At which layer do SSL VPNs work in the OSI model?
At the Application Layer 0.0%
At the Presentation Layer 0.0%
At the Session Layer 0.0%
At the Transport Layer 100.0%
At the Network Layer 0.0%
By which of the following can Man-in-the-middle attack be prevented?
IKE 0.0%
Digital Signatures 100.0%
Cryptography 0.0%
Anti-virus 0.0%
Due to which of the following reasons do you need to revoke a certificate?
The private key used for authentication has been compromised 25.0%
The identity certificate has been compromised 25.0%
The certificate is no longer used 25.0%
The certificate has expired 25.0%
How can you overcome the limitation of IPSec to support broadcast and multicast?
Through Multicast Encryption 0.0%
Through Broadcast Encryption 0.0%
It cannot support them 100.0%
Through GRE Encapsulation 0.0%
How does anti-replay mechanism work in IPSec Technology?
By Encryption 0.0%
By Hashing 0.0%
By Tracking Sequence Numbers 100.0%
By Authenitcation 0.0%
How does IPSec handle the confidentiality of a message?
Through encryption 100.0%
Through authentication 0.0%
Through hashing 0.0%
Through sequence numbers 0.0%
How many key combinations are possible if the length of the key is 56 bits?
255 0%
2128 0%
2256 0%
2512 0%
How many keys are required if two parties communicate using Symmetric Cryptography?
One 100.0%
Two 0.0%
Three 0.0%
Four 0.0%
How many modes are there in IKE Phase 1?
1 0.0%
2 100.0%
3 0.0%
4 0.0%
5 0.0%
How many phases are there in IKE (Internet Key Exchange)?
1 0.0%
2 100.0%
3 0.0%
4 0.0%
5 0.0%
How many tunnels are supported by PPTP?
1 0.0%
2 100.0%
3 0.0%
4 0.0%
5 0.0%
The ability of a SSL VPN to receive user requests and relay them to internal server is_________.
Relaying 0.0%
Reverse Relaying 0.0%
Reverse Proxying 100.0%
Forwarding 0.0%
The act of learning information about the target network is called?
DoS attack 0.0%
Encryption 0.0%
Repudiation 0.0%
Network reconnaissance 100.0%
To which of the following attacks is Diffie-Hellman algorithm vulnerable?
Brute Force attack 0.0%
Dictionary attacks 0.0%
Spoofing attack 0.0%
Man-in-the-middle attack 100.0%
To which of the following attacks is IPSec vulnerable to?
Spoofing 100.0%
DoS attack 0.0%
Brute Force attack 0.0%
Key Management attack 0.0%
VPDN is a/an
Application Layer VPN 0.0%
Session Layer VPN 0.0%
Transport Layer VPN 0.0%
Network Layer VPN 100.0%
What is CRL?
Certificate Return List 0.0%
Certificate Revised List 0.0%
Certificate Revocation List 100.0%
Certificate Registration List 0.0%
What is MPLS network?
Multi Protocol Layer Switching 0.0%
Multi Protocol Label Switching 100.0%
Multi Protocol Link Switching 0.0%
Multi Protocol Label System 0.0%
Multi Protocol Layer System 0.0%
What is VPDN?:
Virtual Private Dial-up Network 100.0%
Virtual Private Digital Network 0.0%
Virtual Personal Dial-up Network 0.0%
Virtual Personal Digital Network 0.0%
Which of the following are advantages of an SSL VPN?
No additional software is required at the client's side 33.0%
Secure application access is possible from anywhere 33.0%
A large number of Web browsers are supported 33.0%
Several methods of authentication are supported 0.0%
Which of the following are advantages of DES and 3DES?
They use symmetric keys 50.0%
They use asymmetric keys 0.0%
They make encryption faster 50.0%
They make encryption slow 0.0%
Which of the following are advantages of MPLS VPN?
It supports various topologies 50.0%
It is scalable and flexible 50.0%
It offers encryption 0.0%
It is easy to implement and configure 0.0%
Which of the following are categories of QoS?
Hybrid QoS 0.0%
Integrated services 33.0%
Best effort QoS 33.0%
Differentiated services 33.0%
Which of the following are components of L2TP Transactions?
Network Access Server 0.0%
L2TP access concentrator 50.0%
L2TP Network Client 0.0%
L2TP Network Server 50.0%
Which of the following are feartures of the IPSec Technology?
Confidentiality 50.0%
Availability 0.0%
Integrity 50.0%
Anti-replay 0.0%
Which of the following are functions of the keys?
Repudiation 0.0%
Encryption 50.0%
Integrity 50.0%
Authentication 0.0%
Which of the following are IPSec modes?
Hybrid Mode 0.0%
Virtual Mode 0.0%
Tunnel Mode 50.0%
Transport Mode 50.0%
Which of the following are PPTP vulnerabilities?
Cleartext passwords 0.0%
Key Management 50.0%
GRE Encapsulation 0.0%
Encryption 50.0%
Which of the following are the authentication methods used in IPSec?
Hashing algorithm 0.0%
Pre-shared keys 50.0%
Digital Certificates 50.0%
Digital Signatures 0.0%
Which of the following are the best practices for VPN security?
Running virus scans on VPN servers and clients 50.0%
Reviewing the logs 0.0%
Disabling the account of the employee who leaves the organisation 50.0%
Scanning the VPN server for vulnerablities 0.0%
Using IDS 0.0%
Which of the following are the best practices to choose a VPN service provider?
It should offer strong encryption mechanism 50.0%
It should support for Layer 2 & Layer 3 tunneling protocols 50.0%
It should offer system level security 0.0%
It should have strong network backbone 0.0%
Which of the following are the components of a general MPLS VPN structure?
Customer Edge Router 0.0%
Provider Edge Router 50.0%
Service Provider 0.0%
Customer 50.0%
Provider Router 0.0%
Which of the following are the components of the VPN?
Authentication 33.0%
Encapsulation Method 0.0%
Data Encryption 33.0%
Packet Integrity 33.0%
Key Management 0.0%
Which of the following are the features of an MPLS VPN?
It is connection-less 0.0%
It is encrypting 0.0%
It is non-encrypting 50.0%
It is scalable 50.0%
Which of the following are the IPSec security protocols?
Encapsulating Security Payload 50.0%
Encapsulating Security Protocol 0.0%
Authentication Header 50.0%
Authorization Header 0.0%
Which of the following are the Layer 3 VPNs?
MPLS 50.0%
PPTP 50.0%
ATM 0.0%
IPSec 0.0%
Which of the following are the most common VPN problems?
Inablity to connect VPN server 0.0%
Inablity to connect hosts beyond VPN server 50.0%
Inablity to browse the LAN after log in 50.0%
Internet Connectivity 0.0%
Which of the following are the most important issues in key management?
Key Generation 50.0%
Key Encryption 0.0%
Key Distribution 50.0%
Key Backup 0.0%
Which of the following are the security concerns while using PPTP?
Session Hijacking 50.0%
Data Manipulation 0.0%
No Header Information Protection 0.0%
Weak Encryption 50.0%
Which of the following are the types of VPN?
GRE 25.0%
L2TP 25.0%
PPTP 25.0%
IPSec 0.0%
MPLS 25.0%
Which of the following are types of VPN attacks?
DoS attack 0.0%
Attack against VPN protocols 0.0%
Cryptanalysis attacks 50.0%
Security threats to VPN elements 50.0%
Which of the following are widely used account databases?
Primary Domain Controller 50.0%
RADIUS server 50.0%
TACACS server 0.0%
LDAP 0.0%
Novell Directory Service 0.0%
Which of the following attacks is resembled by the following statement: "Inserting the packets of same sequence number into the data stream between a source and destination computer"?
DNS poisioning 0.0%
Landc attack 0.0%
Smurf attack 0.0%
Replay attack 100.0%
Which of the following authorities issues Digital Certificates?
Digital Certificate Authority 0.0%
Certificate Authority 100.0%
Central Certificate Authority 0.0%
Central Certificate Team 0.0%
Which of the following can be threats in an MPLS VPN?
Intrusions from the internet 0.0%
Intrusions from an attached VPN 50.0%
DoS attack 0.0%
Internal threats 50.0%
Which of the following features should be evaluated in a VPN solution?
Connectivity 0.0%
Protection 50.0%
Authentication 50.0%
Application Compatibility 0.0%
Management 0.0%
Which of the following is a characteristic of MPLS VPN?
It can be connection-less 0.0%
It can be connection -oriented 0.0%
It can be connection -less or connection oriented 0.0%
It can be both connection -less and connection-oriented 100.0%
Which of the following is a Hashing algorithm?
Diffie-Hellman 0.0%
3-DES 0.0%
DES 0.0%
MD5 100.0%
Which of the following is an Asymmetric algorithm?
MD5 0.0%
El Gamal 100.0%
IDEA 0.0%
SHA-1 0.0%
Which of the following is stored by MPLS in the routing table?
IP address 0.0%
ARP 0.0%
Labels 100.0%
MAC address 0.0%
Which of the following key lengths are supported by AES?
128 33.0%
192 33.0%
256 33.0%
512 0.0%
1024 0.0%
Which of the following measures are taken by IPSec VPN to combat man-in-the-middle attack?
Device authentication 50.0%
Using a firewall 0.0%
Integrity checking 0.0%
Encryption 50.0%
Which of the following measures should be taken to make a DoS resistant network
Correct Device Positioning 0.0%
Correct Bandwidth Planning 50.0%
Service Overprovisioning 0.0%
Anti-DoS solutions 50.0%
Which of the following port is used by L2F?
UDP 1702 0.0%
UDP 1701 100.0%
TCP 1702 0.0%
TCP 1701 0.0%
Which of the following ports is used by SSL?
80 0.0%
443 100.0%
550 0.0%
4500 0.0%
Which of the following protocols are supported by PPTP?
TCP/IP 0.0%
AppleTalk 0.0%
IPX 50.0%
NetBEUI 50.0%
Which of the following protocols are supported by VPDN?
PPTP 0.0%
PTPP 0.0%
L2TP 50.0%
L2F 50.0%
LF2 0.0%
Which of the following protocols can be encapsulated with GRE?
AppleTalk 0.0%
IP 50.0%
IPX 50.0%
DECnet 0.0%
Which of the following protocols can use authentication protocols such as RADIUS and TACACS+?
PPTP 0.0%
L2TP 50.0%
L2F 50.0%
LT2P 0.0%
Which of the following protocols is used by PPTP to tunnel packets?
L2TP 0.0%
L2F 0.0%
PPP 100.0%
PTPP 0.0%
Which of the following protocols is used for key management?
IKE 100.0%
L2TP 0.0%
PPTP 0.0%
IPSec 0.0%
Which of the following protocols supports IKE?
L2TP 0.0%
PPTP 0.0%
PTPP 0.0%
IPSec 100.0%
Which of the following services should be disabled on an MPLS VPN router?
Finger 0.0%
TCP keepalives 0.0%
NTP 0.0%
Password encryption service 0.0%
CDP 100.0%
Which of the following sources can be used for testing interoperability between VPN vendors?
VPNC 50.0%
IPSec-WIT 50.0%
CERT 0.0%
ICSA Labs 0.0%
Which of the following statements are true of IPSec?
It can encrypt/decrypt IP traffic only 33.0%
It can be used for authentication 33.0%
It can be used for Layer 2 VPN protocol 0.0%
It does not support multicast or broadcast 33.0%
It supports only multicast 0.0%
Which of the following statements is true of the Transport mode in IPSec?
IPSec header is inserted between IP and Lower layer header 0.0%
IPSec header is inserted between IP and Upper layer header 100.0%
There is no IPSec header 0.0%
Only Authentication header is inserted 0.0%
Only Encapsulating Security Payload is inserted 0.0%
Which of the following symmetric algorithms has variable key length?
MD5 0.0%
Triple DES 0.0%
DES 0.0%
Rivest Cipher 4 100.0%
Which of the following tasks can be performed by GRE?
Encryption 0.0%
Authentication 0.0%
Integrity Check 0.0%
Encapsulation 100.0%
Which of the following topologies are possible in an IPSec VPN?
Hub and Spoke Topology 50.0%
Bus Topology 0.0%
Full Mesh Topology 50.0%
Ring Topology 0.0%
Which of the following VPN protocols is resistant to Denial-of-Service attack?
PPTP 0%
L2TP 0%
IPSec 0%
L2F 0%
Which of the following VPN protocols support multiple tunnels?
PPTP 0%
L2TP 0%
IPSec 0%
NTP 0%
Which of the following ways can be used to generate SSL certificates?
Self-generated 50.0%
Central SSL Certificate Authority 0.0%
SSL Authority 0.0%
Certificate Authority 50.0%
Which port is used by IKE(Internet Key Exchange) ?
TCP 550 0.0%
TCP 500 0.0%
UDP 550 0.0%
UDP 500 100.0%
Which port is used by L2TP?
1701 100.0%
1702 0.0%
550 0.0%
4500 0.0%
Which port is used by PPTP?
500 0.0%
550 0.0%
1723 100.0%
Which port is used for NAT-Traversal?
TCP 4500 0.0%
TCP 4600 0.0%
UDP 4500 100.0%
UDP 4600 0.0%
Which protocol is used by L2TP?
TCP 0.0%
UDP 100.0%
RPC 0.0%
FTP 0.0%
Which protocol is used by PPTP?
TCP 100.0%
UDP 0.0%
RPC 0.0%
FTP 0.0%