Assignment 3
Subject Code: COS2626
Unique Assignment Number: 752700 (Semester 1) and 742425 (Semester 2)
QUESTION 1
1.1. The Physical layer, is the simplest layer of all and is responsible only for sending bits via a wired or
wireless
transmission.
1.2. The Network layer moves messages from one node to another until they reach the destination host.
1.3. Protocols such as HTTP, SMTP, POP3, IMAP4, FTP, Telnet, and RDP are used at the Application layer
Question 2
2.1. well-known ports
registered ports
dynamic and private ports
2.2. Request for Telnet connection on port 23
Question 3
3.1. The utility ping (Packet Internet Groper) is used to verify that TCP/IP is installed, bound to the NIC,
configured correctly and communicating with the network.
3.2. On UNIX and Linux systems, use the ifconfig utility to view and manage TCP/IP settings.
3.3. The nslookup (name space lookup) utility allows you to query the DNS database from any computer
on
the network and find the host name of a device by specifying its IP address, or vice versa.
Question 4
4.1. TRUE
4.2. FALSE. Edge routers, or border routers, connect an autonomous system with an outside network,
also
called an untrusted network.
4.3. TRUE
QUESTION 5
5.1. STP and UTP use RJ-45 (registered jack 45) modular connectors and data jacks, which look like
analog telephone connectors and jacks.
5.2. FALSE. crosstalk—Occurs when a signal traveling on one wire or cable infringes on the signal
traveling
over an adjacent wire or cable.
5.3. FALSE. Zipcord fiber-optic patch cable
QUESTION 6
6.1. h
6.2. g
6.3. f6.4. e
6.5. d
6.6. c
6.7. b
6.8. a
Subject Code: COS2626
Unique Assignment Number: 752700 (Semester 1) and 742425 (Semester 2)
QUESTION 1
1.1. The Physical layer, is the simplest layer of all and is responsible only for sending bits via a wired or
wireless
transmission.
1.2. The Network layer moves messages from one node to another until they reach the destination host.
1.3. Protocols such as HTTP, SMTP, POP3, IMAP4, FTP, Telnet, and RDP are used at the Application layer
Question 2
2.1. well-known ports
registered ports
dynamic and private ports
2.2. Request for Telnet connection on port 23
Question 3
3.1. The utility ping (Packet Internet Groper) is used to verify that TCP/IP is installed, bound to the NIC,
configured correctly and communicating with the network.
3.2. On UNIX and Linux systems, use the ifconfig utility to view and manage TCP/IP settings.
3.3. The nslookup (name space lookup) utility allows you to query the DNS database from any computer
on
the network and find the host name of a device by specifying its IP address, or vice versa.
Question 4
4.1. TRUE
4.2. FALSE. Edge routers, or border routers, connect an autonomous system with an outside network,
also
called an untrusted network.
4.3. TRUE
QUESTION 5
5.1. STP and UTP use RJ-45 (registered jack 45) modular connectors and data jacks, which look like
analog telephone connectors and jacks.
5.2. FALSE. crosstalk—Occurs when a signal traveling on one wire or cable infringes on the signal
traveling
over an adjacent wire or cable.
5.3. FALSE. Zipcord fiber-optic patch cable
QUESTION 6
6.1. h
6.2. g
6.3. f6.4. e
6.5. d
6.6. c
6.7. b
6.8. a
