Module 1

Question 1

Which of the following OSI layers is responsible for addressing?
a) Layer 1
b) Layer 2
c) Layer 3
d) Layer 4
e) Layer 7

Answer 1

Layer 3

Question 2

Which of the following OSI layers is responsible for encryption?
a) Layer 7
b) Layer 6
c) Layer 5
d) Layer 4
e) Layer 3

Answer 2

b) Layer 6

Question 3

The wireless network IEEE 802.11 is defined in which of the following OSI layers?
a) Network
b) Application
c) Presentation
d) Data link
e) Physical

Answer 3

e) Physical

Question 4

Which of the following OSI layer is responsible for handshaking?
a) Layer 4
b) Layer 5
c) Layer 6
d) Layer 7
e) Layer 1

Answer 4

b) Layer 5 (session)

Question 5

Which of the following hardware devices is responsible for holding the time & data information?
a) RAM
b) ROM
c) Hard drive
d) Motherboard
e) CMOS

Answer 5

e) CMOS

Question 6

A touch screen is an example of which of the following category of hardware devices?
a) Input
b) Output
c) I/O
d) Primary storage
e) Secondary storage

Answer 6

c) I/O

Question 7

A hard disk is an example of which of the following category of devices?
a) Input
b) Output
c) I/O
d) Primary storage
e) Secondary storage

Answer 7

e) Secondary storage

Question 8

How many different bus systems does exist in a computer?
a) 2
b) 3
c) 4
d) 6
e) None of the above

Answer 8

c) 4

Question 9

What is the port number of DNS?
a) 21
b) 25
c) 80
d) 110
e) None of the above

Answer 9

e) None of the above

Question 10

ICMP and IGMP protocols belong to which of the following OSI layers?
a) Presentation
b) Session
c) Application
d) Network
e) Transport

Answer 10

d) Network

Question 11

Which of the following protocols is a connection-less protocol?
a) HTTP
b) IP
c) HTTPS
d) UDP
e) TCP

Answer 11

d) UDP

Question 12

Which of the following Ip addresses is referred to a loopback address?
a) 10.1.1.1
b) 172.16.0.1
c) 192.168.0.1
d) 224.0.0.1
e) 127.0.0.1

Answer 12

e) 127.0.0.1

Question 13

Which of the following IP addresses belongs to the multimedia range of addresses?
a) 10.1.1.1
b) 172.16.0.1
c) 192.168.0.1
d) 224.0.0.1
e) 127.0.0.1

Answer 13

d) 224.0.0.1

Question 14

Which of the following IP addresses is an APIPA address?
a) 169.254.1.1
b) 172.16.0.1
c) 192.168.0.1
d) 10.10.10.10
e) 127.0.0.1

Answer 14

a) 169.254.1.1

Question 15

Considering the IP address of 192.168.1.154 and its default subnet mask, which of the following is the host address?
a) 192
b) 154
c) 192.168
d) 192.168.2
e) 192.168.1.154

Answer 15

b) 154

Question 16

What is the port number of SMTP?
a) 110
b) 22
c) 25
d) 124
e) 53

Answer 16

c) 25

Question 17

Which of the following protocols can be used to read or download an email?
a) SMTP
b) POP3
c) FTP
d) IMAP4
e) Both B & D

Answer 17

e) Both B & D

Question 18

Given the IP address of 129.29.139.20 and its default subnet mask, what is the network address?
a) 20
b) 139.20
c) 29.239.20
d) 129.29
e) None of the above

Answer 18

d) 129.29

Question 19

A TCP/IP socket is defined as:
a) IP address
b) Port number
c) UDP
d) TCP
e) Both A & B

Answer 19

e) Both A & B

Question 20

Which of the following servers can be placed in DMZ?
a) Web
b) FTP
c) Email
d) DNS
e) All of the above

Answer 20

e) All of the above

Question 21

Dynamic IP addresses are automatically assigned by a ____ server.
a) DNS
b) VPN
c) NAT
d) DHCP
e) All of the above

Answer 21

d) DHCP

Question 22

Which of the following commands provides information about active TCP & UDP connections?
a) Ipconfig/all
b) Tracert
c) Netstat
d) Ping
e) Pathping

Answer 22

c) Netstat

Question 23

The address 10.43.130:23 is referred to as a(n) ______
a) IPv4
b) IPv6
c) Port
d) Physical node
e) Socket

Answer 23

e) Socket

Question 24

Which of the following commands is used to query a DNS Server?
a) Ipconfig
b) Tracert
c) Nslookup
d) Nbstat
e) Ping

Answer 24

c) Nslookup

Question 25

Which type of DNS record identifies an email server? a) AAAA record b) CNAME record c) MX record d) PTR record e) SRV record

Answer 25

c) MX record

Question 26

Which of the following servers hides internal IP addresses from external network? a) DNS b) NAT c) DHCP d) Mail e) None of the above

Answer 26

b) NAT

Question 27

What is the default lease time of a DHCP server? a) 2 days b) 4 days c) 6 days d) 8 days e) Unlimited

Answer 27

e) Unlimited

Question 28

A device that operates at Layer 3 and up is called a ____ a) Switch b) Router c) Hub d) Gateway e) None of the above

Answer 28

d) Gateway

Question 29

This device operates at data link layer a) Switch b) Hub c) Router d) Gateway e) None of the above

Answer 29

a) Switch

Question 30

This server or device processes the assignment of a TCP port number to each ongoing session between a local host and an Internet host a) DHCP b) Router c) NAT d) Gateway e) PAT

Answer 30

e) PAT

Question 31

IGMP operates at the ______ layer of OSI model to manage multicasting a) Network b) Transport c) Session d) Physical e) Application

Answer 31

a) Network

Question 32

A TCP handshaking is processed in _____ steps a) 2 b) 3 c) 4 d) 5 e) 8

Answer 32

b) 3

Question 33

The amount of data that could be theoretically transmitted during a given period of time is called ______ a) Throughput b) Speed c) Bandwidth d) Baseband e) Broadband

Answer 33

c) Bandwidth

Question 34

A paragraph of a text document contains approximately _____ data a) One MB b) One Mbps c) One KB d) One Giga bits e) Ten bytes

Answer 34

c) One KB

Question 35

An extended ASCII table contains values between _____ and _____ a) 1, 128 b) 0, 127 c) 128, 254 d) 127,256 e) 128, 255

Answer 35

e) 128, 255

Question 36

Which of the following standards is designed for structural cabling for commercial building wiring standard? a) IEEE 802.1 b) IEEE 802.3 c) TIA/EIA 568 standard d) ISO 320000 e) OSI layer 7

Answer 36

c) TIA/EIA 568 standard

Question 37

The cross talk issue is associated with which of the following type of cables? a) Twisted pair cable b) 10Base2 c) Coaxial d) Fiber optic e) None of the above

Answer 37

a) Twisted pair cable

Question 38

Which of the following multiplexing technologies offers a fewer number of fiber optic channels? a) FDM b) STDM c) WDM d) DWDM e) CWDM

Answer 38

e) CWDM

Question 39

What is the maximum cable length supported by the 100BaseTX standard? a) 100 meters b) 185 meters c) 500 meters d) 25 meters e) 5000 meters

Answer 39

a) 100 meters

Question 40

What is the maximum cable length supported by the 10Base5 standard a) 100 meters b) 185 meters c) 500 meters d) 25 meters e) 5000 meters

Answer 40

c) 500 meters

Question 41

What is the maximum speed of Cat3 associated with the Token Ring Topology? a) 100 mbps b) 10 mbps c) 1 mbps d) 3 mbps e) 4 mbps

Answer 41

e) 4 mbps

Question 42

Which of the following cable connectors is/are associated with a Single Mode Fiber (SMF)? a) MT-RJ b) SC c) ST d) LC e) Both B & C

Answer 42

e) Both B & C

Question 43

What is the maximum cable length of a 10Base-ER cable? a) 550 meters b) 5000 meters c) 10,000 meters d) 1500 meters e) None of the above

Answer 43

e) None of the above