- How many GB do you need on a phone?
- What is the difference between NFC and RFID?
- What secure protocol is recommended for voice and video?
- What is the message integrity check MIC within WPA used for?
- Why is Bluetooth called so?
- How far does WIFI reach?
- What type of radio frequency transmissions are used by Bluetooth devices?
- Why is a rogue AP a security vulnerability?
- What secure protocol is recommended for time synchronization?
- What are the security issues with Bluetooth?
- Which encryption protocol is used in the wpa2 standard?
- Which of these is the most secure protocol for transferring files?
- Can Bluetooth go through walls?
- What is the most common type of external storage media for smartphones?
- At what level of the OSI model does the IP protocol function?
- What type of storage is used on mobile devices?
- Do mobile phones use flash memory?
- What technology is predominately used for contactless payment systems?
- Which SQL injection statement can be used to erase an entire database table?
- What is the maximum range of most Bluetooth devices?
- Which is Piconets in which connections exist between different Piconets?
How many GB do you need on a phone?
If you’re an average phone user and you fall in the middle of the above scenarios, 64 GB or 128 GB should be plenty of storage for you.
If you don’t mind storing your photos and videos in the cloud, you can probably make do with 32 GB..
What is the difference between NFC and RFID?
NFC stands for Near-Field Communication. NFC is also based on the RFID protocols. The main difference to RFID is that a NFC device can act not only as a reader, but also as a tag (card emulation mode). … NFC systems operate on the same frequency as HF RFID (13.56 MHz) systems.
What secure protocol is recommended for voice and video?
Security – Chapter 7TCP/IP uses its own four-layer architecture that includes the Network Interface, Internet, Transport, and Application layers.TrueWhat secure protocol is recommended for time synchronization?C. NTPWhat secure protocol is recommended for voice and video?A. SRTP37 more rows
What is the message integrity check MIC within WPA used for?
What is the Message Integrity Check (MIC) within WPA used for? Prevent active and passive man-in-the-middle attacks.
Why is Bluetooth called so?
As it turns out, Bluetooth is named after a 10th-century Scandinavian king. Harald “Blatand” Gormsson was a Viking king who ruled Denmark and Norway from the year 958 until 985. … It was so prominent that his nickname was Blatand, which literally translates from Danish to “Bluetooth”.
How far does WIFI reach?
Wi-Fi networks have a range that’s limited by the frequency, transmission power, antenna type, the location they’re used in, and the environment. A typical wireless router in an indoor point-to-multipoint arrangement using 802.11n and a stock antenna might have a range of 50 metres (160 ft) or less.
What type of radio frequency transmissions are used by Bluetooth devices?
Bluetooth uses the ISM 2.4 GHz band frequency and uses Gaussian frequency shift keying for communication. The communication distance is around 100 m or less. Bluetooth technology allows wireless communication between electronic devices.
Why is a rogue AP a security vulnerability?
Why is a rogue AP a security vulnerability? It allows an attacker to bypass many of the network security configurations. Which of these is NOT a risk when a home wireless router is not securely configured? Which of these WI-Fi setup (WPS) methods is vulnerable?
What secure protocol is recommended for time synchronization?
The Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. In operation since before 1985, NTP is one of the oldest Internet protocols in current use.
What are the security issues with Bluetooth?
Bluetooth encryption is supposed to stop criminals listening in to your data or phone calls. In other words, eavesdropping shouldn’t be a problem. However, older Bluetooth devices that use outdated versions of the Bluetooth protocol will likely face the threat of unpatched security holes.
Which encryption protocol is used in the wpa2 standard?
Advanced Encryption Standard (AES)The protocol used by WPA2, based on the Advanced Encryption Standard (AES) cipher along with strong message authenticity and integrity checking is significantly stronger in protection for both privacy and integrity than the RC4-based TKIP that is used by WPA.
Which of these is the most secure protocol for transferring files?
File Transfer ProtocolOnly File Transfer Protocol (FTP) and File Transfer Protocol SSL (FTPS) are used for transferring files, and of the two FTPS is the only secure, encrypted protocol.
Can Bluetooth go through walls?
Bluetooth is most commonly known as a protocol for hands off phone control. … Bluetooth devices typically have a range of about 30 feet, do not require line of site to send a signal, and can even go through walls. Bluetooth has the disadvantage of being less secure than other wireless communications.
What is the most common type of external storage media for smartphones?
Common portable and fixed external storage devices include HDDs, a type of magnetic storage, and SSDs, which use flash technology with capacities starting in the gigabyte range to 10 terabytes (TB) and higher.
At what level of the OSI model does the IP protocol function?
The best known example of the Transport Layer is the Transmission Control Protocol (TCP), which is built on top of the Internet Protocol (IP), commonly known as TCP/IP. TCP and UDP port numbers work at Layer 4, while IP addresses work at Layer 3, the Network Layer.
What type of storage is used on mobile devices?
Internal memory is the manufacturer-installed storage space, usually 16, 32 or 64GB, where the operating system, pre-installed apps, and other system software is installed.
Do mobile phones use flash memory?
All the major tablets that have been announced or shipped this year use flash chips in place of a spinning hard disk drive (HDD) for storage. All smartphones also use NAND flash, as do many netbooks. … But what happens to flash storage affects a growing proportion of the digital tools used for work and play.
What technology is predominately used for contactless payment systems?
NFC is based on wireless technology while RFID is not.
Which SQL injection statement can be used to erase an entire database table?
SQL DROP TABLE statementThe SQL DROP TABLE statement is used to remove a table definition and all the data, indexes, triggers, constraints and permission specifications for that table.
What is the maximum range of most Bluetooth devices?
Class 1 devices transmit at 100 mW with a range of 100 meters or 328 feet. Class 2 devices transmit at 2.5 mW with a range of 10 meters or 33 feet. Most Bluetooth headsets and headphones are common Class 2 devices. Lastly, Class 3 devices transmit at 1 mW with a range of fewer than 10 meters.
Which is Piconets in which connections exist between different Piconets?
A group of piconets in which connections exist between different piconets. One device is the master, and controls all of the wireless traffic. The other device is known as a slave, which takes commands from the master.