1101 Cont. Cont. Flashcards
The display technology most commonly used in modern laptops
LCD
Which of the following are Flash Drives?
- USB Drive
- Hard Disk Drive
- Thumb Drive
- Solid State Drive
- Optical Drive
USB Drive and Thumb Drive
Which of the following use Flash Memory?
- USB Drive
- Hard Disk Drive
- Solid State Drive
- Magnetic Disk Drive
- Optical Drive
USB Drive and Solid State Drive
What were the two primary cellular, but incompatible, 2G and 3G transmission systems before LTE?
CDMA and GSM
(Code Division Multiple Access) and (Global System for Mobile Communications)
What is a security feature used in the Bluetooth device pairing process?
PIN Codes
SSH
A security protocol for logging into a remote server.
Secure SHell
SSH provides an encrypted session for transferring files and executing server programs on all platforms. Also serving as a secure client/server connection for applications such as database access and email, SSH supports a variety of authentication methods.
SNMP
A widely used network monitoring and control protocol.
Simple Network Management Protocol
Data are passed from SNMP agents, which are hardware and/or software processes reporting activity in each network device (hub, router, bridge, etc.) to the workstation console used to oversee the network. The agents return information contained in a MIB (Management Information Base), which is a data structure that defines what is obtainable from the device and what can be controlled (turned off, on, etc.). Originating in the Unix community, SNMP has become widely used on all major platforms.
LDAP
A protocol used to access a directory listing in a TCP/IP network.
Lightweight Directory Access Protocol
LDAP is used to query network directories, email servers and other information repositories. It is a sibling protocol to HTTP and FTP and uses the ldap:// prefix in its URL.
CIFS
The file sharing protocol used in Windows.
Common Internet File System
It evolved out of the SMB (Server Message Block) protocol in DOS, which is why the terms CIFS/SMB and SMB/CIFS are commonly used. The word “Internet” in CIFS does not refer to the global Internet but to generic internetworking.
The two most popular programming interfaces (API) from the IETF that enable a user’s email program to access the mail server.
Email clients such as Outlook, Mail, Eudora and Thunderbird are typically configured to retrieve mail via one or the other.
POP3 and IMAP4
Post Office Protocol 3 and Internet Message Access Protocol 4
POP3 or IMAP4?
(ANSWER) is a simple system with limited selectivity. Incoming messages and attachments are downloaded when users check their mail, and (ANSWER) is typically configured to delete the messages on the server after downloading. If the user opts to not delete them, the messages will download again the next time mail is checked.
POP3
POP3 or IMAP4?
(ANSWER) has more options than (THE OTHER ONE). For example, it can download only the message headers, which have only to/from addresses and subject. An essential option in the early days of dial-up, the user then chooses which messages and attachments to download. (ANSWER) also keeps the messages on the mail server in synchronization with the downloaded messages in the client. Users can then decide when and which messages to delete on the server.
IMAP4
An IEEE standard for powering network devices via Ethernet cable. Also known as “Power-over-Ethernet” (PoE), the (BLANK) specification provides 48 volts over 4-wire or 8-wire twisted pair.
802.3af
An IEEE standard for High Power over Ethernet (PoE+). The (BLANK) specification provides 25.5 watts of power compared to the 15.4 watts of (BLANK).
802.3at
An IEEE standard for a higher Power over Ethernet (PoE) rating, also known as PoE++, UPoE, or 4PPoE.
802.3bt
PoE = 802.3af
PoE+ = 802.3at
PoE++ = 802.3bt
A device that connects two LAN segments together. They are inserted into the network to keep traffic contained within the segments to improve performance.
Bridge
Equipment from the telephone company that terminates its optical fibers at the customer’s premises. Using electricity from the customer’s AC source, it converts the incoming optical signals into electrical signals for telephone, TV and Internet.
ONT
Optical Network Terminal
This occurs when a switch’s physical interface repeatedly goes up and down within a short period of time.
Port Flapping
The use of multiple transmitters and receivers (multiple antennas) on wireless devices for improved performance.
MIMO
Multiple Input/Multiple Output
When two transmitters and two or more receivers are used, two simultaneous data streams can be sent, which double the data rate. Multiple receivers alone allow greater distances between devices. For example, the IEEE 802.11n (Wi-Fi) wireless standard uses MIMO to increase speed to 100 Mbps and beyond, doubling at minimum the 802.11a and 11g rates. MIMO antennas are also used in WiMAX and LTE.
MU-MIMO
Multiuser-MIMO (Multiple Input/Multiple Output)
A multi-transmitter/receiver technology (MIMO) that supports multiple wireless users simultaneously. Contrast with SU-MIMO (Single User-MIMO).
Unlicensed wireless frequency bands are radio waves that can be used without filing with the Federal Communications Commission (FCC). The FCC has designated several frequency bands for unlicensed use, including…
900 MHz, 2.4 GHz, and 5.8 GHz
An authentication method that enables signing an outbound email message with digital signature
DKIM
DomainKeys Identified Mail
The commands and functions used to print a job on a network printer.
Printing Protocol
It manages the submission of print jobs by maintaining queues and controlling the transfer of their contents to the printer. It also enables the user to determine the capabilities of the printer and the status of the job and be able to cancel it.
Which of these are examples of Printing Protocols?
1. LPR/LPD ==== 2. ONT 3. WISP ======= 4. PostScript 5. PAP ======== 6. CDFS 7. QMS ======== 8. SNMP 9. LDAP ======= 10. NDPS 11. MIMO ====== 12. JetDirect 13. PRL ======= 14. PCL 15. IPP ======= 16. MU-MIMO
LPR/LPD, PAP, QMS, NDPS, JetDirect and IPP
1, 5, 7, 10, 12, 15