question stringclasses 17
values | choices sequence | answer class label 4
classes |
|---|---|---|
Assume that a TLS connection has been established successfully between a client and a server. Establishing the session included checking the server certificate and executing a DiffieHelmann exchange, but the client did not provide a client certificate. Further, assume that the client and server are honest, that the cli... | [
"True, True",
"False, False",
"True, False",
"False, True"
] | 0A |
MIT’s Kerberos KDC server has a maximum ticket lifetime of 24 hours (for most user principals). What ensures that an expired Kerberos ticket can no longer be used? | [
"The Kerberos server (KDC) refuses to establish new connections between clients and servers for expired tickets.",
"When a client connects to a server, the server sets a 24-hour timer to terminate the connection, which ensures a client cannot remain connected past the ticket’s maximum lifetime.",
"When a client... | 2C |
Consider the paper Native Client: A Sandbox for Portable, Untrusted x86 Native Code by Yee et al. Ben Bitdiddle notes that NaCl uses Intel x86 segmentation to ensure that the sandboxed module does not read or write memory outside its own data area, and does not execute instructions outside its own code. Ben thinks that... | [
"all instructions that modify segment state",
"all loads or stores to addresses that are not 0 mod 32",
"all indirect loads or stores (via an address in a register or variable)",
"all indirect jumps (via an address in a register or variable)"
] | 0A |
Man in the middle attack can endanger the security of Diffie Hellman method if two parties are not | [
"Joined",
"Authenticated",
"Submitted",
"Shared"
] | 1B |
The AH Protocol provides source authentication and data integrity, but not | [
"Integrity",
"Privacy",
"Nonrepudiation",
"Both A & C"
] | 1B |
Which of the following is not a security exploit? | [
"Eavesdropping",
"Cross-site scripting",
"Authentication",
"SQL Injection"
] | 2C |
Which of the following is not a transport layer vulnerability? | [
"Mishandling of undefined, poorly defined variables",
"The Vulnerability that allows “fingerprinting” & other enumeration of host information",
"Overloading of transport-layer mechanisms",
"Unauthorized network access"
] | 3D |
Suppose Unix did not provide a way of passing file descriptors between processes, but still allowed inheriting file descriptors from a parent on fork and exec. What aspects of the OKWS design would break without file descriptor passing?
1. It would be impossible for services to get a TCP connection to the client web br... | [
"True, True",
"False, False",
"True, False",
"False, True"
] | 2C |
Assume that a TLS connection has been established successfully between a client and a server. Establishing the session included checking the server certificate and executing a DiffieHelmann exchange, but the client did not provide a client certificate. Further, assume that the client and server are honest, that the cli... | [
"True, True",
"False, False",
"True, False",
"False, True"
] | 0A |
Which of the following is not a block cipher operating mode? | [
"ECB",
"CFB",
"CBF",
"CBC"
] | 2C |
Buffer-overflow may remain as a bug in apps if __________ are not done fully. | [
"boundary hacks",
"memory checks",
"boundary checks",
"buffer checks"
] | 2C |
Encryption and decryption provide secrecy, or condentiality, but not | [
"Authentication",
"Integrity",
"Privacy",
"All of the above"
] | 1B |
A sender must not be able to deny sending a message that was sent, is known as | [
"Message Nonrepudiation",
"Message Integrity",
"Message Condentiality",
"Message Sending"
] | 0A |
Which Nmap scan is does not completely open a TCP connection? | [
"SYN stealth scan",
"TCP connect",
"XMAS tree scan",
"ACK scan"
] | 0A |
Why is it that the compiler does not know the absolute address of a local variable? | [
"Programs are not allowed to reference memory using absolute addresses",
"The size of the address depends on the architecture the program will run on",
"As a stack-allocated variable, it could have different addresses depending on when its containing function is called",
"Compiler writers are not very good at... | 2C |
Which of the following is not an example of presentation layer issues? | [
"Poor handling of unexpected input can lead to the execution of arbitrary instructions",
"Unintentional or ill-directed use of superficially supplied input",
"Cryptographic flaws in the system may get exploited to evade privacy",
"Weak or non-existent authentication mechanisms"
] | 3D |
Suppose Unix did not provide a way of passing file descriptors between processes, but still allowed inheriting file descriptors from a parent on fork and exec. What aspects of the OKWS design would break without file descriptor passing?
1. It would be impossible for services to send messages to oklogd.
2. It would be i... | [
"True, True",
"False, False",
"True, False",
"False, True"
] | 1B |
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