IT 640 -- Final Exam Questions Answered Correctly Latest Update 2025-2026
certification authority - Answers__________ binds public key to particular entity
confidentiality, integrity, and authenication - AnswersWhat are the three things SSL provided?
SSL - Answers______ provides application programming interface (API) to applications
handshake - Answers__________ Alice and Bob use their certificates, private keys to authenticate
each other and exchange shared secret
key derivation - Answers__________ Alice and Bob use shared secret to derive set of keys
data transfer - Answers__________ data to be transferred is broken up into series of records
connection closure - Answers__________ special messages to securely close connection
DES, 3DES, RC2, RC4 - AnswersWhat are the four common SSL symmetric ciphers?
server authentication, agree on crypto algorithms, establish keys, and client authentication -
AnswersWhat are the four purposes for a SSL handshake?
data integrity, origin authentication, replay attack prevention, and confidentiality - AnswersWhat
are four IPsec Servics?
Authentication Header Protocol - Answers_________ provides source authentication & data
integrity but not confidentiality
Encapsulation Security Protocol - Answers_________ provides source authentication, data
integrity, and confidentiality
security association database - Answersendpoint holds SA state in ________________, where it
can locate them during processing.
security association - Answersbefore sending data, _____________ established from sending to
receiving entity
extensible authentication protocol - Answers_______________ end-end client (mobile) to
authentication server protocol
stateless packet filters, stateful packet filters, and application gateways - AnswersWhats are
three types of firewalls?
Stateless packet filtering - Answers_____________ internal network connected to Internet via
router firewall.
Access Control Lists - Answers_____________ table of rules, applied top to bottom to incoming
packets: (action, condition) pairs
, stateful packet filter - Answers___________ track status of every TCP connection
application gateways - Answers___________ filters packets on application data as well as on
IP/TCP/UDP fields.
Node - AnswersWhat is a host and routers?
Links - AnswersCommunication channels that connect adjacent nodes along communication
path is called?
Wired link, Wireless Link, and LAN's - AnswersWhat are the three types of Links?
data-link layer - Answers___________ has responsibility of transferring data gram from one node
to physically adjacent node over a link.
Framing Link Access - Answers___________ encapsulate datagram into frame, adding header,
trailer and channel access if shared medium and a MAC addresses used in frame headers to
identify source/dest.
Framing, Reliabe Delivery, Flow Control, Error Detection, Error Correction, and Half Duplex and
Full Duplex - AnswersWhat are the seven link layer services?
In each and every host and a NIC or on a chip. - AnswersWhere is the link layer implemented?
Encapsulates datagram and adds error checking bits - AnswersHow do the adaptors
communicate?
No - AnswersIs Error detection 100% reliable?
Single Bit Parity - Answers__________ detect single bit errors
Two-Dimensional Bit Parity - Answers_________ detect and correct single bit errors
Cycle Redundancy Check - Answers___________ more powerful error-detection coding
Point to Point and Broadcast - AnswersWhat are the two types of link?
Multiple Access Protocol - Answers_____________ distributed algorithm that determines how
nodes share channel and determine when node can transmit and communication about channel
sharing must use channel itself.
Single Shared broadcast channel and two or more simultaneous transmissions - AnswersWhat
are the two types of Multiple Access Controls?
Collision - Answers__________ if node receives two or more signals at the same time
Channel Partitioning, Random Access and Taking Turns - AnswersWhat are the three broad
classes of MAC protocols?
certification authority - Answers__________ binds public key to particular entity
confidentiality, integrity, and authenication - AnswersWhat are the three things SSL provided?
SSL - Answers______ provides application programming interface (API) to applications
handshake - Answers__________ Alice and Bob use their certificates, private keys to authenticate
each other and exchange shared secret
key derivation - Answers__________ Alice and Bob use shared secret to derive set of keys
data transfer - Answers__________ data to be transferred is broken up into series of records
connection closure - Answers__________ special messages to securely close connection
DES, 3DES, RC2, RC4 - AnswersWhat are the four common SSL symmetric ciphers?
server authentication, agree on crypto algorithms, establish keys, and client authentication -
AnswersWhat are the four purposes for a SSL handshake?
data integrity, origin authentication, replay attack prevention, and confidentiality - AnswersWhat
are four IPsec Servics?
Authentication Header Protocol - Answers_________ provides source authentication & data
integrity but not confidentiality
Encapsulation Security Protocol - Answers_________ provides source authentication, data
integrity, and confidentiality
security association database - Answersendpoint holds SA state in ________________, where it
can locate them during processing.
security association - Answersbefore sending data, _____________ established from sending to
receiving entity
extensible authentication protocol - Answers_______________ end-end client (mobile) to
authentication server protocol
stateless packet filters, stateful packet filters, and application gateways - AnswersWhats are
three types of firewalls?
Stateless packet filtering - Answers_____________ internal network connected to Internet via
router firewall.
Access Control Lists - Answers_____________ table of rules, applied top to bottom to incoming
packets: (action, condition) pairs
, stateful packet filter - Answers___________ track status of every TCP connection
application gateways - Answers___________ filters packets on application data as well as on
IP/TCP/UDP fields.
Node - AnswersWhat is a host and routers?
Links - AnswersCommunication channels that connect adjacent nodes along communication
path is called?
Wired link, Wireless Link, and LAN's - AnswersWhat are the three types of Links?
data-link layer - Answers___________ has responsibility of transferring data gram from one node
to physically adjacent node over a link.
Framing Link Access - Answers___________ encapsulate datagram into frame, adding header,
trailer and channel access if shared medium and a MAC addresses used in frame headers to
identify source/dest.
Framing, Reliabe Delivery, Flow Control, Error Detection, Error Correction, and Half Duplex and
Full Duplex - AnswersWhat are the seven link layer services?
In each and every host and a NIC or on a chip. - AnswersWhere is the link layer implemented?
Encapsulates datagram and adds error checking bits - AnswersHow do the adaptors
communicate?
No - AnswersIs Error detection 100% reliable?
Single Bit Parity - Answers__________ detect single bit errors
Two-Dimensional Bit Parity - Answers_________ detect and correct single bit errors
Cycle Redundancy Check - Answers___________ more powerful error-detection coding
Point to Point and Broadcast - AnswersWhat are the two types of link?
Multiple Access Protocol - Answers_____________ distributed algorithm that determines how
nodes share channel and determine when node can transmit and communication about channel
sharing must use channel itself.
Single Shared broadcast channel and two or more simultaneous transmissions - AnswersWhat
are the two types of Multiple Access Controls?
Collision - Answers__________ if node receives two or more signals at the same time
Channel Partitioning, Random Access and Taking Turns - AnswersWhat are the three broad
classes of MAC protocols?
