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The Password Authentication Protocol (PAP) operates using which type of handshake?
a. Three-way handshake
b. Four-way handshake
c. Two-way handshake
d. One-way handshake
Answer: c. Two-way handshakegeeksforgeeks+1
PAP is primarily used in conjunction with which protocol?
a. IPsec
b. PPP (Point-to-Point Protocol)
c. DNS
d. HTTP
Answer: b. PPP (Point-to-Point Protocol)wikipedia+1
What does PAP send over the network to authenticate a user?
a. Encrypted tokens
b. Plaintext username and password
c. Hash values
d. Digital certificates
Answer: b. Plaintext username and passwordokta+1
PAP transmits credentials that are vulnerable to which type of attack?
a. SQL injection
b. Packet sniffing
c. Cross-site scripting
d. CSRF
Answer: b. Packet sniffinggeeksforgeeks+1
PAP is defined in which RFC?
a. RFC 1918
b. RFC 2246
c. RFC 1334
d. RFC 4301
Answer: c. RFC 1334wikipedia
Which step occurs first during PAP authentication?
a. Server sends challenge
b. Client sends username and password
c. Server sends ACK response
d. Client receives authorization
Answer: b. Client sends username and passwordokta
In PPP, PAP is considered a:
a. Strong authentication method
b. Weak authentication method
c. Hybrid method
d. Token-based system
Answer: b. Weak authentication methodokta+1
Which response does the PAP server send if authentication fails?
a. Authentication-ack
b. Authentication-nak
c. Authentication-confirm
d. Authentication-refuse
Answer: b. Authentication-nakokta
PAP can be configured as a backup to which stronger authentication protocol?
a. SSL
b. CHAP
c. TLS
d. EAP
Answer: b. CHAPgeeksforgeeks
PAP is best suited for which type of network environment?
a. Highly secure enterprise
b. Physically secure or legacy system
c. Cloud-native environment
d. Zero-trust architecture
Answer: b. Physically secure or legacy systemwikipedia+1
In PAP, how are the credentials verified?
a. Against a token service
b. By matching stored credentials on server
c. By hashing the password on client
d. By using digital certificates
Answer: b. By matching stored credentials on servergeeksforgeeks+1
What is one of the main advantages of PAP?
a. Encryption support
b. Implementation simplicity
c. Two-factor enforcement
d. Non-repudiation
Answer: b. Implementation simplicitygeeksforgeeks
PAP uses which mechanism to authenticate users?
a. Challenge-response
b. Simple password verification
c. Certificate validation
d. Token exchange
Answer: b. Simple password verificationgeeksforgeeks
Which security property is absent in PAP?
a. Confidentiality
b. Availability
c. Integrity
d. Authenticity
Answer: a. Confidentialitywikipedia+1
PAP authentication can be carried out over which type of PPP links?
a. Ethernet links only
b. Serial links
c. WAN links only
d. Token ring links
Answer: b. Serial linksgeeksforgeeks
PAP is often replaced by what in modern secure environments?
a. OSPF
b. CHAP
c. HTTPS
d. LDAP
Answer: b. CHAPokta+1
When comparing PAP and CHAP, which one uses encryption?
a. PAP
b. CHAP
c. Both
d. None
Answer: b. CHAPgeeksforgeeks
What happens if a PAP client submits incorrect credentials?
a. Access is granted with warnings
b. Server allows multiple attempts
c. Session is terminated immediately
d. Data is re-encrypted
Answer: c. Session is terminated immediatelyokta+1
PAP lacks protection against which major cybersecurity risk?
a. Replay attacks
b. DoS attacks
c. DDoS attacks
d. Port scanning
Answer: a. Replay attacksgeeksforgeeks
PAP messages are encapsulated within which PPP frame type?
a. Data frame
b. Control frame
c. Authentication frame
d. LCP frame
Answer: c. Authentication framewikipedia
What is PAP’s authentication format?
a. Token-based structure
b. Username and password pair
c. Public-key pairs
d. Kerberos ticket
Answer: b. Username and password pairgeeksforgeeks
Which command enables PAP on Cisco routers?
a. ppp authentication pap
b. auth enable pap
c. enable password pap
d. service pap-auth
Answer: a. ppp authentication papgeeksforgeeks
PAP credentials can be stored in which router configuration component?
a. SNMP community
b. Local database
c. Interface access list
d. DHCP table
Answer: b. Local databasegeeksforgeeks
PAP enables authentication in which legacy connection method?
a. Dial-up networks
b. Mobile LTE
c. Fiber-optic networks
d. MPLS tunnels
Answer: a. Dial-up networksgeeksforgeeks
The main disadvantage of PAP compared to CHAP is that it:
a. Uses more CPU
b. Transmits data in plaintext
c. Requires constant reauthentication
d. Needs digital certificates
Answer: b. Transmits data in plaintextokta+1
PAP is typically implemented in two scenarios:
a. Client-server systems only
b. PPP links and legacy VPN systems
c. Cloud-native platforms
d. Token-based authentication
Answer: b. PPP links and legacy VPN systemsgeeksforgeeks
For two-way PAP authentication, both routers must:
a. Use different passwords
b. Use mutual configuration
c. Disable LCP
d. Share secret keys
Answer: b. Use mutual configurationgeeksforgeeks
PAP allows troubleshooting because:
a. It encrypts logs
b. It sends plaintext data
c. It supports replay
d. It hides handshake
Answer: b. It sends plaintext datageeksforgeeks
PAP’s specification defines authentication exchange using:
a. Asymmetric encryption
b. Simple request/acknowledgment
c. Challenge-handshake
d. Multi-token exchange
Answer: b. Simple request/acknowledgmentokta
PAP authentication is initiated by:
a. Server
b. Client
c. System administrator
d. Network switch
Answer: b. Clientokta+1
The PPP phase during which PAP occurs is:
a. Termination
b. Authentication
c. Configuration
d. LCP negotiation
Answer: b. Authenticationwikipedia+1
PAP’s plain transmission exposes networks to:
a. Trojans
b. Eavesdropping
c. Software bugs
d. Buffer overflow
Answer: b. Eavesdroppinggeeksforgeeks
PAP has low computational requirements because:
a. It uses simple handshakes
b. It encrypts everything
c. It compresses packets
d. It implements hashing
Answer: a. It uses simple handshakesgeeksforgeeks
PAP is considered safe only in:
a. Trusted local or closed environments
b. Cloud-based systems
c. Internet-facing servers
d. Public access networks
Answer: a. Trusted local or closed environmentswikipedia+1
PAP authentication can often be bypassed using:
a. Man-in-the-middle attack
b. SQL injection
c. Command injection
d. Buffer overflow
Answer: a. Man-in-the-middle attackokta
PAP lacks mechanisms for which verification feature?
a. Session encryption
b. Periodic revalidation
c. Bidirectional acknowledgment
d. Hash-based comparison
Answer: d. Hash-based comparisonokta+1
PAP supports how many-directional authentication?
a. Single
b. Dual
c. Triple
d. None
Answer: a. Singlegeeksforgeeks
In a router PAP setup, usernames are:
a. Case-sensitive
b. Case-insensitive
c. Irrelevant
d. Encrypted
Answer: a. Case-sensitivegeeksforgeeks
Which file stores PAP authentication details on UNIX systems?
a. /etc/shadow
b. /etc/ppp/pap-secrets
c. /etc/passwd
d. /etc/net/auth
Answer: b. /etc/ppp/pap-secretsoracle
PAP is inappropriate for which type of environment?
a. Legacy router
b. Dial-up network
c. Enterprise VPN
d. Encrypted tunnels
Answer: d. Encrypted tunnelsgeeksforgeeks
PAP verifies credentials using:
a. Client key pairing
b. Stored server-side database
c. Tokenized challenge
d. Keystore certificate
Answer: b. Stored server-side databasegeeksforgeeks
PAP’s two-way handshake includes which packets?
a. Authentication-request and acknowledgment
b. Request and challenge
c. SYN-ACK packets
d. Data confirmation packets
Answer: a. Authentication-request and acknowledgmentokta
PAP session termination follows what event?
a. Successful authentication
b. Failed login attempt
c. Timeout
d. Credential caching
Answer: b. Failed login attemptokta
PAP’s primary purpose is to:
a. Encrypt communication
b. Authenticate a client to a server
c. Create a VPN tunnel
d. Manage routing tables
Answer: b. Authenticate a client to a serverokta+1
PAP authentication uses commands within which mode on Cisco routers?
a. EXEC mode
b. Interface configuration mode
c. User mode
d. Global mode only
Answer: b. Interface configuration modegeeksforgeeks
PAP transmits passwords in what format?
a. Binary
b. Hexadecimal
c. Plain text
d. SHA hashed
Answer: c. Plain textwikipedia+1
PAP is not ideal for transmitting over:
a. Secure connections
b. Unsecured public networks
c. Isolated LANs
d. Intranets
Answer: b. Unsecured public networkswikipedia+1
PAP ensures which of the following?
a. Authorization
b. Mutual authentication
c. Basic client authentication
d. Encryption
Answer: c. Basic client authenticationokta
PAP operates at which OSI layer?
a. Application
b. Data Link
c. Network
d. Transport
Answer: b. Data Linkwikipedia+1
Why is PAP rarely used today?
a. Requires new hardware
b. Lacks encryption and is insecure
c. Too complex to configure
d. Does not support IPv6
Answer: b. Lacks encryption and is insecurewikipedia+1

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