nibble values: 1111
128
192
224
240
55
responsible for routing a packet to a destination address.
Internet Control Message Protocol (ICMP)
connectionless
User Datagram Protocol (UDP)
Internet layer of the TCP/IP stack
56
used to send messages related to network operations.
connectionless
Internet Control Message Protocol (ICMP)
User Datagram Protocol (UDP)
Internet layer of the TCP/IP stack
57
an attack that relies on guessing the ISNs of TCP packets
network session hijacking
Internet Assigned Numbers Authority (IANA)
protocol
Transmission Control Protocol/Internet Protocol (TCP/IP)
58
users can connect to websites with URLs instead of IP addresses; When a user enters a URL, the DNS server -> IP address
Port 25 (Simple Mail Transfer Protocol)
Ports 20 and 21 (File Transfer Protocol)
Port 53 (Domain Name System)
Port 22 (Secure Shell)
59
To see the list of well-known ports, visit the _ at www.iana.org
Transmission Control Protocol/Internet Protocol (TCP/IP)
network session hijacking
Internet Assigned Numbers Authority (IANA)
protocol
60
Most of the tools both cyber attackers and security testers use run over _
SSH
TCP
IP
ICMP
61
What port, other than port 110, is used to retrieve email?
80
135
25
143
62
used by Microsoft, critical ops of Microsoft Exchange Server & Active Directory; available in Windows 2000 Srvr & later
Port 119 (Network News Transfer Protocol)
Port 110 (Post Office Protocol 3)
Port 993 (IMAPS)
Port 135 (Remote Procedure Call)
63
What port does DNS use?
25
69
80
53
64
A TCP packet has two 16-bit fields containing
TCP flags
source and destination port numbers
network hijacking session
initial sequence number
65
Enables multiple users to communicate over the Internet in discussion forums
Telnet - 23
Simple Mail Transfer Protocol (SMTP) - 25
Secure Shell (SSH) - 22
Internet Relay Chat (IRC) - 6667
66
Some computer attacks use physical hardware, such as a keylogger.
False
True
67
FTP uses port _ for control
20
21
68
TCP communication can be likened to which of the following?
Bullhorn at a sporting event
Announcement over a loudspeaker
Phone conversation
Driving on a highway
69
32-bit number; tracks packets recv'd by node & allows reassemb large packets that were broken up into smaller packets
network hijacking session
TCP flags
source and destination port numbers
initial sequence number
70
uses IP addresses to route packets to the correct destination network.
Network layer
Internet layer
Transport layer
Application layer
71
What numbering system is used to express IPv6 addresses?
octal
decimal
hexadecmial
binary
72
128–191 2 16,128 2 65,534
Class B
Class C
Class A
network address & host address
73
FTP uses port _ for data transfer
21
20
74
On a Windows computer, what command can you enter to show all open ports being used?
netstat
ifconfig
ipconfig
nbtstat
75
192–223 3 2,097,152 1 254
Class B
Class C
network address & host address
Class A
76
Which protocol offers guaranteed delivery and is connection oriented?
TCP
IP
UDP
TFTP
77
FTP requires entering a logon name and password and is more secure than Trivial File Transfer Protocol (TFTP)
True
False
78
TCP header includes:
initial sequence number
source and destination port numbers
TCP flags
network hijacking session
79
Steps 1 and 2 of the three-way handshake send an ISN.
False
True
80
high-order nibble values: 1110
192
224
240
128
81
fast but unreliable delivery protocol that operates on the Transport layer
User Datagram Protocol (UDP)
connectionless
Internet Control Message Protocol (ICMP)
Internet layer of the TCP/IP stack
82
For computers to communicate online or across an office, they must use the same language, known as a _.
network session hijacking
Transmission Control Protocol/Internet Protocol (TCP/IP)
Internet Assigned Numbers Authority (IANA)
protocol
83
IMAP over SSL/TLS; port 993; secured and preferred over the unsecured version IMAP-143
Port 135 (Remote Procedure Call)
Port 993 (IMAPS)
Port 119 (Network News Transfer Protocol)
Port 110 (Post Office Protocol 3)
84
Which of the following protocols is connectionless?
TCP
SPX
IP
UDP
85
occupies 1 bit of the TCP segment and can be set to 0 (off) or 1 (on).
network hijacking session
initial sequence number
TCP flags
source and destination port numbers
86
UDP is
connectionless
Internet layer of the TCP/IP stack
Internet Control Message Protocol (ICMP)
User Datagram Protocol (UDP)