PPSC Computer Science lecturer past papers with answers

PPSC FPSC KPPSC BPSC SPSC Lecturer Computer Science Test 42

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There will be 25 multiple choice question in the test.
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Test Instructions:-
Test Name	Lecturer Computer Science
Subject	Computer Science Test 42
Test Type	MCQs
Total Questions	25
Total Time	20 Minutes
Total Marks	100

You have 20 minutes to pass to the quiz.

Lecturer Computer Science Online Test No. 42

1 / 25

In tunnel mode IPsec protects the

Entire IP packet

IP header

IP payload

None of these

2 / 25

Which of the following statements is NOT true concerning VPNs?

Financially rewarding compared to leased lines

Allows remote workers to access corporate data

Allows LAN-to-LAN connectivity over public networks

Is the backbone of the Internet

3 / 25

IP assigned for a client by DHCP server is

for a limited period

for unlimited period

not time dependent

none of these

4 / 25

L2F was developed by which company?

Microsoft

Cisco

Blizzard Entertainment

IETF

5 / 25

When were VPNs introduced into the commercial world?

Early 80‘s

Late 80‘s

Early 90‘s

Late 90‘s

6 / 25

The DHCP server can provide the _______ of the IP addresses.

dynamic allocation

automatic allocation

static allocation

all of these

7 / 25

DHCP client and servers on the same subnet communicate via

UDP broadcast

UDP unicast

TCP broadcast

TCP unicast

8 / 25

What is DHCP snooping?

techniques applied to ensure the security of an existing DHCP infrastructure

encryption of the DHCP server requests

algorithm for DHCP

none of these

9 / 25

Extensible authentication protocol is authentication framework frequently used in

Wired personal area network

Wireless networks

Wired local area network

None of these

10 / 25

A _________ is an extension of an enterprise‘s private intranet across a public Network such as the Internet across a public Network such as the Internet, creating a secure private connection.

VNP

VPN

VSN

VSPN

11 / 25

VPNs are financially speaking............

Always more expensive than leased lines

Always cheaper than leased lines

Usually cheaper than leased lines

Usually more expensive than leased lines

12 / 25

Traffic in a VPN is NOT.............

Invisible from public networks

Logically separated from other traffic

Accessible from unauthorized public networks

Restricted to a single protocol in IPsec

13 / 25

An attempt to make a computer resource unavailable to its intended users is called

Denial-of-service attack

Virus attack

Worms attack

Botnet process

14 / 25

Which layer 3 protocols can be transmitted over a L2TP VPN?

IPX

Neither A or B

Both A and B

15 / 25

DHCP uses UDP port _______ for sending data to the server.

16 / 25

ESP (Encapsulating Security Protocol) is defined in which of the following standards?

IPsec

PPTP

PPP

L2TP

17 / 25

Pretty good privacy (PGP) is used in

Browser security

Email security

FTP security

None of these

18 / 25

WPA2 is used for security in

Ethernet

Bluetooth

Wi-Fi

None of these

19 / 25

Which component is included in IP security?

Authentication Header (AH)

Encapsulating Security Payload (ESP)

Internet key Exchange (IKE)

All of the above

20 / 25

IPsec is designed to provide the security at the

Transport layer

Network layer

Application layer

Session layer

21 / 25

After obtaining the IP address, to prevent the IP conflict the client may use

internet relay chat

broader gateway protocol

address resolution protocol

none of these

22 / 25

When a DNS server accepts and uses incorrect information from a host that has no authority giving that information, then it is called

DNS lookup

DNS hijacking

DNS spoofing

None of these

23 / 25

A ..................is an extension of an enterprise‘s private intranet across a public Network such as the Internet across a public Network such as the Internet, creating a secure private connection.

VNP

VPN

VSN

VSPN

24 / 25

What protocol is NOT used in the operation of a VPN?

PPTP

IPsec

YMUM

L2TP

25 / 25

If DHCP snooping is configured on a LAN switch, then clients having specific ______ can access the network.

MAC address

IP address

Both (a) and (b)

None of these

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